Instructor's guide for traffic signal design training course.
[Washington, D.C.?] : U.S. Dept. of Transportation, Federal Highway Administration, 1985-
> Study and teaching.
Traffic engineering > Study and teaching > United States.
Traffic signs and signals > United States.
"HHI-22/2-85(2M)EW"--P.  of cover.
"December 15, 1984."
Cover title: Traffic signal design training course; instructor's guide.
1 v. (loose-leaf) :
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