connected intersections (ci) committee meeting
TRANSCRIPT
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Connected Intersections (CI) Committee
Meeting
Mon Sept 21 (3:00 PM – 5:00 PM EDT)
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Agenda (Goudy, Thai)
1. Call to Order
2. Anti-Trust Guidelines
3. Roll Call of Committee members
4. Meeting Purpose and Objectives
5. Progress to Date
6. Report from each Task Force
• Accomplishments
• Next Steps
7. Project Schedule
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Anti-Trust Guidance (Narla) – 1 minute
– The Institute of Transportation Engineers is committed to compliance with antitrust laws and all meetings will be conducted in strict compliance with these antitrust guidelines. Further if an item comes up for which you have conflict of interest, please declare that you have a conflict of interest on the matter and recuse yourself from action on that item.
– The following discussions and/or exchanges of information by or among competitors concerning are prohibited:
• Prices, price changes, price quotations, pricing policies, discounts, payment terms, credit,
allowances or terms or conditions of sale;
• Profits, profit margins or cost data;
• Market shares, sales territories or markets;
• The allocation of customer territories;
• Selection, rejection or termination of customers or suppliers;
• Restricting the territory or markets in which a company may sell services or products;
• Restricting the customers to whom a company may sell;
• Unreasonable restrictions on the development or use of technologies; or
• Any matter which is inconsistent with the proposition that each company must exercise its
independent business judgement in pricing its service or products, dealing with its
customers and suppliers and choosing the markets in which it will compete.
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Roll Call of Committee Members (Goudy, Thai)
• John Thai, City of Anaheim
• Raj Ponnaluri, Florida DOT
• Christina Spindler, Wyoming DOT
• Ray Starr, Minnesota DOT
• Ed Seymour, Texas A&M
Transportation
• Faisal Saleem, AZ McDOT Maricopa
County
• Whitney Nottage, Q-Free/Intelight
• Steve Bowles, 360 Network Solutions
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• Roy Goudy, Nissan
• Mike Schagrin, McCain
• Mike Shulman, Ford Motors
• Vivek Vijayakumar, General Motors
• Michael Stelts, Panasonic
• Jim Misener, Qualcomm
• Doug Schmidt, Aptiv
• Jay Parikh, CAMP/IOO-OEM Forum
• Justin McNew, JMCRota
• Vacant
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Review Purpose and Objective (Thai)
– Purpose:
• Update the CI Committee on the progress
– Objectives
• Present the draft ConOps document and the progress of each Task
Force
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▪ Initial Draft ConOps document – Distributed August 19
▪ ConOps Walkthrough – August 31 to September 2
▪ Draft ConOps document – Distributed September 15 for 2-
week comment period.
▪ Each Task Force meeting regularly
▪ Task Force Chairs and Subject Matter Experts (SMEs)
meeting every Friday for progress and coordination
Progress (Thai)
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Positioning Task Force
Justin McNew / Jim Misener (co-chairs)
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Accomplishments since August Committee Meeting
1. Moving from ConOps/User Needs → Requirements
2. Validated primary user needs assigned to TF, Positioning Correction and RTK
Positioning Task Force
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2.4.2.5.1 Positioning Corrections
A connected intersection needs to provide data in a
standardized format that helps vehicles to achieve the
required positioning accuracy at intersections where this is
needed. For example, position corrections data may provide
information that allows an application on an OBU/MU to
calculate its current position with enough accuracy to
determine which lane it is in. S S P
2.4.2.5.2 Real-Time Kinematic
When implementing Real-time Kinematic (RTK) positioning,
all GNSS devices in the broader IOO system implementation
need to use and broadcast a common RTK source as an
RTCM broadcast, or the devices need to use a common
(network-based, not broadcast) RTK source for their position
correction. P
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Accomplishments since August Committee Meeting (cont’d)
3. Did not accept secondary user need assigned to TF, Time Source
2.4.2.2.1 Time Source
A connected intersection needs to use the same time reference and with sufficient precision as
OBUs/MUs so non-infrastructure applications can properly interpret time points. This allows the
proper interpretation of time-sensitive data by applications and permits reactions to be based on the
same understanding of time.
Reasoning: Mismatch of time scale – this user need does not need
high-precision timing information.
Issue: This is an orphan. No primary TF has been assigned the Time
Source user need. TCI, SPaT/Map and Positioning TFs have been
given “secondary” assignments.
