System of colored lights for road-traffic control at Leeds is described; method of working; cost of installation; Manchester development briefly described.
Day colour light signals for road traffic
Modern Transport
Modern Transport ; 20 , n 497
1928
2 Figs.
Aufsatz (Zeitschrift)
Englisch
© Metadata Copyright Elsevier B. V. All rights reserved.
Colour light signals for road traffic
Engineering Index Backfile | 1928
Recognition of coloured road-traffic light signals
Engineering Index Backfile | 1965
|Engineering Index Backfile | 1930
Illuminated road traffic signals
Engineering Index Backfile | 1933
|Battery-operated colour-light signals
Engineering Index Backfile | 1933