Speed Limits Set Lower than Engineering Recommendations [Project Summary Report]

Donnell, Eric T.; Gayah, Vikash V.; Yu, Zhengyao; Li, Lingyu; DePrator, Anthony; Thomas D. Larson Pennsylvania Transportation Institute

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Speed Limits Set Lower than Engineering Recommendations [Project Summary Report]

2016-08-01
By Donnell, Eric T. ; Gayah, Vikash V. ; Yu, Zhengyao ; ...

[PDF-292.36 KB]

English

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Creators:

Donnell, Eric T. ; Gayah, Vikash V. ; Yu, Zhengyao ; Li, Lingyu ; DePrator, Anthony

Donnell, Eric T. ; Gayah, Vikash V. ; Yu, Zhengyao ; Li, Lingyu ; DePrator, Anthony Less -
Corporate Creators:

Thomas D. Larson Pennsylvania Transportation Institute
Corporate Contributors:

Montana. Dept. of Transportation. Research Programs ; United States. Federal Highway Administration

Montana. Dept. of Transportation. Research Programs ; United States. Federal Highway Administration Less -
Subject/TRT Terms:

[+]

Before And After Studies Compliance Crash Injuries Crash Rates Fatalities Highway Safety Operating Speed Speed Limits Traffic Law Enforcement Traffic Safety
Publication/ Report Number:

Project Summary Report: 8225-001
Resource Type:

Tech Report
Geographical Coverage:

Montana
Corporate Publisher:

Thomas D. Larson Pennsylvania Transportation Institute
Abstract:

The Montana Department of Transportation (MDT) generally ensures that posted speed limits are set in accordance with engineering recommendations, which means that speed limits are typically set such that they are about equal to the observed 85th-percentile operating speed. However, for a variety of reasons, including the presence of school zones, citizen requests, political pressure, and perceived safety issues, posted speed limits on several roadways in Montana have been reduced to values lower than those recommended for the facility by engineering guidelines. This study examined the safety and operational effects of posting speed limits lower than engineering recommendations.
Format:

PDF
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:a5520622974ecb2d8d7103305e7a3e328e41e063cfeef9e1cdf9f3c02c9b18c3
Download URL:

https://rosap.ntl.bts.gov/view/dot/31485/dot_31485_DS1.pdf
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Speed Limits Set Lower than Engineering Recommendations [Project Summary Report]

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