Positioning Task Force
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Next Steps: Move toward requirements definition
1. (Next meeting) Determine split between map and accuracy definition
High definition maps → lower positioning accuracy and vice versa
2. Recognizing RTK user need:
Determine RTCM version
Determine how to provide position accuracy when RTK is not available
Explore/note other alternatives to support RTK (RTCM broadcasts
from the CI is not the only solution)
Positioning Task Force
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Q & A
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Security Task Force
Jimmy Upton / William Whyte (co-chairs)
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1. Accomplishments since August Committee Meeting
2. Next Steps
3. Q&A
Security Task Force
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Accomplishments Since August Committee Meeting
– User needs were presented last month
– They were discussed during the ConOps review
– No substantial changes were made
– Security TF has begun the process of developing requirements from those needs
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Next Steps
– Michaela (SME) is developing candidate set of requirements for review at our next meeting
– We will review and update those requirements over the next few meetings
– Will liaise with other Task Forces on some security matters as appropriate
– Next meeting: Thursday, September 24, 3pm Eastern
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Q & A
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Testing/Conformity Task Force
Jay Parikh / Christina Spindler (co-chairs)
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1. Accomplishments since August Committee Meeting
2. Next Steps
3. Q&A
Testing/Conformity Task Force
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T&C TF Topics
1. Testing Scope
2. Testing Methodology
3. Dependencies Influencing Testing
4. Challenges and Opportunities
5. Candidate List of Test Tools
6. Candidate List of Test Documentation
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CI Testing Scope – Identifies Testing Needs and
Requirements of Various Interfaces
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In Scope Interfaces
1. SPaT
2. MAP
3. RTCM
** Indicates Out of Scope.
*** Indicates limited to what
is minimally necessary to
accomplish testing.
Focus of this
Document
Supporting Interfaces
(limitations)
** Out of ScopeField
CabinetGNSS
RSU
Traffic Management
Server
(Signed and Unsigned)
Map Data
Server
Vehicle (OBU) /
MU
Connected Intersection Scope
(Infrastructure)
Center Elements Field Elements Roadway
SPaT
+
MAP
+
RTCM
***J2735 SPaT Or
NTCIP 1202 Or
Battelle Blob
RTCM
** NTCIP 1202v03
** NTCIP 1218
RTCM
MAP
Satellites
*** SCMS
Interface
SCMS
Note: RSU HSM needs to be located where the message is being signed.
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NTCIP 1202.3
Compliant SPaT
Objects
Signal Controller SPaT Generation as per the time plan, external input, etc.
RSU – Conversion to J2735
• SPaT from NTCIP Objects to SPaTmessage
• Intersection map to MAP message
• Position correction to RTCM message
TMC Map / Position
Correction
NTCIP obj
stream (PCAP)
SPaT/MAP/RTCM (PCAP) analysis tool• Kapsch Tool –
• Visual confirmation + PCAP• Wireshark –
• Sniffer Packet Capture• Other –
Out of scope:• Physical h/w mounting/testing of field equipment• Wireless comm, protocol and message
transmission• Stress test (RSU, Controller, etc.)
• Physical and interface • Gap, ambiguity, etc. in other standards
• NTCIP 1218, NTCIP 1202.xx, NEMA TS-2, etc.
Compare and
analyze
Message Level Test.
Requirements Verification Method: Test• SPaT data from controller – NTCIP Objects to RSU
• Capture SPaT objects (PCAP)
• Verify and confirm SPaT data as per NTCIP 1202.3 standard
• Verify and confirm signal state in SPaT data with signal light
• SPaT/MAP/RTCM message broadcast from RSU
• Capture SPaT/MAP/RTCM messages
• Verify and confirm message transformation and data as per:
• Required and optional elements for RLVW
• J2735 structure and format and CCI guideline
• Correctness of data in the message (verify against NTCIP objects for transformation check)
• TimeMark, signal phase/time as generated by the controller
• Correlate data in SPaT/MAP for the intersection (e.g. intersection ID, signal group and lane
IDs, etc.)
End-to-End Test. (Test-point to Test-point)
Requirements Verification Method: Data Collection and Analysis• Compare and analyze data values in PCAP (packet capture) streams.
• Field test (Ref. Implementation)
Verify
CI Test Environment – Identifies Test Points and Test
Methodology
MAP Test for Lane
Determination
Field Test
SPaT Test
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CI Test Dependencies – May refine (alter) what elements need
to be tested at test points.
T&C
Test requirements for
conformity
SPaT/MAP TF• Recommendation
and/or suggested
solutions
Controller Issue TF• Identify and address
how SPaT data should
be provided
• Establish test
procedures from
SPaT/MAP TF
recommendations
• Establish test
procedures for
data from
controller
issues TF
In cases where infrastructure
subsystem performance cannot
be modified to meet RLVW
requirements due to either local
regulatory requirements or the
signal controller system
capabilities, mutually agreed
default behavior to be
established and tested.
