Possibility of driver control for trackless trolley frogs was pointed out in article indexed in Engineering Index 1939 p 1221, from issue of Feb 9 1939, and advantage of this control was shown for layouts such as road forks, cross roads, and at stops; present article gives practical details of relay scheme and additional apparatus which would be required in driver's cab and at each line junction.
Driver control of trolleybus overhead
Transport World
Transport World ; 92 , n 2933
1942
2 pages
Article (Journal)
English
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