welcome and introductions · 2017. 10. 20. · june 28-29, 2017 3 5 agenda –june 29, 2017 8:00am...
TRANSCRIPT
-
June 28-29, 2017
1
Center for Urban Transportation Research | University of South Florida
CUTR Transit Standards Working Group
June 28 – 29, 2017 l Pueblo, CO
2
Welcome and Introductions
• Lisa Stabler – President, TTCI
• Safety Briefing – Ruben Peña, TTCI
• Transit Standards Working Group Facilitator –James Tucci, P.E., WSO-CSSD, TSSP, FCP – K & J Safety and Security Consulting Services, Inc., President & Chief Engineer
-
June 28-29, 2017
2
3
CUTR Working Group Members
• Kurt Wilkinson, TriMet
• Ni Lee, BART
• Scott Sauer, SEPTA
• Ron Nickle, MBTA
• Paul Goyette, Lee Tran
• Rich Czeck, GCRTA
• Larry Baker, KCATA
• Vijay Khawani, LAMetro
• Will Jones, Greeley-Evans Transit
• Susan Hausmann, TxDOT
• Jeff Hiott, APTA
• Brian Alberts, APTA
• Charlie Dickson, CTAA
• Ed Watt, ATU
4
Agenda – June 28, 2017
8:00am Welcome and Introductions
8:40am Latest/Current Regulatory Activity
10:15am Working Group Subcommittee Project Updates
12:00pm Working Lunch
12:45pm Review Focus Areas
1:45pm Breakout 1 – Rank and Weight Focus Areas
3:35pm Breakout 2 – Priority Ranking Methodology
5:00pm Adjourn
6:30pm Working Group Dinner
-
June 28-29, 2017
3
5
Agenda – June 29, 2017
8:00am Discussion from Day 1
8:30am Metallurgy/Rail Defects Presentation
9:30am TTCI Facility Tour
11:30am Working Lunch
12:30pm Groups Present and Discuss Prioritization
2:00pm Discuss Safety Standards Strategic Plan
2:40pm Breakout 3 – Safety Standards Strategic Plan Input
4:40pm Session Review and Wrap Up
6
LATEST/CURRENT REGULATORY ACTIVITY
-
June 28-29, 2017
4
7
FTA General Directives
• Safety Advisory 17-1 – Stop Signal Overruns (WMATA Special Directive 16-5 and ProposedGeneral Directive 17-1)
• Right-of-Way Worker Protection (RWP) – (if published)
8
FTA Safety Directive
• WMATA – April 24, 2017 RWP
– Safety Directive 15-1
– Safety Directive 16-2
• Other Agencies
-
June 28-29, 2017
5
9
FTA Rules Update
• 49 CFR 625 Transit Asset Management (TAM)
– Subpart D Performance Management Requirements
• 49 CFR 630 National Transit Database Asset Inventory
– Reporting Requirements
– TAM Guidebook
10
FTA Rules Update (cont’d)
• 49 CFR 670 Public Transportation Safety Program
– Subpart D – National Public Transportation Safety Plan
• 49 CFR 673 Proposed Public Transportation Agency Safety Plan
• 49 CFR 674 State Safety Oversight
• Status - Preventing Transit Worker Assault
-
June 28-29, 2017
6
11
BREAK
12
WORKING GROUP SUBCOMMITTEE PROJECT UPDATES
-
June 28-29, 2017
7
Transportation Technology Center, Inc., a subsidiary of the Association of American Railroads
© TTCI/AAR. p13
Event Data Recorder for
Transit Rail Vehicles
© TTCI/AAR, 6/21/2017. p14
® EDR Status
♦ Task 1 – Complete
●Industry need
●Literature search
●Gap Analysis
♦ Task 2 - 95% complete
●Data collection
▲Finalizing last data collection forms received
●Modifications to current standards
●Recommendations
▲Revised completion data of June 30, 2017 to add recommendation related to data retention of EDR data after download
-
June 28-29, 2017
8
© TTCI/AAR, 6/21/2017. p15
® NTSB Reports
♦ Safety Recommendation R-10-022 – In June 2009, an inbound
WMATA train struck a stopped inbound train. The accident results
in 9 deaths due to the telescoping of one train car onto another.
The 1000-series Metrorail cars involved in the accident were not
equipped with onboard event recorders and as a result NTSB
investigators had to compile other source of information to
determine speed, braking performance, and position time history of
the colliding train. As a result, the NTSB recommended to WMATA
“Develop and implement a program to monitor the performance of
onboard event recorders and ensure they are functioning
properly.”*
*National Transportation Safety Board. 2010 “Safety Recommendation R-10-022.”
© TTCI/AAR, 6/21/2017. p16
® NTSB Reports
♦ Safety Recommendation R-02-19 – Two rear-end collisions
occurred within 2-month period in 2001 at CTA. The investigation
found deficiencies in CTA management approach to ensuring rules
compliance and also in the data loggers performance related to
preserving time. As a result of the two accidents, the NTSB
recommended to the FTA “Require that new or rehabilitated
vehicles funded by Federal Transit Administration grants be
equipped with event recorders meeting Institute of Electrical and
Electronics Engineers Standard 1482.1 for rail transit vehicle event
recorders.”*
*National Transportation Safety Board. 2002 “Safety Recommendation R-02-019”
-
June 28-29, 2017
9
© TTCI/AAR, 6/21/2017. p17
® NTSB Reports
♦ Multiple NTSB recommendations to the Federal Railroad
Administration (FRA) regarding event recorders with
hardened crashworthiness and fire-protecting
standards, maintenance criteria to confirm event
recorders are working
●National Transportation Safety Board. 1998 “Safety Recommendation R-98-030.”
●National Transportation Safety Board. 1997 “Safety Recommendation R-97-053.”
●National Transportation Safety Board. 1997 “Safety Recommendation R-97-056.”
© TTCI/AAR, 6/21/2017. p18
® Other Transportation Modes
Implementation of EDRs (black boxes)
♦ Aviation industry mandated in 1967
♦ Automobile industry mandated in 2006 EDR installation
for newly manufactured personal automobiles
-
June 28-29, 2017
10
© TTCI/AAR, 6/21/2017. p19
® FTA Report Recommending EDR Use in
Rail Rapid Transit Systems
♦ Basic Event Recorder – Records accident and incident data that
can be used for analysis by transit management and government
investigators. Primarily used for accident/incident investigation.
♦ Enhanced Event Recorders – Records all basic event recorder data,
but also records performance functions that could be used by
maintenance personnel and engineering/management for diagnosis
and monitoring of system performance.
♦ Monitoring and Diagnostic Recorders – Provides all basic and
enhanced event recorder data collection, but allows the data to be
used in real time for the operator and for historical performance
data. This type of EDR may record more data functions and store
data for longer periods of time.
© TTCI/AAR, 6/21/2017. p20
® Industry Stakeholder Discussion
♦ All new rail vehicles being procured should have EDRs
installed
♦ Equipping EDRs on older equipment going through mid-
life rehabilitation or on legacy equipment may be too
costly and/or not feasible.
●Should allow for waiver for existing fleets or legacy equipment to be exempt from EDR requirement
♦ Universal format of data from EDRs would be nice
♦ Consider incident/accident EDRs different than EDRs
collection other data for operation/maintenance related
activities
♦ Data security related to alternative data downloads
-
June 28-29, 2017
11
© TTCI/AAR, 6/21/2017. p21
® Standards and Regulations
♦ Regulations for freight and commuter locomotives
♦ Standards
Country Transportation
Mode
Document Title Applicability Specification
Type
USA Freight/Commuter
Rail
FRA 49 CFR
229.135
Event Recorders Any train operating
>30mph
Data Collection
USA Freight/Commuter
Rail
FRA 49 CFR
Part 229.25
and 229.27
Inspection and
Test for Event
Data Recorders
Any train operating
>30mph
Design
USA Freight/Commuter
Rail
FRA 49 CFR
Appendix D to
Part 229
Criteria for
Certification of
Crashworthy
Event Recorder
Memory Module
Any train operating
>30mph
Design
Country Transportation
Mode
Document Title Applicability Specification
Type
USA Freight Rail AAR MSRP
Standard S-
5512
Event Recorders for
Locomotives
Locomotives Design & Data
Collection
USA All Rail Modes APTA-RT-VIM-
RP-015-03
Recommended Practice
for On-Board Recording
Equipment Periodic
Inspection and
Maintenance
Any rail vehicle
equipped with
EDR
Data Collection
USA All Rail Modes IEEE Standard
1482.1
Standard for Rail Transit
Vehicle Event Recorder
Any locomotive Design & Data
Collection
© TTCI/AAR, 6/21/2017. p22
® Comparison Between IEEE 1482.1 and
CFR Regulation
♦ Similarities
●Data storage – Both define the minimum amount of EDR data to store in memory as 48 hours of data
●Data collected – Both specifications define the signals to be recorded
▲FRA 49 CFR 229.135 criteria is aimed at locos/DMU/ EMUs
▲IEEE 1482.1 standard lists additional signals for transit vehicles. IEEE 1482.1 standard does list a correlation between IEEE specification and 49 CFR 229.135.
●Crashworthiness – IEEE 1482.1 uses the same criteria as Option A listed in 49 CFR 229.135
●Health monitoring of the system – Both specifications define EDR health monitoring by use of self-tests designed into the EDR. Only if self-tests indicate a failure, further testing and maintenance is completed.