• GNSS: Positional accuracy test procedure – needs discussion
• Security (SCMS):
• Message trustworthiness
• Refer to CAMP SCMS CV Pilots Documentation
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Challenges and Opportunities
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– Challenges• Multiple configuration options (message
standards) for communications between traffic controller → RSU
▪ J2735 SPaT data vs. message
▪ NTCIP 1202 v03 (data objects)
▪ “Battelle Blob” (NTCIP 1211 data objects)
• Multiple configuration options for position corrections
▪ RTCM (DGNSS) from local base station
▪ Vendor specific implementation (eg. NYC Pilot)
▪ RTK (subscription based)
– J2735 provides encapsulation of RTCM
• Multiple configuration options for MAP message
▪ Intersection geometry + allowed movement
• Outside of SCMS, Security is largely undefined
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Challenges and Opportunities
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– Opportunities
• Leverage existing Test Tools and Test Documentation
• Vehicle centric (CAMP, CV Pilots)
• Infrastructure centric
• We want to bring together a harmonized package (across various
ongoing standards and deployments) into one package with a
“focus” on infrastructure.
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Candidate List of Test ToolsInterface Test Tool Owner Comment
RSU → OBU
(SPaT/MAP)
CAMP Visualization Tools CAMP Information provided by J. Parikh. Tool provides
info about movements associated with the lane,
data capture, and post analysis. Covers MAP.
RSU → OBU
(SPaT/MAP)
Certification Tools Part of OmniAir Certification
Process (Use V2X Hub)
Information provided by R.Roebuck.
Covers MAP. Will add V2X Hub.
Traffic Controller → X NTCIP 1202 v03
Conformance Test Tool
City of Anaheim / FHWA Information provided by M. Insignares. Under
Development. J. Thai is the COTR.
Traffic Controller → X NTCIP 1202 v03 connection
to RSU
FHWA / Saxon Labs
(developer Leidos)
Randy. Incl. Test Cases for SPaT.
Traffic Controller → X Collects SPaT (Battelle Blob)
Data
TTI Jay/CAMP & Hassan/TTI.
Demonstration: Sep 18 by TTI.
Tool synchronizes data from controller (movement)
and SPaT data.
Provides intersection status (preempt, flash, etc)
Available on FHWA web site.
RSU → OBU waveBEEtouch Nordsys Tablet-based tool. Jay provided link to the cut-
sheet.
https://www.nordsys.de/en/v2x-products/283-
wavebeetouch.html
RSU, OBU CAVE Device FHWA / Saxton Labs D. Curtis is the COTR. Combines RSU, Signal
Controller, V2X Hub.
Presentation: Sep 18 by Leidos.
GNSS → RSU TBD TBD Jay to reach out.to GNSS TF.
Needs to support J2735 formats.
RSU → OBU Danlaw CV Deployments Ask Bob R. and David B. about NYC.
Danlaw has tools. Used in NYC. Incl.
Visualization of PCAP data collected.
Randy will reach out to Danlaw.
TBD TBD TS10 Group Based on RSU 4.1.
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Candidate List of Test Documentation
Document Name, Date Comment Sponsor Test
Plan
Test
Proce-
dures
Test
Cases
Test
Log
Test
Report
Test Plan for Connected Vehicle
(CV) Pilots Phase 2
Interoperability Testing, May 15,
2018
Provided by J. Anderson, also D.
Benevelli
FHWA X Data
Collection
X
Connected Vehicle Pilots Phase
2 Interoperability Test Test
Report, November 9, 2018
Provided by J. Anderson FHWA X X X
Test Procedure for Verifying
SPaT and MAP Messages,
September 18, 2019
Provided by J. Parikh CAMP X
SPaT Challenge Verification
Document, October 30, 2017
Provided by J. Parikh CAMP X
Test Readiness Review
Checklist
Provided by J. Anderson.
Useful for tracking/conducting test
readiness review (TRR) which is the
final go/no-go decision for conducting
the test.
FHWA X X
Interoperability Test Notebook Provided by J. Anderson.
Used to create physical notebooks for
data collection and tracking of each test.
FHWA X
Interoperability Test Compiled
Notebook
Provided by J. Anderson.
Spreadsheet format to consolidate
information collected from the
notebooks.
FHWA X
Actual Run Order and Start
Times
Provided by J. Anderson
Consolidated list of all test runs and in
what order.
FHWA X
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Test Plan
Test Execution
Test Plan
Test Cases TC001 TC003 TC004 TCnnn
TP002
Message Level
Test
TP001
End-to-End
Test Data Capture
TC002
Test Reports Test Logs Test Incident
Reports
Test Summary Report
Test
Procedures
Test Execution
Requirements to
Test Case Traceability
Requirements
Document
(by Reference)
DRAFT Connected Intersections Test Documentation Organization
Based on Review of Existing Test Documentation gathered.
• TP001 – End-to-End Test Data Capture (Test
Point to Test Point). Provides analysis-based
Verification of Data Collected over a Period of
Time between 2 end points.
• TP002 – Message Level Test. Provides Data
Verification of Individual Message Content. May
be used stand-alone or in conjunction with End-
to-End data captured.
