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Addressing recommended replacement of certain components in Harmon Industries' "Electro Code 4"' and "Electro Code 4 Plus" intermediate signal units
Keywords: Signal and Train Control; symmetry distortion ; signal lighting ;
Addressed the Securement of Lift Rods on RoadRailer Trailers in order to Prevent the Highway Tandem Wheels on these Trailers from Falling to the Rails on Moving Trains
Keywords: highway tandem wheels
Safety concerns involving Model B1 relays, manufactured by General Railway Signal (GRS), between the years 1960 and 1985, and their potential to stick and remain in the energized position. ALSTOM Signaling,Inc., which has acquired GRS, estimates that app
Keywords: Signal and Train Control; GRS ;� relay failure; B1 relay