-
June 28-29, 2017
12
© TTCI/AAR, 6/21/2017. p23
® Comparison Between IEEE 1482.1 and
CFR Regulation
♦ Differences
●Location
▲FRA 49 CFR 229.135 - Lead loco or in a loco that can record the specific information as it was in the lead locomotive
▲IEEE 1482.1 - one functioning EDR per transit car
●Age of EDR installed and type of locomotive/DMU/EMU –
▲FRA 49CFR 229.135 defines criteria for equipment based on year put into service
●Preservation of data after download –
▲FRA 49 CFR 229.135 lists the minimum time to preserve data after download of data as 1 Year
▲IEEE 1482.1 does not provide any criteria related to data after downloaded
© TTCI/AAR, 6/21/2017. p24
® Comparison Between IEEE 1482.1 and
CFR Regulation
♦ Differences
●Documentation related to working EDRs –
▲FRA 49 CFR 229.135 defines the required documentation to be filled out in relation to working EDRs and EDRs removed from service
▲IEEE 1482.1 does not require any documentation
●Data Collection sampling and filtering rates –
▲FRA 49 CFR does not define sampling or filtering rates
▲IEEE 1482.1 specification does
-
June 28-29, 2017
13
© TTCI/AAR, 6/21/2017. p25
® Gap Analysis
♦ Two specifications target all the categories
●IEEE 1482.1
●AAR MSRP (Actually refers to IEEE 1482.1)Document Title Event Type Targeted Specification Category
Incident Operational/
Maintenance
Minimum Data
Requirements
Data
Collection
Method
Storage Rates Health
Monitoring of
EDR
Crashworthiness Output
49 CFR
229.135
Event Recorders Yes Yes but
would
require
modifications
X X X
FRA 49 CFR
Appendix B Part
229.25 and
229.27
Inspection and Test for
Event Data RecordersYes Yes but
would
require
modifications
X
49 CFR
Appendix D to
Part 229
Criteria for Certification
of Crashworthy Event
Recorder Memory
Module
Yes Yes but
would
require
modifications
X
AAR MSRP
Standard S-
5512 (note
References
IEEE)
Event Recorders for
Locomotives
Yes Yes but
would
require
modifications
X X X X X X
APTA-RT-VIM-
RP-015-03
Recommended Practice
for On-Board Recording
Equipment Periodic
Inspection and
Maintenance
Yes Yes but
would
require
modifications
X
IEEE Standard
1482.1
Standard for Rail Transit
Vehicle Event Recorder
Yes Yes but
would
require
modifications
X X X X X X
© TTCI/AAR, 6/21/2017. p26
® Gap Analysis
♦ Items Not Covered by Existing Specifications
●Universal Output
▲Subcommittee Recommendation to be discussed at end of presentation
●Data security related to alternative download methods
▲Subcommittee Recommendation to be discussed at end of presentation
●Data retention after download of data (IEEE1482.1 specifically)
-
June 28-29, 2017
14
© TTCI/AAR, 6/21/2017. p27
® Discussion on Data Retention after Data
is Downloaded
♦ Data retention AFTER download brought up at end of
May
●As a result, emergency subcommittee meeting was called to discuss
♦ Differences between agencies and states
●State defined
●Data is kept until litigation has passed or statute of litigation has passed
♦ Data retention after download requirements would have
to specify reason for download (incident/accident vs.
operation/maintenance)
●Policy for operational/maintenance likely to be different than incident/accident data
© TTCI/AAR, 6/21/2017. p28
® Specifications Outside of State Policy
♦ FTA Best Practices Procurement Manual (BPPM)
●Record retention for FTA grantees requires grantees to retain project related documents for three years following completion of FT funded project. It any litigation claim, negotiation, audit, or other action is started before the 3 year period, the records must be retained until completion of the action and resolution or until the end of the 3 year period, whichever is later.
♦ DOT Rule 49 CFR Part 40 Section 40.333 – Drug and
alcohol record keeping requires retention 5 years from
incident with positive drug test, alcohol concentration of
0.02 or greater, refusal to take test, and all follow-up test
♦ FRA 49 CFR 229.135 – Preserves EDR data download for
1 year
-
June 28-29, 2017
15
© TTCI/AAR, 6/21/2017. p29
® Discussion continued on Data Retention
after Data Download
♦ Could NTD reportable accidents be used for data
retention policy applicability?
●Definition for serious injury is complicated….
♦ Recommendation discussion
●Agency has a policy for data retention but not defined by FTA but by state or litigation policy??
●Other ideas?
© TTCI/AAR, 6/21/2017. p30
® Modifications to Specifications for
Applicability to Transit Rail Vehicles
Document Title Type of Rail Vehicle
Standard was Written
Modifications Required to Apply Standard to
Transit Vehicles
FRA 49 CFR
229.135
Event Recorders
(Details data to
collect only)
Train travelling >30 mph
with locomotive equipped
with EDR
Data to collect would need to be modified to
include
Multiple Automatic Train Control (ATC)
status
Passenger door status
Pantograph or third rail status
FRA 49 CFR
Appendix B Part
229.25 and
229.27
Inspection and
Test for Event
Data Recorders
Locomotive travelling > 30
mph
Would require modifications language referring
to FRA forms and requirements to report to FRA
if data is requested.
FRA 49 CFR
Appendix D Part
229
Criteria for
Certification of
Crashworthy Event
Recorder Memory
Module
Locomotive travelling >30
mph
No Changes required
AAR Manual of
Standards
(MSRP) Standard
S-5512
Event Recorders
for Locomotives
Locomotive Refers to IEEE 1482.1 specification but changes
would be required to refer to the specification for
transit rail vehicles specific data requirements
and not locomotive only data required.
APTA-RT-VIM-
RP-015-03
Recommended
Practice for On-
Board Recording
Equipment
Periodic Inspection
& Maintenance
Transit Rail Vehicles No Changes required
IEEE Standard
1482.1
Standard for Rail
Transit Vehicle
Event Recorder
Transit Rail Vehicles Retention of data after download
-
June 28-29, 2017
16
© TTCI/AAR, 6/21/2017. p31
® Testing Required for EDRs
♦ Testing defined in specifications
●Crashworthiness of EDR (Fire, Shock, Fluid Immersion, Pressure, and more)
●Health of EDRDocument Title Testing Requirement
FRA 49 CFR
229.135
Event Recorders (Details
data to collect only)
FRA 49 CFR
Appendix B Part
229.25 and
229.27
Inspection and Test for
Event Data Recorders
Criteria for inspection of EDRs based on type of EDR
installed. Lists specific intervals to check.
FRA 49 CFR
Appendix D Part
229
Criteria for Certification of
Crashworthy Event
Recorder Memory Module
Criteria for crashworthiness and what tests need to be
completed.
AAR Manual of
Standards
(MSRP) Standard
S-5512
Event Recorders for
Locomotives
Refers to IEEE 1482.1 requirements
APTA-RT-VIM-
RP-015-03
Recommended Practice for
On-Board Recording
Equipment Periodic
Inspection & Maintenance
Recommends periodic inspection and test time intervals for
health of EDR system.
IEEE Standard
1482.1
Standard for Rail Transit
Vehicle Event Recorder
Criteria for periodic inspection/test and crashworthiness but
does not define how to test. Crashworthiness criteria
defines the types of tests. Leaves the supplier responsible
for showing it meets the criteria.
© TTCI/AAR, 6/21/2017. p32
® Data Collection of EDR Implementation in
Transit Rail Vehicles
♦ Data collection effort (similar effort completed in 2007
used as comparison)
●38 agencies responded in 2017
●37 agencies in 2017
●Missing a few agencies with larger rail fleets (WMATA, Tren Urbano, MTA-MD)
Vehicles Equipped with
EDR, 5013, 40%
Vehicles Not Equipped with
EDR, 7634, 60%
2017 Study 12,591 12647
3,246
5013
0
2,000
4,000
6,000
8,000
10,000
12,000
14,000
2007 Study 2017 Study
Vehicles in Fleet Vehicles Equipped with EDR
-
June 28-29, 2017
17
© TTCI/AAR, 6/21/2017. p33
® EDR Implementation by Mode - 2017
♦ Light rail mode has 67% implementation of EDRs in
vehicles
♦ Heavy rail mode has 34% implementation of EDRs in
vehicles
Equipped with EDR, 3446, 34%
Not Equipped with EDR, 6705, 66%
Heavy Rail Vehicles
Equipped with EDR, 1529, 67%
Not Equipped with EDR, 747, 33%
Light Rail Vehicles
Equipped with EDR, 30, 14%
Not Equipped with EDR, 182, 86%
Street Cars
© TTCI/AAR, 6/21/2017. p34
® EDR Implementation – 2007 vs. 2017
♦ Implementation is increasing
●New vehicles being procured with EDRs
10,15110,747
2,2761,844
212 N/A
3,4462,614
1,529632
300
2,000
4,000
6,000
8,000
10,000
12,000
2017 2007 2017 2007 2017 2007
Heavy Rail Vehicles Light Rail Vehicles Street Cars
Total Vehicles Equipped with EDRs
-
June 28-29, 2017
18
© TTCI/AAR, 6/21/2017. p35
® Draft Final Report Recommendations
♦ Recommendation 1: FTA should consider mandating
the installation of EDRs on all new transit rail vehicles
and EDRs installed should meet or exceed the IEEE
1482.1 criteria.
●Transit vehicles not equipped with EDRs represent over 60% of the rail transit vehicles in service today. Accident investigation becomes more difficult when EDRs are not installed on transit vehicles. Multiple NTSB recommendations have identified the need for all transit vehicles be EDR equipped.
●IEEE 1482.1 is a standard that is an industry accepted standard as many agencies are using the standard in RFPs for new vehicles.
