Road Safety Assessment Program: Identification to Solution Bahram - - PowerPoint PPT Presentation

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Arizona Department of Transportation

Road Safety Assessment Program:

Identification to Solution

Bahram Dariush,P.E.

SHSP/RSA Program Manager ADOT Traffic Safety Section

San Carlos Apache Tribe/White Mountain Apache Tribe Transportation Partnership Steering Committee Meeting August 14,2019

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What Is An RSA?

Road Safety Assessment

A formal safety performance review of an existing or future road or intersection by an independent, multi- disciplinary team.

• Proactive in nature
• Field observation - day, night, peak, off peak
• A formal examination
• Conducted by a multidisciplinary team
• Conducted by a team that is independent of design team
• Focused on road safety
• Conducted by a team that is adequately qualified, both

individually and as a team

• Multimodal - peds, bikes, ADA, transit, trucks

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RSA process:

• Identify the project or existing road to be assessed
• Select RSA team
• Conduct a start-up meeting to review project

information

• Perform field observations under various conditions
• Conduct RSA analysis and prepare report of findings
• Present RSA findings to Project Owner/Design Team
• Project Owner/Design Team prepare formal response
• Incorporate findings into the project when appropriate

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ADOT RSA Program

RSA Team member pool

• Law Enforcement
• Traffic Engineering
• Roadway Design
• Roadway Maintenance
• Risk Management
• Human Factors
• Emergency Medical

Services

• Pedestrian Safety
• Bicyclist Safety
• Accident

Reconstruction

• Transit
• Transportation Safety

Agency:

ADOT, FHWA, NFS, Tribal. Municipality, County, BIA, DHS, NPS

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RSA Process

• Road owner(s) submits request –

https://www.azdot.gov/business/tsmo/operational-and-traffic- safety/road-safety-assessments

• RSA 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

One Page to provide

• wner input and

concern. Includes:

• Reason for the RSA
• Crash Experience
• ADT(Average Daily

Traffic)

• Road Owner
• Future Development

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RSA Application Scoring

• Priority
• Higher scores first
• Fatal/Serious Injury – Consultant
• Minor injuries or safety concerns-

ADOT staff

• Outcome
• K/A crashes may make state or

HSIP funding eligible

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Internal RSA Application Scoring

Typical ADOT Timeline from Application:

• Field Review 3 months
• Final Report 5 months
• HSIP Project 3-5 years

Reasons:

• Scoping
• Competitive bidding
• Scheduling

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ADOT RSA Program

• Conduct 12 RSAs per year
• All stages: scoping, design, construction, existing
• Urban and rural
• City, county, state, tribal, and federal locations
• RSA annual report

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RSA Procedures

• Site visits
• Analysis
• Start-up meeting
• Presentation of findings

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(1) Start-up Meeting

• Introductions
• Exchange of information
• RSA process
• Schedule

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(1) Start-up Meeting

• Assessment site, including constraints,

challenges, or known issues

• RSA process
• Schedule

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(2) Field Review

• Observe road user characteristics.
• Observe surrounding land uses.
• Observe link points to the

adjacent transportation network.

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(2) Field Review

• Review Crash data
• RSA team in one

vehicle.

• Designate a driver

and secretary.

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(2) Field Review

• Drive the site
• Many times (day

and night)

• Drive all approaches
• Make all turns

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(2) Field Review

Look for:

• Sight distance obstructions
• Roadside hazards
• Driveway issues
• AND good practices

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• Observe conditions during:
• Peak and off-peak traffic periods
• Day and night conditions

(2) Field Review

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• Walk the site

(2) Field Review

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(3) RSA Analysis

• Workshop setting
• Review information and crash data
• Identify, prioritize, and mitigate safety issues
• Consider the 4 E’s

Engineering Enforcement Education Emergency response

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(4) Presentation of Findings: Preliminary Findings Meeting

• RSA team, road agency
• Discuss preliminary findings

and possible solutions

• Use results to write RSA report

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(4) Presentation of Findings: 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

• Part of the RSA record

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RSA Benefits

• Proactive
• Holistic
• Independent
• Systematic
• Low cost
• Thorough

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ADOT RSA Program RSA process benefits

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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RSA Findings

Infrastructure, user, and vehicle issues are addressed

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4E Emphasis

Mitigation measures include:

• Engineering Road Safety: Crash Factors

Make changes to the roadway

• Education

Educate all roadway users

• Enforcement

Enforce traffic laws

• Emergency Response

Emergency vehicles quickly

access, provide services Road Factors (28%) Vehicle Factors (8%) Human Factors (95%)

24% 67% 4%

4% 4%

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ADOT RSA Program RSA Progress

• First RSA 2006
• 123 RSA’s to date
• 28 County
• 25 Municipal
• 48 State
• 20 Tribal
• 2 NFS
• 1 RSA requests are underway
• 1 RSA request in the process

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ADOT RSA Program

RSA Progress

Tribal RSAs conducted

 BIA Route 2 Oraibi/Leupp Road  Ak-Chin Indian community  Colorado River Indian Tribes  BIA 18/Havasupai & Hualapai Tribe  Kaibab Paiute Tribe  Navajo Nation US 160  US 160 at Navajo Route 21, MP 343.43  Navajo Route 6, MP 36.2 – 36.5

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ADOT RSA Program

RSA Progress

 US 70, MP 294 to 298  US 70, San Carlos Apache Tribe  San Xavier Rd/Little Nogales Drive  San Xavier Road I-19 to J. Stock Road  BIA –IRR 15 at SR 86  SR 73, White Mountain Apache Tribe

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ADOT RSA Program

Resources

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Thank you!

Bahram Dariush, P.E. SHSP/RSA Program Manager 602-712-2332 Bdariush@azdot.gov