There seems to be two different usages developing for the term ‘enhanced TPWS’. In the recent thread about the various protection systems I thought the conclusion was that the cab equipment update to TPWS4, (the latest standard otherwise known as Mk4 TPWS - depending on manufacturer), was an MMI update as explained in recent posts, but Enhanced TPWS referred to changes to the trackside system, eg to allow Chiltern’s ATP switch off.
The point was also made that the update to the cab equipment was completely separate to any enhancement to the track equipment fit. So what is the cab update supposed to be called?
If anyone wants to refer to it, the discussion includes a link to a Rail Engineer article and starts here:
*used. ATP is no longer in use on the Chilterns. Is Chiltern stock now fully fitted with Enhanced TPWS?
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