Safety Effectiveness of Intersection Left- and Right-Turn Lanes

United States. Federal Highway Administration. Office of Research, Development, and Technology

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Safety Effectiveness of Intersection Left- and Right-Turn Lanes

[PDF-667.76 KB]

English

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Details:

Corporate Creators:

United States. Federal Highway Administration. Office of Research, Development, and Technology
Corporate Contributors:

Turner-Fairbank Highway Research Center
Subject/TRT Terms:

[+]

Left-turn Lanes--United States Turning LanesRoads--Interchanges And Intersections--Safety Measures
Publication/ Report Number:

FHWA-RD-02-103
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

United States. Federal Highway Administration
Abstract:

This TechBrief summarizes a new report entitled "Safety Effectiveness of Intersection Left- and Right-Turn Lanes" (FHWA-RD-02-089). The report presents the results of research on the safety effectiveness of providing left- and right-turn lanes for at-grade intersections. The research began with a literature review. Researchers then identified and selected three types of sites for the study: improved or treatment sites, comparison sites, and reference sites. Extensive data were collected from these sites. The before study periods for the treatment sites ranged from 1 to 10 years, and the after study periods also ranged from 1 to 10 years. Tables are presented summarizing the safety effectiveness of installing left-turn lanes on the major-road approaches to rural and urban intersections, respectively. Another table presents comparable effectiveness estimates for right-turn lanes that are applicable to both rural and urban intersections.
Format:

PDF
Alternate URL:

http://www.fhwa.dot.gov/publications/research/safety/02103/02103techbrief.pdf ; http://www.fhwa.dot.gov/publications/research/safety/213/ ;
Collection(s):

Federal Highway Administration
Main Document Checksum:

[+]

urn:sha256:07ef2ae8758364e3bd595c7d3d0dffa995dad60660d0bbb3131ad4987ebf2575
Download URL:

https://rosap.ntl.bts.gov/view/dot/41541/dot_41541_DS1.pdf
File Type:

No Additional Files

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Safety Effectiveness of Intersection Left- and Right-Turn Lanes

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