The effect of an advisory speed signal on motorway traffic speeds /

Bibliographic Details
Main Author:	Webb, P. J.
Corporate Author:	Transport and Road Research Laboratory. Traffic Engineering Department
Format:	Book
Language:	English
Published:	Crowthorne, Berkshire : Highway Traffic Division, Traffic Engineering Dept., Transport and Road Research Laboratory, [1980]
Series:	TRRL supplementary report. no. 615.
Subjects:	Speed limits > Great Britain. Traffic signs and signals > Great Britain.

Description
Physical Description:	5 pages, 3 unnumbered pages : illustrations ; 30 cm.
Bibliography:	Includes bibliographical references.
ISSN:	0305-1315 ;