The conversion of four lane undivided urban roadways to three lane facilities
By: by Thomas M. Welch
Publisher: Office of Transportation Safety, Iowa Dept. of Transportation
Published: 1999
Place of publication: Ames, Iowa
Language: eng
Number of pages: 15
Subjects: Left-turn lanes; Roads; Interchanges and intersections
Description: In recent years, many traffic engineers have advocated converting four-lane undivided urban streets to three-lane 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.
Notes: "Prepared for the TRB/ITE Urban Street Symposium, June 28-30, 1999, Dallas, Texas."

"June 1999."

Includes bibliographical references (p. 15).

Also available via the Internet.