© TTCI/AAR, 6/21/2017. p36
® Draft Final Report Recommendations
♦ Recommendation 2: FTA consider issuing a voluntary
standard for transit rail vehicles going through a mid-life
rehabilitation to implement EDRs meeting or exceeding
IEEE 1482.1 specifications. A voluntary standard for
existing fleets would allow for agencies with legacy
equipment or equipment that would be too costly to
implement EDRs.
●Transit vehicles not equipped with EDRs represent approximately 60% of vehicles in service today. EDR implementation during a mid-life rehabilitation may be impossible on legacy equipment or be too costly for the remainder of the life of the vehicle.
-
June 28-29, 2017
19
© TTCI/AAR, 6/21/2017. p37
® Draft Final Report Recommendations
♦ Recommendation 3: FTA work with IEEE, APTA or other
SDOs to develop a standard for common data download
format (text or csv). This would allow EDR
manufacturers to have their own proprietary programs,
but also allow a review of data without any special
viewing software.
●Discussions with the industry stakeholders identified the need to a common data download format to allow for easy viewing of EDR data. This common download method could be useful for both agencies and for NTSB investigators. Data collection from agencies indicated multiple types of special software is required to view the data based on the type/manufacturer of EDR.
© TTCI/AAR, 6/21/2017. p38
® Draft Final Report Recommendations
♦ Recommendation 4: FTA allow each agency the
flexibility to define local operational/maintenance EDR
data collection.
●EDR data collection for operational/maintenance decisions currently has varied use by agency as some use the data frequency (daily) and some use less regularly (weekly/monthly or as needed).
●Members of the working group representing transit agencies suggest that due to the varied needs of agencies and also the ability of some agencies to review and manage data, operational/maintenance data collection should be defined by agencies.
-
June 28-29, 2017
20
© TTCI/AAR, 6/21/2017. p39
® Draft Final Report Recommendations
♦ Recommendation 5: FTA work with IEEE, APTA or other
SDOs to develop a separate standard for secure transfer
of data from WI-FI enabled EDRs.
●EDR specifications do not list any requirements for security of data related to download via the use of WI-FI.
♦ Recommendation 6???
●Data retention after download
Transportation Technology Center, Inc., a subsidiary of the Association of American Railroads
© TTCI/AAR. p40
Emergency Lighting and
Signage for Rail Transit
Systems –
Standards Development
TTCI
MC Jones
-
June 28-29, 2017
21
© TTCI/AAR, 6/21/2017. p41
® Emergency Lighting and Signage for Rail
Transit Systems
♦ Work Scope
●Task 1 - Background Research
▲Industry need
▲Literature review
●Task 2 – Applicability and Modification of Standards Analysis
▲Review literature found in Task 1 for applicability
▲Identify modifications that are required to implement
▲Identify testing needs (if any)
▲Industry data collection
© TTCI/AAR, 6/21/2017. p42
® Definitions
♦ Emergency lighting – refers to lighting used during an
emergency (when normal lighting fails) inside the railcar
only
♦ Emergency signage – refers to the signs attached to the
car for emergency egress of people
♦ Low location emergency path markings (LLEP)
●Identify location of primary door exits and exit paths within low-location areas (includes lighting and signage requirements)
-
June 28-29, 2017
22
© TTCI/AAR, 6/21/2017. p43
® Industry Need
♦ Several rail accidents over the past 20+ years have
identified standardized emergency lighting and signage
on passenger railcars.
●February, 1996, Silver Springs, Maryland (11 killed, 26 injured)-A collision between an Amtrak passenger train and a Maryland Area Rail Commuter (MARC) passenger train caused the fuel tank of the MARC train to be ruptured and as a result, a fire started. Due to the inability of passengers and emergency personnel to find and open the doors, NTSB recommended “all exterior emergency door release mechanisms on passenger cars be functional before a passenger car is placed in revenue service, that the emergency door release mechanism be placed in a readily accessible position and marked for easy identification in emergencies and derailments, and that these requirements be incorporated into minimum passenger car safety standards.”
© TTCI/AAR, 6/21/2017. p44
® Industry Need Identified by Subcommittee
♦ Internationally recognizable signs
♦ Signs related to emergency exits near third rail
♦ Challenges may exist because signage could differ
greatly between agencies
-
June 28-29, 2017
23
© TTCI/AAR, 6/21/2017. p45
® Emergency Lighting for Rail Transit
Systems
♦ Specifications categorized for type of requirements
●Location
●Illuminance criteria
●Power source
●Procedures for testing to meet illuminance criteria.
●Operating conditions
●Maintenance
© TTCI/AAR, 6/21/2017. p46
® Emergency Lighting for Rail Transit
Systems
♦ Current specifications – Note two APTA specifications (one for
“Rail Transit” and one for “Passenger Rail Vehicles”
Country
(Type of Vehicle)
Document Location Illuminance Power Source Testing
Procedures
Operating
Conditions
Maintenance
US (Commuter) Title 49 CFR 238.115
Emergency Lighting
Yes Yes Yes No Yes No
US (Transit) APTA RT-VIM-S-
020-10 Emergency
Lighting System
Design fro Rail
Transit Vehicles
Yes Yes Yes Yes Yes Yes
US (Freight) AAR Manual of
Standards, Section M
Yes Yes Yes Yes Yes No
EU (Passenger) Requirements for
emergency lighting
on passenger rail
vehicles.
Yes Yes Yes Yes No No
US (Passenger) APTA SS-E-013-99
Standard for
Emergency Lighting
on Passenger
Vehicles
Yes Yes Yes Yes Yes Yes
EU (Passenger) EN 13272:2012 Yes Yes Yes Yes No Yes
Australia (Passenger) T HR RS 12001 ST
Interior and Exterior
Lighting for
Passenger Rolling
Stock
Yes Yes Yes No No No
OSHA regulations
(non-rail industry) Regulations 29CFR
Subpart 1910.37(b)
Yes No No No No No
-
June 28-29, 2017
24
© TTCI/AAR, 6/21/2017. p47
® Comparison of APTA specification and EN
13272: 2012
♦ Differences between documents● Illuminance
▲APTA specifications define illuminance by foot-candles (lux) and Passenger railcar specification has requirements for equipment ordered and placed in service before OR after a date.
▲EN specification defines average illumination (lux)
● Testing
▲APTA Specifications must more rigorous in testing requirements
● Operating Conditions – APTA Specification specify conditions (vibration, shock, equipment orientation)
Country
(Type of
Vehicle)
Document Location Illuminance Power Source Testing
Procedures
Operating
Conditions
Maintenance
US (Transit) APTA RT-VIM-S-
020-10 Emergency
Lighting System
Design for Rail
Transit Vehicles
Yes Yes Yes Yes Yes Yes
US
(Passenger)
APTA SS-E-013-99
Standard for
Emergency Lighting
on Passenger
Vehicles
Yes Yes Yes Yes Yes Yes
EU
(Passenger)EN 13272:2012
Yes Yes Yes Yes No Yes
© TTCI/AAR, 6/21/2017. p48
®
Major Differences between APTA Specifications
for Passenger Cars and for Transit Vehicles
♦ Locations
●Passenger car specification includes toilet area
♦ Illuminance criteria
●Transit car specification does not separate requirements for older equipment
-
June 28-29, 2017
25
© TTCI/AAR, 6/21/2017. p49
® Emergency Lighting Specifications
♦ Three documentsDocument Need Modifications for
Transit
APTA RT-VIM-S-020-10 (Transit)*No
APTA SS-E-013-99 Standard for Emergency
Lighting on Passenger Vehicles (Commuter)
Yes
BS EN 13272:2012 (European)Yes
© TTCI/AAR, 6/21/2017. p50
® Emergency Signage for Rail Transit
Systems
♦ Specifications categorized for type of requirements
●Location of interior signs
●Location of exterior signs
●Sign size and letter size
●Illuminance criteria
●Component material
●Operating conditions
●Inspection and maintenance
-
June 28-29, 2017
26
© TTCI/AAR, 6/21/2017. p51
® Emergency Signage for Rail Transit
Systems
♦ Current specifications
♦ Note: APTA has two specifications. Once is written for
“Passenger cars” and another for “Transit Vehicles”
●Major difference between APTA specifications
▲Passenger car specification has specifications related to cars purchased before April 7, 2008 and put in service before January 1, 2011
Country
(Type of
Vehicle)
Document Location
(Interior/
Exterior)
Sign Size and
Letter Size
Illuminance Component
Material
Operating
Conditions
Maintenance &
Inspection
US
(Passenger)
APTA PR-PS-S-002-98
Standard for Emergency
Signage for Egress/Access
of Passenger Rail
Equipment
Yes/Yes Yes Yes Yes Yes Yes
US (Transit) APTA-RT-VIM-S-021-10
Emergency Signage for
Rail Transit Vehicles
Yes/Yes Yes Yes Yes Yes Yes
US
(Passenger)
Title 49 CFR 238.123
Emergency Roof
Access
Yes Interior only No No No No No
© TTCI/AAR, 6/21/2017. p52
®
♦ Three documents with criteria for all major categories
found in Task 1
Emergency Signage Specifications
Document Need Modifications for Transit
APTA RT-VIM-S-021-10 (Transit)*No
APTA PR-S-S-002-98 Standard for Emergency
Signage for Egress/Access to Passenger Rail
Equipment (Commuter)
Yes
Title 49 CFR 238.123 Emergency Roof AccessYes
ISO 7010Yes
-
June 28-29, 2017
27
© TTCI/AAR, 6/21/2017. p53
® International Organization for
Standardization (ISO) Graphical Symbols
♦ ISO 7010 – more internationally
recognizable emergency signs
●Emergency Exit (E001 and E002)
●Break to obtain access (E08)
●Indication of how to open door (E018 and E019)
●No other specific signs that could be applicable
♦ If new symbols were to be adopted by
ISO, they would have to meet ISO
22727 requirements
●May be very difficult
© TTCI/AAR, 6/21/2017. p54
® Emergency Exits Signage for Exit Near
Third Rail
♦ NO specifications/standard
♦ UMTA Recommended Emergency Preparedness
Guidelines for Rail Transit Systems
●Emergency exit paths should not require passengers to step over the third rail but no signage requirements
♦ Subcommittee recommendation to look at signage
related to roadway workers (underway)
-
June 28-29, 2017
28
© TTCI/AAR, 6/21/2017. p55
® Low Location Emergency Path Markings
♦ APTA PR-PS-S-004-99 allows for electrically powered or
passive LLEP system
♦ APTA RT0VIM-S-022-10 (transit) allows for only passive
(non electrically powered) LLEP system
♦ Each APTA specification refers to the rail mode’s
corresponding emergency signage and lighting specs
and
●ASTM E2073-02 Standard Test Method for Photopic Luminance of Photo luminescent
Country
(Type of Vehicle)
Document
US (Passenger)APTA PR-PS-S-004-99, Rev. 2
Standard for Low-Location Exit Path Marking
US (Transit) APTA-RT-VIM-S-022-10
Low Location Emergency Path Markings for Rail Transit Vehicles
© TTCI/AAR, 6/21/2017. p56
® LLEP Requirements
♦ LLEP Markings
●Location (prescriptive about where and line of site visibility
▲Primary door exit signs
▲Primary door exit marking/delineators
▲Exit path mark
●Material for both signs and markers
●Charging light and illuminance
●Testing requirements
●Reliability
●Operating conditions
●Maintenance and inspection
-
June 28-29, 2017
29
© TTCI/AAR, 6/21/2017. p57
® Gap Analysis Summary
♦ APTA standards available may not cover all of the
industry need
●Internationally recognizable signs
●Emergency exit signage near third rail
♦ Other standards from other industry may be able to be
used but would likely need major modification and
potential rewrite/redesign
© TTCI/AAR, 6/21/2017. p58
® Industry Data Collection Underway
♦ General – fleet size and type of implementation of
emergency lighting and signage
♦ Emergency lighting
●What standards were used for existing fleets (and future fleets)
♦ Emergency signage
●Suspect that agencies are using many different styles of signage (pictures, words, colors, illuminance). Requesting examples be sent.
