Roadside Safety Analysis Program (RSAP) Update (2022) / Chapter Skim
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1 INTRODUCTION This report describes the development of an update to the Roadside Safety Analysis Program (RSAP)
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2 many to be prevalent among a large number of drivers involved in crashes. With the recent trend in "cell phone driving" and "texting while driving," it has been suggested that inattentive driving is as serious a problem as impaired driving under the influence of alcohol and drugs.
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3 published by the Federal Highway Administration (FHWA) establishing the program [VE08]
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4 time and make difficult trade-offs between cost, safety and mobility. Modeling tools that enable highway engineers to explicitly evaluate the costs and benefits of highway design decisions are essential in making these trade-offs.
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5 computer program was needed. The resulting program, RSAP, was completed in 2003 and documented in NCHRP Report 492 by Mak and Sicking.
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6 • Reported Crashes Not Recorded into Database: Depending on the particular state, some reported crashes, especially minor single-vehicle crashes, may not be entered into the state computerized traffic crash database. Generally states do this to minimize the cost of maintaining the database.
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7 encroachment-based approach demands more detailed data which may be difficult to obtain, or, require more assumptions about the way crashes occur which may be difficult to validate. CRASH-DATA APPROACH Crash-data based approaches generally take advantage of police-level crash reports that are collected by all the states.
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