Automatic close-following warning sign : further trials /

Bibliographic Details

Main Author:	Helliar-Symons, R. D.
Corporate Author:	Transport and Road Research Laboratory
Other Authors:	Ray, S. D.
Format:	Book
Language:	English
Published:	Crowthorne, Berkshire : Transport and Road Research Laboratory, 1986.
Series:	Research report (Transport and Road Research Laboratory) ; no. 63.
Subjects:	Electronic traffic controls. Proximity detectors. Traffic signs and signals. Traffic safety.