●What standards were used for existing fleets (and future fleets)
●Has agency looked at more internationally recognizable signs (language vs. pictures)?
●Signage related to emergency exits near third rail
♦ LLEP Marking
●What standards were used?
●Fleet implementation
-
June 28-29, 2017
30
© TTCI/AAR, 6/21/2017. p59
® Discussion
♦ Should standard only be applicable to to newly
procured transit vehicles?
♦ APTA specifications for transit vehicle adequate?
●Emergency lighting
●Emergency signage
▲Does not address internationally recognizable signs
▲Does not address third rail signs
●Low Location emergency path markings
▲Does not address internationally recognizable signs
▲Does not address third rail signs
♦ Vehicles undergoing mid-life refurbishment?
●Allow for waiver for non-implementation on older equipment or legacy equipment?
♦ Other?
Transportation Technology Center, Inc., a subsidiary of the Association of American Railroads
© TTCI/AAR. p60
Crash Energy
Management (CEM) for
Transit Rail VehiclesTTCI
MC Jones
Enrico Sciandra
-
June 28-29, 2017
31
© TTCI/AAR, 6/21/2017. p61
® CEM For Transit Rail Vehicles – Progress
Update
♦ Task 1 (100% complete)
●Industry need
●Available standards
●Gap analysis
♦ Task 2 (80% complete)
●Modifications to standards
●Data collection effort
●Recommendations
♦ Donation of (3) WMATA 4000 car series to FTA Safety
Standards Program
© TTCI/AAR, 6/21/2017. p62
® NTSB Reports
♦ 1996 WMATA – 1 person killed
●“Undertake, with the assistance of qualified engineering support, a comprehensive evaluation of the design specifications of all series of Metrorail cars with respect to resisting carbody telescoping and providing better passenger protection, and make the necessary modifications, such as incorporating underframe bracing or similar features, to improve the crashworthiness for cars in the current and/or future Metrorail car”1
●WMATA found modifications to the 1000-series cars (Rohr-built) were impractical and embarked on procurement of the 5000 and 6000-car series.
1National Transportation Safety Board. 1996 “Safety Recommendation R-96-037”
-
June 28-29, 2017
32
© TTCI/AAR, 6/21/2017. p63
® NTSB Reports
♦ 2004 – WMATA – Woodley Park – 20 people injured
●The NTSB recommended to WMATA to “either accelerate retirement of Rohr-built railcars, or if those railcars are not retired but instead rehabilitated, then the Rohr-built passenger railcars should incorporate a retrofit of crashworthiness collision protection that is comparable to the 6000-series railcars”2
●NTSB recommended to the FTA to “develop minimum crashworthiness standards to prevent the telescoping of transit railcars in collisions and establish a timetable for removing equipment that cannot be modified to meet the new standards.”
2National Transportation Safety Board. 2006 “Safety Recommendation R-06-002”
© TTCI/AAR, 6/21/2017. p64
® NTSB Reports
♦ 2008 – MBTA Green Line – 1 fatality, 7 injured
●Although the two cars involved were equipped with anticlimbdevices, the understructure and end structure failed on both trolley cars, resulting in the loss of more than 10 feet of survivable space on both cars.3
●NTSB recommendations was exactly the same as the recommendation in 2004 for WMATA
3National Transportation Safety Board. 2009 “Collision Between Two Massachusetts Bay
Transportation Authority Green Line Trains Newton, Massachusetts May 28, 2008.” July 14, 2009
-
June 28-29, 2017
33
© TTCI/AAR, 6/21/2017. p65
® NTSB Reports
♦ 2009 – WMATA -8 killed ad 80 injured
●WMATA Metrorail train with 1000-series cars struck a train with 3000-series and 5000-series cars, killing 8 and injuring 80. The collision caused telescoping of the train that was hit.
●The NTSB concluded that the “severity of the passenger injuries and number of fatalities was WMATA’s failure to replace or retrofit the 1000-series railcars after those were shown in a previous accident to exhibit poor crashworthiness.”4
4 “July 27, 2010 Railroad Accident Report – Collision of Two Washington Metropolitan Area Transit Authority Metrorail Trains Near Fort Totten Station Washington, D.C. June 22, 2009.” July 27, 2010.
© TTCI/AAR, 6/21/2017. p66
® National Transit Database (NTD)5
♦ Data does not provide detail to allow for direct correlation to
injuries or fatalities that could be prevented or minimized by
implementation of CEM
●Heavy rail collisions would most typically be with another train (limited interaction with automobiles)
▲Rate of injuries from heavy rail train to train collisions
─ Increased by over 400 percent
1 injury every 100 million vehicle revenue miles in 2011
5.5 injuries every 100 million vehicle revenue miles in 2013
These collisions could have severe consequences in terms of available space for survivability of passengers and operator if telescoping between the cars occurs and also due to injuries related to the interior fittings of the car
●Light rail or streetcar train to automobile collisions accounted for 71 percent of all light rail and streetcar collision injuries in 2013.
5 2013. “Rail Safety Statistics Report.” FTA
-
June 28-29, 2017
34
© TTCI/AAR, 6/21/2017. p67
®Injury Mechanism and Standards to Address
♦ Primary collision● CEM targets reducing accelerations at impact and providing space for
survivability
● Design and structural performance standards to address carbodystructural stiffness (i.e.: compression load)
♦ Secondary collision● CEM increases secondary impact velocity in the first car
● Design and structural performance standards to address interior fixation performance (i.e. seats attachment and seat arrangement)
● Passenger performance targets human survivability criteria (related to secondary impact against interior fittings)
© TTCI/AAR, 6/21/2017. p68
® CEM – Structural Performance
♦ CEM design
●Structure fails in controlled manner and as a result, vehicle behavior is more predictable
●Slows down crash event, reducing peak accelerations
●Creates crumple zone
●Less likely to leave the right-of-way
-
June 28-29, 2017
35
© TTCI/AAR, 6/21/2017. p69
® Standards
♦ Available standards focused on transit rail vehicles
●EN 15227, Railway Applications: Crashworthiness Requirements for Rail Vehicle Bodies
▲Lists criteria based on type of rail vehicle
●ASME RT-1-2009: Safety Standard for Structural Requirements for Light Rail Vehicles
▲Includes Street cars
●ASME RT-2-2014: Safety Standard for Structural Requirements for Heavy Rail Transit Vehicles
●EN 12663, Railway Applications: Structural requirements for Railway Vehicle Bodies
Design for Strength Performance Based
Standard Design-based Structural performance-based Passenger performance-based
RequirementsStatic load the structure
must withstandEnergy absorption
(load versus displacement)Biomechanical limit values
© TTCI/AAR, 6/21/2017. p70
® Standards
♦ Available standards focused on commuter rail (require
some modification)
●49 CFR 238.201 to 230 for TIER I
●49 CFR 238.401 to 429 for TIER II
●APTA-PR-CS-S-034-99 Standard for the Design and Construction of Passenger Railroad Rolling Stock
●EN 15227, Railway Applications: Crashworthiness Requirements for Rail Vehicle Bodies
-
June 28-29, 2017
36
© TTCI/AAR, 6/21/2017. p71
®
Other Transportation Mode Standards to Consider
UN ECE 21 – evaluation of dashboard
stiffness through Head Injury Criteria
FMVSS 201 – evaluation of dashboard
stiffness through Head Injury CriteriaPossible assessment of dashboard stiffness
regarding femur load and knee displacement
Possible assessment through
Passenger Performance CriteriaSP
SP
D
SP
SP-PP
SP
PP
SP
© TTCI/AAR, 6/21/2017. p72
® Crashworthiness Evaluation of Light Rail
Vehicle Interiors-Research Report Found
Injury mechanism Possible improvement
Contact between
head and seat back
(Head, neck )
Head rest and seat back
Contact between
occupants (Head,
neck and femur load)
Seat configuration to be
avoided
Contact with
passenger seated in
aft-facing seats or
with other passenger
in lateral facing seats
(head, neck, femur)
Compartmentalization
(padded barrier or divider
at both ends of the
seating section)
Contact with seat
back (head, neck
and femur). No
incursion into the
cabin considered
(can increase
injuries)
Seat configuration to be
avoided
Compartmentalization is a design that aim to confine
the passenger during the crash, thus preventing the
passenger impact against other passenger or stiff
structure.
