Safety Performance Functions for Arkansas
The 2010 Highway Safety Manual (HSM) contains a number of safety performance functions, i.e., equations that predict the expected number of crashes on a roadway segment or intersection of the specified type. The HSM authors suggest that the various safety performance functions presented therein “be calibrated for application in each jurisdiction”. This document reports the methods and outcomes of calibrating the following rural types on the state system to the Arkansas crash database: two-lane segments, four-lane divided segments, intersections on two-lane roads, and intersections on four-lane divided roads. In order to better reflect a truly rural highway environment, the calibration was restricted to locations with speeds of 50 mph or more. For all four types, the actual numbers of crashes in the database were less than those predicted by the HSM equations.
- Record URL:
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Corporate Authors:
University of Arkansas
Department of Civil Engineering
4190 Bell Engineering
Fayetteville, AR United States 72701Arkansas Department of Transportation
Little Rock, AR United StatesFederal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC United States 20590 -
Authors:
- Gattis, J L
- Chimka, Justin
- Newton, James
- Evans, Andrew
- Publication Date: 2017-11
Language
- English
Media Info
- Media Type: Digital/other
- Edition: Final Report
- Features: Appendices; Figures; Photos; References; Tables;
- Pagination: 64p
Subject/Index Terms
- TRT Terms: Highway safety; Rural highways; Traffic crashes; Types of roads by number of lanes
- Identifier Terms: Highway Safety Manual; Safety Performance Functions
- Geographic Terms: Arkansas
- Subject Areas: Highways; Safety and Human Factors;
Filing Info
- Accession Number: 01731905
- Record Type: Publication
- Contract Numbers: TRC 15-03
- Files: TRIS, ATRI, STATEDOT
- Created Date: Feb 26 2020 9:18AM