Departmental standard.
Great Britain.Roads and Local Transport Directorate.
Great Britain.Highways and Traffic Directorate.
[London : Dept. of Transport],
1978-1991.
Title from cover.
Each issue has a distinctive title.
Some issues include amendments.
At head of title: Department of Transport, Roads and Local Transport Directorate, 1978-; Department of Transport, Highways and Traffic, -
Traffic engineering
Pedestrian crosswalks