-
June 28-29, 2017
37
© TTCI/AAR, 6/21/2017. p73
® APTA-PR-CS-S-016-99 applicability to
heavy rail, light rail and streetcars
● Sled test for forward and rear facing seat configuration
▲Forward to investigate seat performance and injuries derived from secondary collision with the forward seat
▲Rear facing to evaluate neck and head injury criteria
● For applicability to heavy rail, light rail and streetcars:
▲Analyze seats layout to be tested
▲Revise crash pulse (depending on vehicle maximum velocity)
▲ Injury criteria directly applicable (depending on passenger percentile)
© TTCI/AAR, 6/21/2017. p74
® Gap Analysis
♦ Industry need is standard(s) to address
●Structural integrity related to primary collision
▲Reduced and controlled collision
▲Survival space
●Passenger performance related to secondary collision
▲Strength and crashworthiness of interior fittings (handhold, seat attachments, and more)
▲Seat arrangement
♦ Standards identified
●Structural integrity – ASME Standards written for transit rail vehicles
●Passenger performance – Standards identified could be enhanced and/or requires modifications for transit rail vehicles
▲Head injury criteria is only used
▲Seat arrangement standard only for commuter
-
June 28-29, 2017
38
© TTCI/AAR, 6/21/2017. p75
® Data Collection
♦ Industry data collection effort underway
●Identify implementation or planned implementation of CEM in transit vehicle fleets
●Specifications used in implementation
●Retrofit plans (if any)
●Assessment of effectiveness (modeling/testing/combination of both)
●Seat layout
© TTCI/AAR, 6/21/2017. p76
® CEM Strategies
♦ WMATA 1000 to 6000 series
● Fully interoperable
● Built to same technological template
● Emphasis on technical commonality
♦ WMATA 7000 series
● Adopt new technologies, drop full interoperability
▲Replaceable absorption elements in anti-climber
▲Non replaceable main absorption elements between anti-climber and carbody bolster
♦ WMATA 8000 series
● According to ASME standard
♦ Honolulu
● According to mixed standard (ASME & EN 15227)
♦ MTBA
● CEM modular and replaceable
▲ Interoperability with old vehicle
▲Possible upgrading when old vehicle will be replaced
▲Possible different components according to maximum speed
-
June 28-29, 2017
39
© TTCI/AAR, 6/21/2017. p77
® Conclusion
♦ The accident report and NTSB recommendations point out the
necessity of Crash Energy Management equipment
● CEM will address the structural integrity and survivability space but does not specifically address secondary impacts that can cause fatalities and injuries.
♦ To decrease injuries due to the secondary impact based on
research reports found could be obtained by compartmentalization,
but seat design and layout are important.
● No standards available in transit rail industry to use for compartmentalization, seat design and layout.
♦ Crashworthiness of interior fittings and evaluation of seat
performance could be investigated by means of other non-railway
standards, testing at component level and measuring the
passenger injury criteria.
© TTCI/AAR, 6/21/2017. p78
® WMATA 4000 Car Series Donation to
Project
♦ FTA has acquired 3 WMATA 4000 car series cars for
Standards Development Project
♦ Could be used in CEM, EDR, Emergency Lighting and
Signage work or potential others.
-
June 28-29, 2017
40
© TTCI/AAR, 6/21/2017. p79
® Internal layout
© TTCI/AAR, 6/21/2017. p80
® Internal layout – seat installation
-
June 28-29, 2017
41
© TTCI/AAR, 6/21/2017. p81
® Internal layout – operator’s space
© TTCI/AAR, 6/21/2017. p82
® Internal layout – wheelchair
-
June 28-29, 2017
42
© TTCI/AAR, 6/21/2017. p83
® Discussion on Recommendations
♦ Should CEM standards be implemented for new purchase of cars?
● Regulatory vs. voluntary?
♦ Should the ASME standards be recommended as the standard for
CEM?
♦ What about cars going through mid-life rehabilitation? Should they
be required to be retro-fitted?
● Investigate if vehicles can be retro-fitted and if it is economical in mid-life rehabilitation?
♦ Should evaluation of compartmentalization, seat design and layout
be completed to identify ways to reduce injury and death related to
secondary impacts?
♦ Should testing be completed to evaluate the ASME standards and
APTA standards related to head injury criteria and potentially other
injury criteria?
© TTCI/AAR, 6/21/2017. p84
® Discussion continued
♦ Should CEM be evaluated for influence on secondary impacts? If
so, use of ATDs could help identify passenger survivability during
those secondary impacts and could be compared to automobile
passenger performance standards.
♦ Should this work account for wheelchair anchorages?
-
June 28-29, 2017
43
85
Crashworthiness/Crash Energy Management (CEM) for Transit Bus
86
Crashworthiness/CEM for Bus Transit Systems – Needs Assessment
• An analysis of the National Transit Database (NTD) Safety and Security 40 (S & S 40) major incidents database indicates
– 411 fatal transit bus involvements occurred between 2011 through 2015
– resulting in 427 fatal injuries
– demand response buses (typically cutaway vehicles) accounted for 32 of the 411 fatal transit bus involvements
• During that same timeframe, there were over
– 21,500 total collision events involving buses
– resulting in more than 40,600 non-fatal injuries
-
June 28-29, 2017
44
87
Crashworthiness/CEM for Bus Transit Systems – Standards that Exist
• Literature review of standards and specifications– Examples of Federal standards include:
• Title 49 CFR 571 sections 201-404 including, but not limited to:– §571.204 “Steering control rearward displacement”
– §571.205 “Glazing materials”
– §571.213 “Child restraint systems”
– §571.217 “Bus emergency exits and window retention and release”
– §571.302 “Flammability of interior materials”
• Some apply only to the driver’s seat, such as:– Title 49 CFR §571.207 “Seating systems”
– §571.208 “Occupant crash protection”
– §571.209 “Seat belt assemblies”
– §571.210 “Seat belt assembly anchorages”
• Some applicability is dependent on gross vehicle weight rating (10k lbs. or less)
– §571.201, Occupant protection in interior impact
– §571.214, Side impact protection
88
Crashworthiness/CEM for Bus Transit Systems – Standards that Exist
• Altoona Bus Research and Testing
–Safety tests include the Handling and Stability Test and a Braking Performance Test.
• The Handling and Stability Test ensures the operator can maneuver the bus through a double lane change at a speed of 45 miles per hour.
• The Braking Performance Test subjects the bus to a series of brake stops from specified speeds, in addition to the evaluation of the parking brake performance on a twenty percent grade for a five-minute time period
–While these tests are necessary, they do not confirm or establish the crashworthiness of the bus.
-
June 28-29, 2017
45
89
Crashworthiness/CEM for Bus Transit Systems – Standards that Exist
• Altoona Bus Research and Testing
–Safety Benefits from other Altoona bus tests include detecting defects that are directly related to safety:
• Bus fires
• Cracked CNG cylinder support brackets
• CNG fuel system cracks/ leaks
• Fuel tank leaks
• Fire detection/ suppression system failures
• High current electrical short circuits
• Broken steering/ suspension components
90
Crashworthiness/CEM for Bus Transit Systems – Standards that Exist
• State Standards/ Administrative Rules
– Some states have adopted FMVSS for vans or buses manufactured or operated in their state.• Minnesota Administrative Rules, Chapter 8840.5940(1) Rollover
Protection, calls applicability of FMVSS 49 CFR Part 571.216 or 220 to all vans and buses.
• Wisconsin Administrative Code, Chapter Trans 330.10 (12) Frame, calls applicability of 49 CFR §393.20, (20) Seating, and (30) Windows and Windshields
• Rule Chapter 14-90, Florida Administrative Code, Vehicle Equipment Standards and Procurement criteria - FMVSS 49 CFR Part 571, Sections 102, 103, 104, 105, 108, 207, 209, 210, 217, 302, 403, and 404 and criteria for (8) emergency exits, (12) seat belts, and (13) safety equipment.
