A railroad highway crossing signal electronic assembly for use on bi-directional tracks, where a control unit sends AC voltage to an approaching rail segment wherein a rectifier receives AV voltage and discharges DC voltage which is sent back to a relay which controls lights on a gate arm. There is also a separate high current DC output to tracks. When shorted, the high current DC output creates sparks to improve detection of a train.
Method of improving shunt detection on railroad tracks and railroad highway crossing signal electronic assembly
2015-07-14
Patent
Electronic Resource
English
IPC: | B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC |
A highway and electric car crossing over railroad tracks
Engineering Index Backfile | 1911
Railroad-Highway Grade Crossing Handbook
NTIS | 1978
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Railroad-highway grade crossing handbook
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