• TP003 – Field Test (Reference Implementation)
TP003
Field Test (Ref.
Implementation)
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Traffic Controller Issue Task Force
Kevin Balke / Roy Goudy (co-chairs)
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1. Accomplishments since August Committee Meeting
2. Red Light Violation Warning (RLVW)
3. Next Steps
4. Q&A
Traffic Controller Issues Task Force
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Accomplishments since August Committee Meeting
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– Focus is on issues that have to do with Traffic Controllers and Traffic Control Operations
• Gaps and ambiguities that have already occurred
• Traffic operational scenarios that are potentially problematic
– Held 3 Task Force Meetings
• Identified User Needs from CI ConOps where the TCI TF may
contribute requirements
• Currently continuing the work on RLVW application that started in
the Confidence Factor Subcommittee
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Accomplishments since August Committee Meeting (cont.)
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– Held 2 Confidence Factor Subcommittee Meetings
• Goal to find a workable solution for a confidence factor for
predicting the next change in signal indications
• Initial simple percentage not suitable for Controller Manufacturers
• Proposed confidence levels based on controller state not suitable
for Automotive OEMs
• Determined that for safety applications such as RLVW, nearly
100% confidence is required
• Developed draft document describing RLVW needs
▪ Expecting vehicle-side input from CAMP-CVPFS driven activity
• Suspended Confidence Factor meetings to engage Task Force on
RLVW
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Red Light Violation Warning (RLVW)
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– Traffic signal controllers allow traffic engineers to program them to safely maximize traffic flow
– Under fully actuated signal operation:
• Termination of green time is not an event that can be predicted with
any certainty
• Yellow change interval timing has a high confidence/certainty
(nearly 100%)
– Yellow change interval timings are generally set to allow driver to:
• Stop before entering the intersection or
• Enter during yellow but allow signal to change to red while vehicle
is still intersection
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Red Light Violation Warning (RLVW) (cont.)
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– Based on RLVW document, the need is to provide an alert so the driver may clear the intersection while in yellow
Intersection Width
Crosswalk
Stop Bar
Direction of Travel
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Red Light Violation Warning (RLVW) (cont.)
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– This means:
• A time mark is needed for the imminent termination of green at
approximately two seconds before the actual green termination in
the field
• Referring to this as Advance Warning of End of Green (AWEG)
– RLVW based on yellow change interval time + AWEG will provide time for drivers to:
• Stop before entering the intersection or
• Enter and clear intersection while signal is in yellow
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Red Light Violation Warning (RLVW) (cont.)
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– TCI TF is seeking to offer some level of AWEG support
– Need different methodologies to accommodate high variability in intersection geometries, control strategies, and existent infrastructure
– Develop a set of recommended changes for CIs based on the local factors
– Provide the maximum amount of AWEG feasible without a negative impact to the intersection safety and efficiency
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Red Light Violation Warning (RLVW) (cont.)
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– Original RLVW document has been updated
– Draft contains proposed methods for AWEG under various conditions
– Draft is under review by the TCI TF
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Next Steps
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– Continue with development of proposed RLVW solution(s)
– Develop Confidence Factor method for non-safety critical applications
– Requirements development for user needs
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Q&A
Traffic Controller Issues Task Force
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SPaT/MAP Task Force
Michael Maile / Ray Starr (co-chairs)
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1. Accomplishments since August Committee Meeting
2. Next Steps
3. Q&A
SPaT/MAP Task Force
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Discussed Requirements
1. Mandatory, Required and Optional
2. Road Regulator ID
3. Pedestrian movement state
4. Flashing Yellow Arrow state
5. Protected versus Permissive
6. Protected versus Permissive Clearance
SPaT/MAP Task Force
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Other Activities
1. Interacted with the controller task force and sub-committees
2. Continued discussion concerning end of green
SPaT/MAP Task Force
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Next Steps
1. Signal time change details
a. Start time
b. Min End Time
c. Max End Time
d. Likely Time
e. Confidence
2. MAP requirements
a. Node placement & representation
b. Pedestrian facilities
c. Speed limit that varies by approach
d. Connection ID for optional data elements
3. Performance Requirements
SPaT/MAP Task Force
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Q&A
SPaT/MAP Task Force
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Project Schedule
– Final Concept of Operations – October 4
– Requirements
• Initial requirements from each Task Force – November 12
• Requirements Walkthrough – week of November 30
• Complete Requirements – January 4
– Draft Implementation Guidance Document (April 2021)
– Validation (to be determined April – June 2021)
– Publish Final Implementation Guidance Document (September 2021)
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• To participate in a Task Force, send an e-mail to:
• Please indicate which task force(s) in the e-mail
• Participation limited to no more than 3 task forces
Participation (Thai)
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– Thank you!
Adjourn
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