Median U-Turn Design As An Alternative Treatment For Left Turns At Signalized Intersections

Bared, Joe G.; Kaisar, Evangelos I.; United States. Federal Highway Administration

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Median U-Turn Design As An Alternative Treatment For Left Turns At Signalized Intersections

2002-02-01
By Bared, Joe G. ; Kaisar, Evangelos I.

[PDF-347.76 KB]

English

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Creators:

Bared, Joe G. ; Kaisar, Evangelos I.

Bared, Joe G. ; Kaisar, Evangelos I. Less -
Corporate Creators:

United States. Federal Highway Administration
Corporate Contributors:

Turner-Fairbank Highway Research Center
Subject/TRT Terms:

[+]

Left Turns Median Openings Signalized Intersections
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

United States. Federal Highway Administration
Abstract:

Many signalized intersections experience recurring congestion and safety problems. For certain flow patterns and high traffic volumes, innovative or non-conventional designs are possible cost effective solutions. A median u-turn treatment at a signalized intersection is evaluated for a four-lane highway intersecting another four-lane road. The u-turn design is compared to a conventional geometry with direct left turning flows. TRANSIT-7F is used to optimize the signal timing and CORSIM to estimate traffic flow performance without validation or recalibration of the default parameters. A significant reduction in travel time is noted for the design with median u-turn at high volumes and high left-turning proportion. A reduction in stop time ranges from 10 to 40 seconds per vehicle.
Format:

PDF
Collection(s):

Federal Highway Administration
Main Document Checksum:

[+]

urn:sha256:c74ca07ff854653d91c6af5ab5cae07f15d71a2794dcd69ac3dfeae35b9d035e
Download URL:

https://rosap.ntl.bts.gov/view/dot/41860/dot_41860_DS1.pdf
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Median U-Turn Design As An Alternative Treatment For Left Turns At Signalized Intersections

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