Traffic signals for high-speed roads /

Bibliographic Details
Main Author:	Webster, F. V.
Corporate Author:	Road Research Laboratory
Other Authors:	Ellson, P. B.
Format:	Book
Language:	English
Published:	London : H.M.S.O., 1965.
Series:	Road research technical paper ; no. 74.
Subjects:	Traffic signs and signals > Great Britain.

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