march 20, 2011 presented by: sue d’agnese, region 1 traffic manager overview of: road safety audit...
TRANSCRIPT
March 20, 2011Presented by: Sue D’Agnese, Region 1 Traffic Manager
Overview of:
ROAD SAFETY AUDIT (RSA) PROCESS & APPLICATIONS
OR210 Scholls Ferry Rd: Cascade Ave to OR 217 SB
Off-ramp Road Safety Audit – Kick off Meeting
Presentation OutlinePresentation Outline
What is a Road Safety Audit (RSA)?Overview of Federal Highway Administration (FHWA) RSA ProcessRSA Projects in Region 1– Mt. Hood Highway RSA– US 30 Safety Corridor– Hwy 212 @ Dubarko– TV Hwy @185th– Mt Hood Hwy Timberline- Meadows
Benefits of RSAs
What is a Road Safety Audit?What is a Road Safety Audit?
A road safety audit is aformal safety performance examination
of an existing or future road or intersection by an independent multi-disciplined audit team.
What is a Road Safety Audit?What is a Road Safety Audit?
Formal: Procedures and documentation
Safety performance: Focus on safety
Independent: Auditors detached from project team
Audit team: General experience and specialists
A road safety audit also…A road safety audit also…
Considers the safety of all road users
Examines the interaction of project elements
Considers interactions at the borders or limits of the project
Proactively considers mitigation measures
A road safety audit is NOT….A road safety audit is NOT….
… a standards check, examining adherence to design guidelines.
… a backdoor to redesign the project.
What is a Road Safety Audit?What is a Road Safety Audit?
A road safety audit seeks to identify opportunities to improve safety
FHWA RSA ProcessFHWA RSA Process
RSA Process – 2 Pre-Audit MeetingsRSA Process – 2 Pre-Audit Meetings
Pre-Audit Meeting: RSA Start up MeetingPre-Audit Meeting: RSA Start up Meeting
Presentation of Data to RSA Team by RSA Team Facilitator
Detailed DrawingsKey Resource member’s data and inputKey Stakeholder inputAerial photographsBackground reportsDesign criteriaCollision history Detailed crash analysisTraffic volumes Project design elementsProject design constraints
Pre-Audit Meeting: Kick Off MeetingPre-Audit Meeting: Kick Off Meeting
Meeting with Project Owner and RSA team to provide goals of the RSA
Define the RSA processDrawings and AerialsBackground reportsDesign criteriaCollision historyTraffic volumesProject objectives (owner)– Why is RSA being conducted?
Project design elementsProject design constraints (owner)
RSA Process – Field ReviewRSA Process – Field Review
Field ReviewField Review
Observe road user characteristics
Observe surrounding land uses
Observe link points to the adjacent transportation network
Look for:– driveway issues– roadside hazards– sight distance
obstructions– Anything impacting safety
Field ReviewField Review
Consider all users
Consider driver behavior
Drive the site
Drive all approaches
Make all turns
Walk/bike the project area
Take notes
Take lots of photos
Field ReviewField Review
Observe conditions during:peak and off-peak traffic periodsdry and wet weather conditionsday and night conditions
RSA Process – RSA AnalysisRSA Process – RSA Analysis
RSA Analysis: Conducting the RSARSA Analysis: Conducting the RSA
Workshop setting
Review background reports, crash data, and design criteria
Systematically review design drawings and/or other information
Identify, prioritize, and mitigate safety issues
Risk AnalysisRisk Analysis
For each issue:– What potential exists for crashes?– What is the likelihood of crashes?– How severe are the crashes likely to be?
Crash potential? – What exposure exists
Likelihood of a crash?– What probability exists
How severe? – What consequences?
Risk = f (Exposure, Probability, Consequences)
RSA Process – Presentation of FindingsRSA Process – Presentation of Findings
Presentation of Findings: RSA Presentation and ReportPresentation of Findings: RSA Presentation and Report
Documents the results of the RSA
Identifies and prioritizes safety issues
May include suggestions for improvements
Benefits of an RSABenefits of an RSA
Consensus on the problems
Focus for project development teams
Looked at safety improvements that we might not have otherwise identified
Reality check on some design items
All alternatives and safety trade-offs are prioritized
Low cost improvements identified
Improved transportation safety for all users
Thank You – Any Questions?Thank You – Any Questions?
OR210 Scholls Ferry Rd: Cascade Ave to OR 217 SB Off-ramp RSA
OR210 Scholls Ferry Rd: Cascade Ave to OR 217 SB Off-ramp RSA
RSA ScheduleRSA Schedule
Time Meeting/Activity Location Participants
Tuesday, March 20
9:00am - 10:00am Start-Up Meeting Region 1 Flanders, CR337 RSA Team
10:00am – 11:00am Kick-off Meeting Region 1 Flanders, Room A/B RSA Team, Stakeholders
11:00am - 11:30am Travel
11:30am – 1:00pm Field Review OR217/Scholls Ferry Rd RSA Team
1:00pm – 1:30pm Lunch - Travel back to Flanders
1:30pm – 3:30pm RSA Team Meeting Region 1 Flanders, CR337 RSA Team
3:30pm - 4:00pm Travel
4:00pm - 5:30pm PM Peak Review OR217/Scholls Ferry Rd RSA Team
5:30pm - 730pm Dinner Break (together) RSA Team
7:30pm - 8:30pm Night/Darkness Review OR217/Scholls Ferry Rd RSA Team
Wednesday, March 21
7:00am – 8:00 a.m. Field Review OR217/Scholls Ferry Rd RSA Team
8:00am - 8:30am Travel
8:30am - 12:30pm RSA Team Meeting: Findings Region 1 Flanders, CR337 RSA Team
12:30pm - 1:30pm Lunch
1:30pm - 3:00pm RSA Findings Presentation Region 1 Flanders, Room A/B RSA Team, Stakeholders
OR210 Scholls Ferry Rd: Cascade Ave to OR 217 SB Off-ramp Crash GraphsOR210 Scholls Ferry Rd: Cascade Ave to OR 217 SB Off-ramp Crash Graphs
January 2006 – July 2011Peak 2009-2010
52% Rear-ends/SS-O44% Angle/Turn0 Pedestrian crashes
Peak hours 3pm-6pm
Crashes by Year
05
10152025303540
2006 2007 2008 2009 2010 2011
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Crashes by Collision Type
0
2040
60
80
ANGL HEAD REAR SS-M SS-O TURN PARK NCOL BACK PED FIX OTHNu
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OR210 Scholls Ferry Rd: Cascade Ave to OR 217 SB Off-ramp RSA Crash GraphsOR210 Scholls Ferry Rd: Cascade Ave to OR 217 SB Off-ramp RSA Crash Graphs
Crashes by Milepost/Roadway
0
10
20
30
40
50
60
70
80
9.03 9.04 9.05 9.06 9.07 9.08 9.09 9.12 9.13 9.14 9.15 9.17 9.19 9.20
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27% Dark crashes (Lit and Unlit)
Spikes at Cascade Ave (mp 9.06) and OR217 SB Off-ramp (mp 9.13)
Crashes by Light Conditions
0
20
40
60
80
100
120
Daw n Day Dark, Lighted Dark, Unlighted Dusk Unknow n
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Crashes by Milepost/Roadway
0
10
20
30
40
50
60
70
80
9.03 9.04 9.05 9.06 9.07 9.08 9.09 9.12 9.13 9.14 9.15 9.17 9.19 9.20
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TV Hwy at SW 185th – Road Safety AuditTV Hwy at SW 185th – Road Safety Audit