ADOT
Road Safety Assessment
Program
Presented to
NACOG Technical Subcommittee
December 4, 2013
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What is an RSA ?
A Road Safety Assessment is a formal examination of user safety
of a future or existing roadway by an independent, multidisciplinary team.
Proactive
• Field observation - day, night, peak, off-peak
• Multimodal - peds, bikes, ADA, transit, trucks, etc.
• Identify causes of driving errors
• Consider influence of adjacent facilities
• Focused on substantive safety
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RSA Process
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Road owner(s) submits request - http://www.azdot.gov/business/engineeringand-construction/traffic/traffic-safety/road-safety-assessments
Team is assembled
• RSA is conducted
• Formal Findings Report sent to owner(s)
• Owner(s) submits written implementation plan
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RSA Application
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4E emphasis
Mitigation measures address
crash "triggers"
Crash “Triggers”
Mitigation measures include:
• Engineering
• Education
• Enforcement
• Emergency Response
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Haddon Matrix
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Substantive Safety
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Emergency Response
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Holistic approach
RSA Findings:
• reflect consensus of review team
• consider confounding issues:
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Feasibility, economic efficiency, affordability, practicality, political/institutional
acceptability, legal compatibility, consistency, etc.
focus on road user interaction
address Human Factors and Human Behavior issues
address roadway environment factors
address observed conflicts and crash patterns
improve safety of all road users
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Risk Assessment
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Risk Assessment
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Risk Assessment
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RSA Findings
Infrastructure, user, and vehicle issues are addressed
Education
Enforcement
• Media PSA’s
• TSS, DD
• Classroom
• Spot Speed
• DUI Check Points
• Target Campaigns
4E
Countermeasures
Engineering
Emergency Response
• Geometric
• Operational
• Maintenance
• Communication
• Training
• Equipment
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RSA Report
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Documents the results of
the RSA
Identifies and prioritizes
safety issues
Includes suggestions for
improvements
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Response Letter
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Prepared by the road agency (with possible input from
designer)
for each safety issue, identifies what action will (or will not)
be taken with a brief explanation
Becomes part of the RSA record
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RSA Benefits
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Proactive
Holistic
Independent
Systematic
Low cost
Thorough
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Contact Information
For more information, contact:
Richard Weeks, PE, PTOE
RSA Program Manager
602-712-4382
rweeks@azdot.gov
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