Commission hears witnesses called from roads using different types; signal engineers' experiences; cost of automatic train control and of automatic signals as reported in returns to questionnaire; locomotive enginemen testify; maintenance cost of automatic signals and train control taken from answers to I. C. C. questionnaire.
I.C.C. hearing on train control
Ry. Signaling
Railway Signaling ; 21 , n 4
1928
4 pages
Aufsatz (Zeitschrift)
Englisch
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