Method and apparatus for detecting and signalling derailment...

Method and apparatus for detecting defective track wheels

Method and apparatus for detecting misaligned tracks

Method and apparatus for detecting railroad cars

Method and apparatus for detecting railway activity

Method and apparatus for detection of the occupied or free...

Method and apparatus for improving rail shunts

Method and apparatus for indicating the presence of a train...

Method and apparatus for inductively receiving cab signaling on

Method and apparatus for initializing an automated train control

Method and apparatus for keeping railway switches free from snow

Method and apparatus for railcar data acquisition and...

Method and apparatus for the automatic control of a guided vehic

Method and apparatus for the transmission of information...

Method and apparatus for transitioning diverse power sources to

Method and apparatus for transmitting signals to a...

Method and apparatus for uniform time warning of railroad...

Method and device for a smooth and timely deceleration or stop i

Method and device for controlling a train

Method and device for deactivating defective doors