Train stop
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Part of a railway signalling system, a train stop, trip stop or tripcock is a train protection device that automatically stops a train if it attempts to pass a signal when the signal aspect and operat
A signal with associated trip arm in the raised position (circled)
Train-mounted trip cock, located on the leading bogie of a Siemens EMU
Train stop of Berlin S-Bahn
Siemens Nexas
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The Siemens Nexas is a type of electric multiple unit manufactured by Siemens Transportation Systems for the suburban railway network of Melbourne, Australia between 2002 and 2005. The design of the t
Train stop
…or (in some applications) if it attempts to pass at an excessive speed. Basic operation Train-mounted trip cock, located on the leading bogie of a Siemens EMU The train stop system comprises two basic components. One is the trip arm mechanism, mounted on the ground adjacent to the rail, which essentially…
Refurbished Siemens Nexas 789M at Seaford station, January 2026
Refurbished interior
A Siemens Nexas train, operated by Connex Melbourne, at Mordialloc station, December 2005
A six-car Nexas set led by 710M, operated by Connex Melbourne between Craigieburn and Roxburgh Park, January 2009