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ADOTRoad Safety Assessment

ProgramPresented to

NACOG Technical SubcommitteeDecember 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, multi-disciplinary 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

• Road owner(s) submits request - http://www.azdot.gov/business/engineering-and-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"

Mitigation measures include:• Engineering• Education• Enforcement• Emergency Response

Crash “Triggers”

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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:

• 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• Media PSA’s

• TSS, DD• Classroom

Enforcement• Spot Speed

• DUI Check Points• Target Campaigns

Engineering• Geometric• Operational• Maintenance

Emergency Response• Communication

• Training• Equipment

4E Countermeasures

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RSA Report

• Documents the results of the RSA

• Identifies and prioritizes safety issues

• Includes suggestions for improvements

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Response Letter

• 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

• 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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