-
June 28-29, 2017
46
91
Crashworthiness/CEM for Bus Transit Systems – Standards that Exist
• Standards outside of U.S.– United Nations Economic Commission for Europe Regulations
• UNECE R-14: Seat belt anchorages and ISOFIX anchorages
• UNECE R-16: Seat belt restraint systems
• UNECE R-17: Seat anchorages (covers M3 vehicles not covered in UNECE R-80)
• UNECE R-25: Head restraints (headrests)
• UNECE R-34: Prevention of fire risks (collision related testing)
• UNECE R-36: General vehicle construction (load distributions and survivable space)
• UNECE R-43: Glazing materials
• UNECE R-66: Residual space available after rollover test
• UNECE R-80: Seats and seat anchorages
• UNECE R-114: Airbag replacement
• UNECE R-135: Pole Side Impact performance (only applies to buses that weigh less than 11,023 lbs.)
92
Crashworthiness/CEM for Bus Transit Systems – Standards that Exist
• Standards outside of U.S.
– Australian Design Rules• ADR Standard 3/03: Seats and seat anchorages
• ADR Standard 4/05: Seatbelts
• ADR Standard 5/05: Anchorage for seatbelts
• ADR Standard 8/01: Safety glazing material
• ADR Standard 34/02: Child restraint anchorages and child restraint anchor fittings
• ADR Standard 42/04: General safety requirements (includes external or internal protrusions)
• ADR Standard 59/00: Standards for omnibus rollover strength
• ADR Standard 68/00: Occupant protection in buses (seat performance)
-
June 28-29, 2017
47
93
Crashworthiness/CEM for Bus Transit Systems
• Other Guidelines and Recommended Practices– SAE Recommended Practice J2249_199901: Wheelchair tie-
down and occupant restraint systems for use in motor vehicles – technically focuses on requirements for vehicles that weigh less than 15,432 lbs. (7,000 kg) and notes that it may be possible to comply with desired results in larger vehicles without following the recommended practice
– FTA Vehicle Design Guidelines for low-floor vehicles: suggests buses operating in BRT environments provide adequate protection in the associated higher speeds
– APTA Procurement Guidelines: Section 6 – Technical Specifications 23.2: Crashworthiness (Note: Guidelines scheduled for review in FY 2018)
94
Crashworthiness/CEM for Bus Transit Systems
• Evaluation of current standards
– Secondary Impacts: Injury findings and recommendations from reviewed literature
• Frontal collisions – neck flexion or extension due to the lack of restraints and low seatback designs
– Compartmentalization designs and higher seatbacks
• Side impacts – head-to-head and head-to-body contacts and femur injuries of passengers seated on side facing seats
– Avoid side facing seating designs
• Rear-impacts – neck extension due to low seatback
– Higher seatback designs
• Austria study – mandate 3 point seat-belt system
-
June 28-29, 2017
48
95
Crashworthiness/CEM for Bus Transit Systems – Paratransit Body-on-chassis
• Rollover
– Dynamic (R-66) versus quasi-static (FMVSS 220)• UNECE R-66 adequately address the shortcoming of the FMVSS
220 standard test (Cichocki & Wekezer, 2007)
• “quasi-static load resistance testing of the roof structure does not give sufficient indication on how the structure will behave during a rollover accident.” (Gepner et al., 2010)
• Testing paratransit buses to the FMVSS 220 standard may lead to erroneous conclusions regarding bus strength and structural integrity (Bojanowski et al., 2011)
• the structural steel strain rate has no significant effect on the UNECE R-66 rollover test… the current quasi-static experimental approach used to investigate rollover crashworthy structural performance of paratransit buses is well grounded (Gepner et al., 2016)
96
• Rollover
– Dynamic (R-66) versus quasi-static (FMVSS 220) [Continued]• Florida Standard requires cutaway vehicles be tested via FE
model development, verification, experimental validation, final check using full scale rollover test, and calibration, with an additional requirement of an acceptable range for the Deformation Index which represents un-intruded residual space. (FDOT, 2007)
Crashworthiness/CEM for Bus Transit Systems – Paratransit Body-on-chassis
-
June 28-29, 2017
49
97
• Rollover – July 2014– Roadway crash in Florida
involving an aging passenger in paratransit bus resulted in minor injuries to the passenger and no injuries to the driver. The passenger compartment of the bus was proven to be safe. Compared to typical crashes, the reduced injuries in this case can be attributed to the improved design of paratransit buses
Crashworthiness/CEM for Bus Transit Systems – Paratransit Body-on-chassis
Body-on-chassis bus rolled over its roof three quarters of a turn before resting on its right side
98
Crashworthiness/CEM for Bus Transit Systems – Paratransit Body-on-chassis
• Side impact
– FMVSS 214 vs. IIHS side crash test vs. Florida standard
FMVSS 214IIHS side crash
testFlorida Standard
Bumper Height from
Ground330 mm (13 in) 379 mm (14.9 in)
Ford Explorer, Chevrolet S10, or Chevrolet C2500
Weight1,367.6 kg (3,015 lbs)
1,500 ± 5 kg (3,307 lbs)
Ford Explorer, Chevrolet S10, or Chevrolet C2500
Impact Angle 90 degrees 90 degrees 90 degrees
Impact Speed53 ±1.0 km/h
(33.5 mph)50 km/h
(31.1 mi/h)30 mph
Pass CriteriaCrash dummy head
injury criteria < 1,000
Crash dummy head injury criteria
< 1,000
Preserved residual space
-
June 28-29, 2017
50
99
Crashworthiness/CEM for Bus Transit Systems – Paratransit Body-on-chassis
• Side impact
– APTA guidelines indicate a bus can be deemed side impact crashworthy if the bus can withstand a 25 mph impact by a 4,000 lb automobile at any point, excluding doorways, with no more than 3” of permanent structural deformation at seated passenger height, and no sharp edges or protrusions in the bus interior.• APTA guidelines should be updated to use a side impact standard
similar to FMVSS 214 or the IIHS side crash test (Olivares, 2009)
– BEA indicates that truck and SUV sales account for more than 60% of vehicles sold.
• The increased height and weight of “the typical vehicle” should be accounted for (Kwasniewski et al., FDOT, IIHS, NHTSA)
100
Crashworthiness/CEM for Bus Transit Systems – NTSB Crashes
NTSB does not typically get involved in transit bus collisions. Like this 2016 NJ crash between two transit buses which resulted in 2 deaths and 17 injuries.
-
June 28-29, 2017
51
101
Concan, TX – March 2017: 13 fatalities – bus driver and 12 passengers
Davis, OK –September 26, 2014: 4 fatalities
Dolan Springs, AZ –January 2009: 7 passenger fatalities
102
Crashworthiness/CEM for Bus Transit Systems – NTSB Crashes
• NTSB Appenidx
Name
of crash
Location Date of
event
Type of Vehicle General Description Fatalities/
Injuries
Findings
NTSB/H
AR-
15/03
Davis,
Oklahoma
9/26/14 2008 Champion
Defender
32-passenger
medium-size bus
Bus rolled onto side
following an impact
with a truck-tractor
which had crossed
the median,
resulting in
passenger ejections.
4 fatalities,
11 injuries
Lack of; passenger
restraint system
use,
crashworthiness
side impact
standards, and
event data
recording deviceNTSB/H
AR-
10/01
Dolan
Springs,
Arizona
1/30/09 2007
Chevrolet/
Starcraft 29-
passenger
medium-size bus
Bus rolled 1.25 times
as a result of
overcorrection and
subsequent loss of
control.
7 fatalities,
10 injuries
Limitations of
medium sized bus
to retain and
protect passengers
in a rollover, and
need for EDR
device
HWY17
MH011
Concan,
Texas
3/29/17 2004 Ford E350
cutaway chassis
with 13-
passenger Turtle
Top Vanterra
medium-size bus
body
Front left corner
collision with pickup
truck that crossed
the center line.
13 fatalities,
1 injury
Primary evidence
indicates seat belt
use by all
occupants with no
EDR available. Still
under investigation
-
June 28-29, 2017
52
103
Crashworthiness/CEM for Bus Transit Systems – NTSB Recommendations
• Dolan Springs, AZ – HAR 10/01– H-10-2: develop regulatory definitions and classifications for each of the
different bus body types– H-10-3: improve roof strength, occupant protection, and window glazing
standards, include ALL buses with a GVWR above 10,000 pounds through rulemaking
– H-10-5-6: develop and require stability control system performance standards for new buses with a GVWR above 10,000 pounds
• Davis, OK – HAR 15/03– H-15-40: develop side-impact protection standard for all newly constructed
medium sized buses, regardless of weight– H-15-42 (Supersedes H-97-2): requires primary enforcement of the use of
seat belts for all passengers– Reiterates: H-99-50-51: develop and require roof strength performance
standards – H-99-49: recommends window glazing– H-10-3: described above
• Concan, TX – HWY17 MH011– Preliminary evidence leads to likely reiteration of the same crashworthiness
related recommendations
104
Crashworthiness/CEM for Bus Transit Systems – Needs Assessment/Gap Analysis
• Paratransit body-on-chassis “less than thirty-foot buses” account for 34% of total vehicles purchased with FTA grant funds between 2011 and 2015
• Paratransit trips are often
– Longer trips
– Operating in rural environments
– On two lane highways
– With higher traveling speeds
-
June 28-29, 2017
53
105
Crashworthiness/CEM for Bus Transit Systems – Needs Assessment/Gap Analysis
• Data difficulties
– Size and weight compatibility and operating environments make body-on-chassis medium sized bus occupants more susceptible to the possibility of injury or fatality when involved in a collision.
– FMVSS, FHWA Highway Statistics Series, and FARS fail to classify paratransit or cutaway vehicles leaving them in an “other” category, resulting in scarce data availability of cutaway collisions.
