Calibrating Crash Modification Factors for Wyoming-Specific Conditions : Application of the Highway Safety Manual - Part D

Ahmed, Mohamed M.; Gaweesh, Sherif; Hossain, Md Julfiker; Sharmin, Sadia; Peel, Thomas; University of Wyoming. Dept. of Civil and Architectural Engineering; Wyoming Technology Transfer Center

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Calibrating Crash Modification Factors for Wyoming-Specific Conditions : Application of the Highway Safety Manual - Part D

2017-04-01
By Ahmed, Mohamed M. ; Gaweesh, Sherif ; Hossain, Md Julfiker ; ...

[PDF-1.83 MB]

English

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Details:

Creators:

Ahmed, Mohamed M. ; Gaweesh, Sherif ; Hossain, Md Julfiker ; Sharmin, Sadia ; Peel, Thomas

Ahmed, Mohamed M. ; Gaweesh, Sherif ; Hossain, Md Julfiker ; Sharmin, Sadia ; Peel, Thomas Less -
Corporate Creators:

University of Wyoming. Dept. of Civil and Architectural Engineering ; Wyoming Technology Transfer Center

University of Wyoming. Dept. of Civil and Architectural Engineering ; Wyoming Technology Transfer Center Less -
Corporate Contributors:

Wyoming. Dept. of Transportation
Subject/TRT Terms:

[+]

Accident Data Adding Turn Lanes Crash Modification Factors Effectiveness Geometric Segments Headlight Use Highway Factors In Accidents Highway Safety Highway Safety Manual Intersections Passing Lanes Rumble Strips Safety Shoulder Rumble Strips Signs Snow Fences Traffic Data Wyoming
Publication/ Report Number:

WY- 17/04F
Resource Type:

Tech Report
Geographical Coverage:

Wyoming ; United States

Wyoming ; United States Less -
Corporate Publisher:

Wyoming. Dept. of Transportation
Abstract:

Mohamed Ahmed, Ph.D., P.E.- orcid.org/0000-0002-1921-0724; Sherif Gaweesh, M.S. - orcid.org/0000-0001-7977-6378; Md Julfiker Hossain -orcid.org/0000-0001-7173-7040; Sadia Sharmin – orcid.org/0000-0003-0947-8345; Thomas Peel – orcid.org/ 0000-0002-5357-602 This study is considered a first step towards validating the applicability of the Highway Safety Manual (HSM) Part D to Wyoming conditions. The HSM Part D provides a quantitative measure of safety for various countermeasures known as crash modification factors (CMF). These CMFs are provided for four distinct groups of treatments; roadway segments (e.g., rumble strips, passing lanes, etc.), intersections (e.g., flashing yellow arrows), special facilities (e.g., Highway-rail crossings, and interchanges), and road networks. CMFs provided in the HSM Part D are calibrated based on data collected from a few states in the US, which may not represent the same safety efficacy of countermeasures implemented in Wyoming. The objectives of this study are (1) to validate the applicability of the HSM Part D to Wyoming conditions, (2) to calibrate CMFs for various countermeasures in Wyoming, and (3) to provide recommendations in terms of data requirements, how to mitigate data shortcoming, and applicability of alternative analytical methodologies to evaluate the safety effectiveness of specific countermeasures. Depending on data availability, various observational before-after and cross-sectional techniques were adopted in this study to calibrate CMFs for six countermeasures applied to roadway segments, intersections, and special facilities. The results indicated that the majority of these countermeasures are statistically significant in reducing crash frequencies and severity.
Format:

PDF
Funding:

RS03216
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:1442e3e7d98db55a8ca2e00462b090f85611a0cddd2f41981e01f438017e68de
Download URL:

https://rosap.ntl.bts.gov/view/dot/34748/dot_34748_DS1.pdf
File Type:

1704F_RS03216_Crash_Modification_Metadata.pdf

pdf

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