Orlando, Fla., uses traffic signals such as proved effective at street intersections.
Railroad grade crossings protected by three-color electric traffic signals
Am. City
American City ; 38 , n 6
1928
2 pages
5 Figs.
Article (Journal)
English
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Engineering Index Backfile | 1895
Engineering Index Backfile | 1895
|Engineering Index Backfile | 1895
|Warranting Traffic Signals on the Basis of Proximity of Railroad Grade Crossings
Transportation Research Record | 2007
|Warranting Traffic Signals on the Basis of Proximity of Railroad Grade Crossings
Online Contents | 2007
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