Methods and Practices for Setting Speed Limits: An Informational Report

Forbes, Gerry; Gardner, Teresa; McGee, Hugh W.; Srinivasan, Raghavan; United States. Federal Highway Administration. Office of Safety

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Methods and Practices for Setting Speed Limits: An Informational Report

2012-04-01
By Forbes, Gerry ; Gardner, Teresa ; McGee, Hugh W. ; ...

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English

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Details:

Creators:

Forbes, Gerry ; Gardner, Teresa ; McGee, Hugh W. ; Srinivasan, Raghavan

Forbes, Gerry ; Gardner, Teresa ; McGee, Hugh W. ; Srinivasan, Raghavan Less -
Corporate Creators:

United States. Federal Highway Administration. Office of Safety
Contributors:

Xu, Guan ; Allred, Craig ; Ferron, Eric ; Griffith, Michael S. ; Tierney, Lisa F.

Xu, Guan ; Allred, Craig ; Ferron, Eric ; Griffith, Michael S. ; Tierney, Lisa F. Less -
Corporate Contributors:

Institute of Transportation Engineers
Subject/TRT Terms:

[+]

Data Collection Speed Limit Enforcement Speed Limits Speed Measurement Speed Signs Speed Study Data Collection Statutory Speed Traffic Control Devices Traffic Signs
Publication/ Report Number:

FHWA-SA-12-004
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

United States. Federal Highway Administration. Office of Safety
Abstract:

This informational report describes four primary practices and methodologies that are used in establishing speed limits (engineering approach, expert systems, optimization, and injury minimization). It also reviews the basic legalities of speed limits and presents several case studies for setting speed limits on a variety of roads. Despite the general acceptance and wide-spread use of speed limits throughout the world, there has been no consensus among practitioners concerning the methods and techniques that should be used to select the most appropriate speed limit for a particular facility. At the current time, it appears unlikely that any consensus will be achieved in the near future. This leaves practitioners without definitive guidance on this important issue, and in search of information to assist them. This report provides the information necessary for practitioners to make informed decisions in selecting a method for setting speed limits in their jurisdiction. This report presents the procedures that highway agencies can and do use to set speed limits. As an informational report it provides a broad overview of the different speed limit setting methods that are available for use, but it makes no specific policy recommendations or suggestions. Special situations, such as advisory, school zone, and work zone speeds are discussed. Speed limit enforcement and reevaluation of speed limits are discussed briefly. The design speed for the roadway will not be discussed, except as it may relate to the setting of speed limits. This is because design speed is a characteristic of the roadway that is essentially "built-in" to the road, and is not easily modified.
Format:

PDF
Collection(s):

Federal Highway Administration
Main Document Checksum:

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urn:sha256:8fa0fa55d1ecf239cec683a3abed5a7b64ed780f68c9576a26184c8d9e45e3a5
Download URL:

https://rosap.ntl.bts.gov/view/dot/49482/dot_49482_DS1.pdf
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Methods and Practices for Setting Speed Limits: An Informational Report

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