Highway safety, design, and operations; freeway signing and related geometrics.
Subtitle: Hearings, Ninetieth Congress, second session.
Publisher: U.S. Govt. Print. Off.
Published: 1968
Place of publication: Washington
Language: eng
Number of pages: 661
Subjects: Traffic signs and signals -- United States.
Notes: Bibliography: p. 660-661.
"90-39."
Hearings held May 7-July 18, 1968.