DocumentCode :
1038951
Title :
A Modern Cab Signaling and Train Control System for Railroads
Author :
Allison, L.R.
Author_Institution :
Union Switch and Signal Company, Swissvale, Pa.
Volume :
70
Issue :
1
fYear :
1951
fDate :
7/1/1951 12:00:00 AM
Firstpage :
232
Lastpage :
239
Abstract :
Increased safety of train operation is effected by the continuously controlled cab signal which may be augmented by means for applying the brakes automatically in case cab signal changes calling for a reduction in speed are ignored or pre-determined speed limits are exceeded. The engine-carried apparatus is inductively linked and selectively responsive to coded alternating current in the running rails, the frequency of coding determining the cab signal indication displayed and being dependent upon traffic conditions ahead. Absence of rail current or the presence of uncoded current establishes the most restrictive speed conditions.
Keywords :
Acoustical engineering; Automatic control; Coils; Control systems; Delay; Frequency; Rails; Railway safety; Velocity control;
fLanguage :
English
Journal_Title :
American Institute of Electrical Engineers, Transactions of the
Publisher :
ieee
ISSN :
0096-3860
Type :
jour
DOI :
10.1109/T-AIEE.1951.5060395
Filename :
5060395
Link To Document :
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