106
Crashworthiness/CEM for Bus Transit Systems – Needs Assessment/Gap Analysis
• Rural statistics– US population: 19%
– VMT: 30%
– Bus miles traveled: 37%
– Fatalities: 53%
– Share of fatally injured due to rollover: 39% (24% for urban)
• NHTSA reports that rural roads consistently have more annual fatalities and higher fatality rates per miles traveled than urban roads
-
June 28-29, 2017
54
107
Crashworthiness/CEM for Bus Transit Systems – Recommended Solutions
• With limited data available to prove the necessity of structural and secondary impact crashworthiness standards for general transit buses, voluntary guidance is recommended.
• Supplemental data supports the need to expand crashworthiness standard applicability to include body-on-chassis buses (medium-sized coaches). Additional detailed data collection and analyses will be required to support future rulemaking, given the lack of classification of body-on-chassis buses in currently available safety related databases.
108
Crashworthiness/CEM for Bus Transit Systems – Draft Recommendations
DRAFT Recommendation 1: FTA consider issuing crashworthiness/CEM standards for transit buses (those over 40 feet in length), including articulated vehicles, as voluntary and encourage the observance of existing standards established by APTA and those contained within the Federal Motor Vehicle Safety Standards, specifically FMVSS 214. There are currently no data that suggest that injuries and fatalities sustained by public transit riders in collision events were due to the loss of survivable space or intrusions within the cabin of transit buses. In addition, there is limited academic research that supports the need for national regulations related to the crashworthiness of transit buses or the utilization of CEM techniques or applications in the design and construction of these vehicles.
-
June 28-29, 2017
55
109
Crashworthiness/CEM for Bus Transit Systems – Draft Recommendations
DRAFT Recommendation 2: FTA consider additional quasi-static or dynamic testing of interior fittings, including passenger seating devices, attachments, and tracking/anchorages, and seatback designs, as examples to address injuries and fatalities that have occurred as a result of secondary impacts associated with collision events. There are limited data to suggest that injuries or fatalities in transit bus collision events are specifically due to the design of vehicle seating and associated apparatus. However, there has been academic research that indicates that certain vehicle seatback designs and tracking/anchorage assemblies can increase the likelihood of injuries or fatalities in secondary collision impacts.
110
Recommendation 3: FTA direct the study of four states that represent the majority of vehicles of less than 30 feet purchased with FTA funds. This study will include the collection of transit incident data for those vehicles, including collisions and roll over events, and associated injuries and fatalities. The research team analysis would establish the rate of injuries and fatalities resulting from these events. The states of New York, Pennsylvania, California, and Florida represent over 54% of all vehicles of less than 30 feet purchased with FTA Section 5310 funding. This analysis would prove very useful in establishing the need for crashworthiness standards for paratransit vehicles.
Crashworthiness/CEM for Bus Transit Systems – Draft Recommendations
-
June 28-29, 2017
56
111
Crashworthiness/CEM for Bus Transit Systems – Draft Recommendations
Recommendation 4: If the analysis performed in Recommendation 3 demonstrates a need for paratransit vehicle crashworthiness standards, FTA may consider further examination of standards for body-on-chassis or “cutaway” vehicles, specifically supporting the utilization of UNECE R-66, expanded applicability of FMVSS, or the Florida Standard, as appropriate, as a national standard for the design and construction of these vehicles. There are very limited data that indicates that injuries or fatalities in paratransit and rural public transit collision events are specifically due to the structural integrity of cutaway vehicles. The study performed under Recommendation 3 may lend a better understanding through more robust data collection and analysis.
112
Questions or Comments
-
June 28-29, 2017
57
113
Event Data Recorder (EDR) for Transit Bus
114
Event Data Recorders for Bus Transit Systems – SOW Outline
• Currently underway
– Background research and data collection/analysis
– Identify gaps in EDR bus standards
– Work with WG committee
• Draft recommendations of applicable standards and those that should be considered with modifications – target date: July 31, 2017
• NTSB reports provide EDR recommendations
• Draft final report by August 31, 2017
-
June 28-29, 2017
58
115
Event Data Recorders for Bus Transit Systems – Needs Assessment
• TCRP Synthesis 126 - Successful Practices and Training Initiatives to Reduce Accidents and Incidents at Transit Agencies shows EDRs are not universally used.
6%
14%
33%
33%
36%
67%
78%
78%
81%
86%
86%
94%
100%
0% 50% 100%
Collision avoidance…
Pedestrian warning…
Driver monitoring/…
Special rear vehicle…
Road or right-of-way…
Electronic data recorders
Stop announcements
Video data recorders
Exterior vehicle security…
Facility security cameras
Driver activated “panic” …
Onboard security cameras
Vehicle tracking system
116
Event Data Recorders for Bus Transit Systems – Needs Assessment
• EDRs continue to be universally recommended– The level of granularity decreases drastically when no
EDR is present in regards to the ability to investigate collisions to gain the necessary understanding of the leading factors.
– Responses to the call for comments on the National Public Transportation Safety Plan included recommendations from several respondents that event data recorders be included on all bus vehicles.
– FTA’s presentation, FTA Safety Program: Rulemaking Update and Transit Agency SMS Implementation on February 27, 2017 by Candace Key, identifies event data recorders as a proactive approach to identifying safety concerns as a part of the SMS pillar of Safety Assurance.
– NTSB recommendations (more on these later)
-
June 28-29, 2017
59
117
Event Data Recorders for Bus Transit Systems – Standards that Exist
• Examples of standards/rules that exist include:– Title 49 CFR 229.135 – Event recorders required for trains
operated over 30mph. Includes data elements, crashworthy, memory, and mounting location requirements. Not directly bus applicable.
– 49 CFR 563 – Not directly transit bus applicable due to weight limitations (includes buses manufactured after 9/1/2012 with GVWR < 8,500 lbs.) Includes data elements, format, capture requirements, crash survivability, and data retrieval requirements.
– SAE J2728 - Heavy Vehicle Event Data Recorder (HVEDR) Standard includes basic functionality with data element recommended practices mentioned specifically.
– SAE J1698 – Event Data Recorder Standard includes output data definitions, retrieval tool protocol, and compliance assessment recommendations.
– IEEE 1616 and 1616a - Motor Vehicle Event Data Recorders is applicable to both light and heavy duty vehicles and includes data collection, storage, retrieval, and export protocols for data elements.
118
Event Data Recorders for Bus Transit Systems – Other Guidelines
• Other EDR for bus guidelines– APTA Standard Bus Procurement Guidelines TS 87.
Event Data Recorders (EDR) “Alternative” indicates EDRs should be installed, including location, communication lines, settings, minimum accelerometer equipment, and data collection guidance.
– Florida requires that all buses purchased through the state procurement program be equipped with a vehicle data recorder which detects G-forces in three axes, detects reverse, brake, and turn signals, and the data must be recorded and retained for a maximum of 60 seconds prior to an event and 15 seconds following an event.
-
June 28-29, 2017
60
119
Concan, TX – March 2017: 13 fatalities – bus driver and 12 passengers
Davis, OK –September 26, 2014: 4 fatalities
Dolan Springs, AZ –January 2009: 7 passenger fatalities
120
EDRs for Bus Transit Systems – NTSB Recommendations
• Dolan Springs, AZ – HAR 10/01– H-10-7 (requires all vehicles to be equipped)– H-10-14 (minimum standards for EDRs)– H-10-15 (requires EDR to meet set standards)
• Davis, OK – HAR 15/03– Reiterates: H-10-7 (requires all vehicles to be
equipped)– H-10-14 (minimum standards for EDRs)– H-10-15 (requires EDR to meet set standards)
• Concan, TX – HWY17 MH011– Preliminary evidence leads to likely reiteration of
the same EDR related recommendations
-
June 28-29, 2017
61
121
EDRs for Bus Transit Systems – NTSB Video System Recommendations
Note from SOW: “For the purpose of this activity, this will include the traditional form of event recorders or “black boxes” installed on public transit coaches and paratransit vehicles.”
• NTSB Safety Report: NTSB/SR-15/01 – Commercial Vehicle Onboard Video Systems– Onboard video systems on transit buses and other heavy vehicles
had a direct benefit in several previous accident investigations, especially regarding driver and passenger behaviors. Proactive use of this recorded information can result in long-term safety benefits.
– “The continued investigation of crashes with video recordings is essential to improve bus occupant protection and also to increase our knowledge of biomechanics, injury causation, and short- and long-term injury outcomes. Ultimately, this knowledge will lead to improvements in the lifelike quality of crash test dummies.”
– Safety Recommendation H-15-001 – incorporate procedures for collecting and using crash data from video-equipped buses.
– Safety Recommendation H-15-002 – ensure onboard video system provides visibility of the driver, each occupant seating location, forward of the vehicle, optimized frame rate, and low-light recording capability.
122
EDRs for Bus Transit Systems – Other Non-Transit Related Considerations
• NHTSA (2008) – Analysis of Event Data Recorder Data for Vehicle Safety Improvement– Focused on EDR file format and potential improvements,
assessment of crash types where EDR data exists, review of usefulness of data in accident reconstruction analyses, and determination of methods by which researchers could use EDR information.
• Congressional Research Service Report R43651 (2014) –“Black Boxes” in Passenger Vehicles: Policy Issues – “NHTSA is proposing that all new light vehicles have EDRs
installed in the future. Under previously adopted NHTSA rules, these devices have to capture at least 15 types of information related to the vehicle’s performance in the few seconds just before and immediately after a crash serious enough to result in deployment of airbags.”
