A system known as Automatic Train Protection, supplied by Westinghouse
Signals, is used extensively on railways in Queensland. The system continuously
monitors the operation of a train, and can intervene in train operation so that
the train cannot exceed its maximum speed limit, or cross a danger point.
The system comprises a track-mounted transponder, and locomotive-mounted
antenna, ID check tag, UHF transmitter, and control and monitoring electronics.
Upon activation by the passing locomotive, the trackside transponder updates the
locomotive data with information such as location, rail speed and rail gradient.
Niksar received formal responsibility for the manufacturing rights and
through life support of the Planar Antenna used in the Automatic Protection
system.
SYSTEM DESIGN AND INTEGRATION 
