TPWS


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Related to TPWS: TPWD

TPWS

abbreviation for
(Railways) train protection warning system: a rail safety system fitted to track signals
References in periodicals archive ?
TPWS cost hundreds of millions of pounds, which is why it was not adopted earlier.
This includes various visual warnings if the permitted speed is exceeded at any time and, as with TPWS, the system takes over and stops the train if it is travelling too fast or does not have authority to proceed.
It is a superb achievement to have completed the installation of TPWS well in advance of the national deadline.
Ray Price,Arriva Trains Northern managing director, said: ``It is a superb achievement to have completed the installation of TPWS well in advance of the national deadline.
The two chairmen said the programme should not be halted, but added: "We remain concerned that the effectiveness of TPWS is least where the risk is greatest - ie on high-speed trains with braking capability falling well below the optimum.
A spokesman for Network Rail added: "There were two incidents at that signal which is fully protected by the TPWS.
Trackside equipment works in conjunction with the TPWS equipment fitted to the train, which will activate the braking system when an irregularity, such as a train passing a red signal, is detected.
TPWS is a welcome addition to the network across Wales.
TPWS would not remove public concerns about the 'possibility of further catastrophic accidents' said the report from the two men who chaired the public inquiries into the Southall and Paddington crashes.
Most of its 250 drivers have completed their classroom and practical training with TPWS.
But the HSE source said: "If Railtrack have problems fitting the TPWS, which is fairly straightforward, you ain't got a lot of hope with the much more advanced and complicated ATP.
Railtrack claims TPWS, which uses transmitters to automatically stop drivers passing red lights, would have prevented two thirds of the 643 train failures last year - and the London disaster.