– EDRs have the potential to make a significant contribution to highway safety.
-
June 28-29, 2017
62
123
Event Data Recorders for Bus Transit Systems – Other Research
• UNECE has considered EDR requirements several times dating back to 2004, and has vowed to continue to propose EDR inclusion as an agenda item to resume future consideration.
• FDOT/CUTR Report (2009) – Evaluation of Electronic Data Recorders for Incident Investigation, Driver Performance, and Vehicle Maintenance– “The public transit industry will benefit from the
expanded use of EDRs in transit vehicles.”
– EDRs have the potential to minimize frivolous lawsuits, assist in handling complaints, monitor bus operator performance, and provide indicators of poor performance of both the operator and the vehicle.
124
-
June 28-29, 2017
63
125
Event Data Recorders for Bus Transit Systems – Other Research
• Transportation Safety Board of CanadaRecommendation R15-03 (December 2015) –“The Department of Transport require commercial passenger buses to be equipped with dedicated, crashworthy, event data recorders.”– Transport Canada (TC) response – “There are no
United States or United Nations safety regulations requiring event data recorders (EDR) on large commercial vehicles of any type.”
• TC hired a consultant to conduct EDR research in March of 2017.
126
Event Data Recorders for Bus Transit Systems – Moving Forward
• Our questions to you:
– Are your bus fleets equipped with EDRs?
– Are you aware of any bus EDR standards or guidance that is not already mentioned?
– If you have telemetry or video based event recorders, do your EDRs capture anything your video based system does not capture?
– Do you have any current concerns regarding EDRs?
– What concerns might you anticipate if EDR standard applicability were expanded to be inclusive of all bus vehicles regardless of weight?
-
June 28-29, 2017
64
127
Questions or Comments
Transportation Technology Center, Inc., a subsidiary of the Association of American Railroads
© TTCI/AAR. p128
Rail tunnel design,
construction, maintenance
and rehabilitation –FTA Working Group
TTCI
Anna Rakoczy
Stephen Wilk
MC Jones
-
June 28-29, 2017
65
© TTCI/AAR, 6/21/2017. p129
® Outline
♦Work breakdown / Scope
♦ Industry needs
♦Literature Review
♦Data Collection
♦Site Visit
© TTCI/AAR, 6/21/2017. p130
® Rail Tunnel – Work Breakdown / Scope
♦ Objective - review of specifications and guidelines
♦ Work Breakdown
●Task 1 - Background Research
▲Inventory of current standards
▲Technical requirements assessment
▲Data collection
●Task 2 – Applicability Analysis and Modification of Standards
▲Review current standards and identify other specifications
▲Identify required standards
▲Identify standards that need modifications
-
June 28-29, 2017
66
© TTCI/AAR, 6/21/2017. p131
® Outline
♦Work breakdown / Scope
♦ Industry needs
♦Literature Review
♦Data Collection
♦Site Visit
© TTCI/AAR, 6/21/2017. p132
® Industry Needs
♦ Safe design, construction, and operations
●Example 1 - The Howard Street Tunnel fire
●Example 2 - Channel Tunnel fire
●Example 3 - Gerrards Cross Tunnel
-
June 28-29, 2017
67
© TTCI/AAR, 6/21/2017. p133
® Industry Needs
– Howard Street Tunnel Fire
● Accident Number: DCA-01-MR-004
● Location: Baltimore, Maryland
● Date and Time: July 18, 2001, 3:08 p.m.
● Accident Type: Derailment and fire
● Companies: CSX Transportation
● Injuries: 5 (minor)
● Fatalities: None
● Cost: $12 million
© TTCI/AAR, 6/21/2017. p134
® Industry Needs
– Howard Street Tunnel Fire
♦ Derailment of 60-car CSX train transporting hazardous
material in the Howard Street Tunnel in Baltimore, Maryland
on July 18, 2001.
♦ Car numbers 46 through 56 derailed and became
disconnected from the first 45 cars.
● One of the derailed tank cars, carrying 28,600 gallons tripropylene, had ruptured and the escaping flammable liquid had caught fire.
● This fire had spread onto paper and wood products in other cars.
● Another tank car ruptured releasing 2,554 US gallons (9,670 L) of hydrochloric acid.
● Later, a 40-inch cast iron water main above the tunnel burst due to deformation, eventually releasing about 14,000,000 US gallons (53,000,000 l) of water.
● The fire burned for about 5 days
-
June 28-29, 2017
68
© TTCI/AAR, 6/21/2017. p135
® Industry Needs
– Howard Street Tunnel Fire
♦ Impact:
● Thousands of Baltimore workers were forced to leave their jobs and unable to come back for several days.
● The tunnel closing caused major disruption to CSX freight traffic, Maryland Rail Commuter (MARC) commuter trains, and to Central Light Rail Line trains and bus lines that traversed Howard Street.
● To avoid the Howard Street Tunnel, CSX had to reroute their trains, incurring a three- to four-day delay.
♦ No significant structural damages
♦ Tunnel officially reopened to traffic 6 days after accident
♦ A National Transportation Safety Board report took three
years to be prepared
♦ Investigation unable to find the accident cause
© TTCI/AAR, 6/21/2017. p136
® Industry Needs
– Channel Tunnel Fire
♦ 1996 Channel Tunnel fire:
● Fire occurred on a train carrying Heavy Goods Vehicles (HGVs) and their drivers through the Channel Tunnel from France to the United Kingdom (UK)
♦ 2008 Channel Tunnel fire:
● The incident involved a France-bound Eurotunnel Shuttle train carrying heavy goods vehicles (HGVs) and their drivers.
-
June 28-29, 2017
69
© TTCI/AAR, 6/21/2017. p137
® Industry Needs
– Gerrards Cross Tunnel
♦ Railway tunnel located in Gerrards Cross, Buckinghamshire,
England.
♦ Partially collapsed during construction on 30 June 2005.
♦ No injures but a train heading towards the tunnel performed
an emergency stop.
© TTCI/AAR, 6/21/2017. p138
® Outline
♦Work breakdown / Scope
♦ Industry needs
♦Literature Review
♦Data Collection
♦Site Visit
-
June 28-29, 2017
70
© TTCI/AAR, 6/21/2017. p139
® Rail Tunnel – Literature Overview
♦ Specifications related to the following major topics
●Design
●Transit tunnel security and risk assessment
●Construction
●Maintenance and structural monitoring
●Rehabilitation
© TTCI/AAR, 6/21/2017. p140
® Rail Tunnel – Design
♦ Design research to include
●Planning process
●Geotechnical investigation
▲High groundwater pressure and inflow;
▲Unstable ground such as running sands,
▲Sensitive clays,
▲Faults and shear zones
●Permanent Lining
-
June 28-29, 2017
71
© TTCI/AAR, 6/21/2017. p141
® Literature Review – Design
♦ Considerations:
●Geological and geotechnical conditions influence tunnel design
●Good knowledge of expected geological conditions is essential
♦ Design - Railway Specific:
●AREMA Manual (2016)
●LA Metro Rail Design Criteria – Section 5 –Structural/Geotechnical (2012)
♦ Design - Roadway Specific:
●FHWA – Design and Construction of Road Tunnels (2009)
●FHWA – Tunnel Operations, Inspection, and Evaluation (TOMIE) (2015)
♦ Other notable literature:
●Looking for specifications/guidelines for railway tunnels design and construction
© TTCI/AAR, 6/21/2017. p142
® Literature Review – Other Design
♦ Liner finishes, refuge niches, drains, lighting,
communication, etc.
♦ Existing literature:
●AREMA
▲Refuge niches: 200 feet and staggered, size not specified
▲Install drains whenever groundwater encountered, drain type depends on groundwater constituents and effect of water aeration
●FHWA – Design and Construction of Road Tunnels (2009)
-
June 28-29, 2017
72
© TTCI/AAR, 6/21/2017. p143
® Rail Tunnel – Design Of Supporting
Systems
♦ Design research to include
●Major systems designed to support the tunnel system, i.e.
▲Mechanical
▲Electrical
▲Communication Design
▲Smoke Ventilation
▲Fire/smoke evacuation
▲Security systems
© TTCI/AAR, 6/21/2017. p144
® Literature Review – Ventilation
♦ Considerations:
●Tunnel length, tunnel shape, train speed, etc.
♦ Existing literature:
●AREMA (Chapter 1 – Part 8 – Section 7)
▲Airflow requirements, air velocity, monitor gases
●FHWA – Design and Construction of Road Tunnels (2009)
●Manuals typically list types of ventilation
Longitudinal Ventilation
FHWA/FTA Inspection Manual
-
June 28-29, 2017
73
© TTCI/AAR, 6/21/2017. p145
® Rail Tunnel – Literature Overview
♦ Specifications related to the following major topics
●Design
●Transit tunnel security and risk assessment
●Construction
●Maintenance and structural monitoring
●Rehabilitation
© TTCI/AAR, 6/21/2017. p146
® Rail Tunnel – Transit Tunnel Security Risk
Assessment
♦ Tunnel threat
●Explosive
●Chemical, biological or radiological
●Sabotage
♦ Vulnerability environment of tunnels
●Access, length, location, geography
♦ Tunnel security design:
●Emergency call station (ECS)
●Global Positioning System (GPS)
●Automated vehicle locator (AVL)
●Positive train control (PTC)
●Supervisory control and data acquisition (SCADA)
-
June 28-29, 2017
74
© TTCI/AAR, 6/21/2017. p147
® Literature Review – Security and Fire
Safety
♦ Existing literature:
●APTA – Tunnel Secur