The Conversion of Four Lane Undivded Urban Roadways to Three Lane Facilities, 2007

(2007) The Conversion of Four Lane Undivded Urban Roadways to Three Lane Facilities, 2007. Iowa State University

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Abstract

In recent years, many traffic engineers have advocated converting four-lane undivided urban streets to threelane two-way left-turn facilities. A number of these conversions have been successfully implemented. Accident rates have decreased while corridor and intersection levels of service remained acceptable. This conversion concept is yet another viable alternative “tool” to place in our urban safety/congestion toolbox.

Item Type: Departmental Report
Keywords: Left-hand Lanes, Roads, Interchanges, Intersections, Traffic
Subjects: Transportation > Traffic safety
Transportation > Roads and highways
Transportation
ID Code: 5415
Deposited By: Margaret Barr
Deposited On: 01 Oct 2007
Last Modified: 01 Oct 2007
URI: http://publications.iowa.gov/id/eprint/5415

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