7. Systems Approach: Crashes Caused by Various Factors Vehicle 12% Roadway 34% Driver 80% Human is weakest link in this system, so we must design around human needs.
9. RISK CATEGORY Prioritize Safety Concerns Qualitative Estimate of Risk Low Moderate High Extreme Frequent Occasional Infrequent Rare C D E F B C D E A B C D A A B C Crash Frequency Category SEVERITY
10.
11. RSAs & Project Stages Planning / Scoping Preliminary Design Detailed Design Pre-Opening More Major Issues Addressed by RSA Less Opportunity for Changes
48. RISK CATEGORY Prioritize Safety Concerns Qualitative Estimate of Risk Low Moderate High Extreme Frequent Occasional Infrequent Rare C D E F B C D E A B C D A A B C Crash Frequency Category SEVERITY
57. 7 Prepare formal response RSA Team Road Owner Responsibilities RSA Procedure 1 Identify project 2 Select RSA team 3 Conduct a start-up meeting 4 Perform field reviews under various conditions 5 Conduct audit analysis and prepare report of findings 6 Present RSA findings to Project Owner 7 Prepare formal response 8 Incorporate findings
58. Suggestion 1: Consider sidewalks along the project route to accommodate future pedestrian activity. Planning Division will recommend sidewalks be included within the scope of this project when submitted to Design Division. Suggestion 2: If R/W is available, add an acceleration on US 60 in the westbound direction for RT turning from Bowring Rd. This is not feasible for the following reasons: Any changes to the top of cut/toe of slope would affect the utility relocation which is currently under way. Also, the drive at Sta. 551+20 may conflict with accelerating vehicles. Action taken Step 7 Response Letter Reason for not taking action
59. 8 Incorporate findings into the project RSA Team Road Owner Responsibilities RSA Procedure 1 Identify project 2 Select RSA team 3 Conduct a start-up meeting 4 Perform field reviews under various conditions 5 Conduct audit analysis and prepare report of findings 6 Present RSA findings to Project Owner / 7 Prepare formal response 8 Incorporate findings into the project
60.
61. 1 Identify project 2 Select RSA team 3 Conduct start-up meeting 4 Perform field reviews 5 Conduct analysis and prepare report 6 Present findings to Project Owner 7 Prepare formal response 8 Incorporate findings Responsibilities RSA Team Design Team / Project Owner
Hinweis der Redaktion
What is a Road Safety Audit? A road safety audit (RSA) is a formal safety performance examination of an existing or future road or intersection by an independent, multidisciplinary team. RSAs are a step further than traditional safety reviews that are currently done.
It is also important to note that the RSA team may need to consider the safety performance of the project from the perspective of all road users. The graphic shows a passenger car, pedestrian, pedal cyclist, motorcyclist, and large truck. Participants may be able to name other possible road users, such as public safety vehicles (police or fire), maintenance vehicles, older drivers, etc. The RSA team examines connections to existing infrastructure beyond the project limits, and looks at the segment/intersection from the point of view of users entering and exiting it. For example, is signing adequate for drivers approaching from adjacent road segments (are approaching drivers correctly positioned for turn-only lanes, and is signing consistent with similar facilities upstream and downstream)? How do various project elements interact, especially combinations of minimum standards? For example, what are the implications of providing a minimum-radius curve on an approach to an intersection where the minimum stopping sight distance is provided? Can vehicles (especially trucks) safely brake? An RSA does not simply identify potential problems – it may also identify potential solutions. Some questionable elements may be unavoidable in a design, such as where there are constraints (geometric, fiscal, etc.) that limit the project. An RSA can identify possible mitigation measures to address these risks. For example, limited land availability may result in the need to incorporate a horizontal curve having a radius below the minimum design value for anticipated speeds. The RSA can identify potential measures to identify this hazard (appropriate signing) and induce lower approach speeds (narrower lanes or transverse rumble strips), which can be implemented at reasonable expense during construction.
RSAs can be done at any stage of a project’s life. For simplicity’s sake, we have grouped them into three categories: The Early State (Planning or early-design) RSA looks at a roadway before it is built, at the planning/feasibility stage or the design (preliminary or detailed design) stage. The earlier a pre-construction RSA is conducted, the more potential it has to identify potential safety issues before they cause collisions. Construction RSAs are work-zone audits to examine temporary traffic management plans associated with construction or other roadworks, and can also be conducted when construction is completed but before the roadway is opened to traffic. The post-construction or operational (existing road) RSA looks at a road that has been built and is operating.
Examples
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FHWA RSA Train-the-Trainer Course Part 2 (RSA Procedures)
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