Traffic control devices, visibility, and geometrics /

Bibliographic Details
Corporate Author:	National Research Council (U.S.). Transportation Research Board
Format:	Book
Language:	English
Published:	Washington : National Academy of Sciences, 1978.
Series:	Transportation research record ; 681.
Subjects:	Traffic signs and signals > Congresses. Visibility > Congresses. Roads > Design and construction > Congresses. Traffic safety > Congresses.

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