Improving the traffic operations and safety of ramps and speed change lanes
Subtitle: a review of state design practices
By: prepared for Federal Highway Administration, Offices of Research & Development, Environmental Division.
Contributors: United States. Federal Highway Administration. Environmental Division.
Publisher: The Division; National Technical Information Service [distributor]
Published: 1980
Place of publication: Washington, D.C; Springfield, Va
Language: eng
Number of pages: 40
Subjects: Express highways -- United States.; Roads -- United States -- Interchanges and intersections.; Roads -- United States -- Design and construction.
Notes: Cover title.

"Interim report."

"September 1980."

"Report no. FHWA-RD-79-127."