Diagram and information regarding new comprehensive coordinated automatic central system in downtown Boston; progressive control eliminates stopping period which is inherent in synchronized control; timing schedule shows average speed 15 m.p.h.; pedestrian periods have been provided at each intersection; three-color system.
Automatic traffic signal lights
Nation's Traffic
Nation's Traffic ; 2 , n 10 ; p 38-39
1928
2 pages
2 Figs.
Article (Journal)
English
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BOTTOM TRAFFIC SIGNAL LIGHTS CONTROLED WITH CROSSWALK TRAFFIC SIGNAL LIGHTS
European Patent Office | 2018
|BOTTOM TRAFFIC SIGNAL LIGHTS CONTROLED WITH CROSSWALK TRAFFIC SIGNAL LIGHTS
European Patent Office | 2018
|