tpws การใช้

• The TPWS panel comprises two indicator lamps and a push switch.
• This system is referred to as TPWS OS ( Outer Signal ).
• Other upgrades would include AWS / TPWS and signalling.
• The units are not fitted with Train Protection & Warning System ( TPWS ).
• A derogation was issued in 2001 which exempted the class from mandatory TPWS installation.
• There is a TPWS panel located in each driving cab of a train or locomotive.
• Withdrawal of units started in 1999, after they were replaced by new TPWS equipment.
• Since the introduction of TPWS, provision of new SPAD indicators has become less common.
• The driver then has approximately 2 seconds to press the AWS / TPWS acknowledgement button.
• TPWS equipment was acquired and fitted.
• There is also a separate TPWS Temporary Isolation Switch which is not shown in the example photograph.
• TPWS has proved to be an effective system in the UK, and has prevented several significant collisions.
• Indication of the state of the TPWS is provided by a blue light mounted below the stop board.
• On passenger lines, AWS is now often supplemented by the Train Protection & Warning System ( TPWS ).
• If this fails the resultant TPWS application of brakes will stop the train before the point of conflict is reached.
• However on these occasions there are strict rules governing drivers'actions and train speed and the use of TPWS.
• TPWS has no ability to regulate speed after a train passes a signal at danger " with authority ".
• This shows a steady blue light when the TPWS is activated, and a flashing blue light when it is deactivated.
• During the summer of 2008 50044 " Exeter " was fitted with OTMR, and the TPWS fitted previously was commissioned.
• When this occurs the red " Brake demand " light will flash on the AWS / TPWS Driver machine interface.