A policy on design standards--interstate system
By: prepared by the AASHTO Highway Subcommittee on Design.
Publisher: AASHTO
Published: 1989
Place of publication: Washington, D.C. (444 N. Capitol St., N.W., Suite 225)
Language: eng
Subjects: Interstate Highway System -- Design and construction -- Standards.; Roads -- Design and construction -- Standards -- United States.
Notes: "December 1988."