Traffic signals
By: by F.V. Webster and B.M. Cobbe.
Contributors: Cobbe, B. M.; Road Research Laboratory.
Series: Road research technical paper ;; no. 56
Publisher: H.M.S.O.
Published: 1966
Place of publication: London
Language: eng
Number of pages: 111
Subjects: Electronic traffic controls
Notes: Includes bibliography and index.
At head of title: Road Research Laboratory.