Automatic close-following warning sign at Ascot

Bibliografiska uppgifter
Huvudupphovsman:	Helliar-Symons, R. D.
Institutionell upphovsman:	Transport and Road Research Laboratory
Materialtyp:	Bok
Språk:	engelska
Publicerad:	Crowthorne, Berkshire Transport and Road Research Laboratory 1983.
Ämnen:	Electronic traffic controls > Evaluation. Traffic signs and signals > Great Britain. Traffic flow > Great Britain.