Safety impacts of differential speed limits on rural interstate highways

Garber, Nicholas J.; Miller, John S.; Yuan, Bo; Sun, Xin; Virginia Transportation Research Council

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Safety impacts of differential speed limits on rural interstate highways

2005-10-01
By Garber, Nicholas J. ; Miller, John S. ; Yuan, Bo ; ...

[PDF-959.10 KB]

English

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Creators:

Garber, Nicholas J. ; Miller, John S. ; Yuan, Bo ; Sun, Xin

Garber, Nicholas J. ; Miller, John S. ; Yuan, Bo ; Sun, Xin Less -
Corporate Creators:

Virginia Transportation Research Council
Corporate Contributors:

United States. Federal Highway Administration. Office of Safety
Subject/TRT Terms:

[+]

Rural Highways Speed Limits Speed Measurement Traffic Safety
Publication/ Report Number:

FHWA-HRT-05-042
Resource Type:

Tech Report
OCLC Number:

441952575
Contracting Officer:

Nedzesky, A. J.
Corporate Publisher:

Turner-Fairbank Highway Research Center
NTL Classification:

NTL-SAFETY AND SECURITY-Speed Limits;NTL-OPERATIONS AND TRAFFIC CONTROLS-Traffic Flow;NTL-SAFETY AND SECURITY-Highway Safety;
Abstract:

To compare the safety effects of a uniform speed limit (USL) for all vehicles as opposed to a differential speed limit (DSL) for cars and heavy trucks, detailed crash data, speed monitoring data, and traffic volumes were sought for rural interstate highways in 17 States for the period 1991 to 2000. Conventional statistical tests (analysis of variance, Tukey's test, and Dunnett's test) were used to study speed and crash rate changes in the four policy groups. A modified empirical Bayes formation was used to evaluate crash frequency changes without presuming a constant relationship between crashes and traffic volume.
Format:

PDF
Funding:

VRC-000S(007)
Collection(s):

Federal Highway Administration
Main Document Checksum:

[+]

urn:sha256:d703f37be59801c144d3908ab9bc21c69dd391cb7b3b918d8b9cfb732cfd70a2
Download URL:

https://rosap.ntl.bts.gov/view/dot/817/dot_817_DS1.pdf
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Safety impacts of differential speed limits on rural interstate highways

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