New current-collection problems have arisen in connection with development of modern trolley-bus system, resulting in several new devices, various types of construction and number of unusual installations; cost per mile for three types of tangent trolley-bus overhead, 100-ft. pole spacings.
Many factors affect cost of trolley bus overhead
Elec. Ry. Jl
Electric Railway Journal ; 75 , n 4
1931
4 pages
8 Figs.
Article (Journal)
English
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Designing trolley bus overhead system
Engineering Index Backfile | 1932
|Overhead construction for trolley bus
Engineering Index Backfile | 1929