"Colin McKenzie" wrote in message
...
Jack Taylor wrote:
...
GPS is only there to cope with short platforms
and to tell the train *which* doors to open.

Which begs the question:
Is it accurate enough to know if the driver mischievously or
carelessly stops with the _rear_ 7 cars in the platform?!

The obvious solution seems to be individual doors which check that there is
a platform adjacent before opening. The basic idea seems very easy to
implement, although a foolproof system which could never mistake the sides
of a bridge for a platform might be harder to implement, but in combination
with driver control it should be safe enough.

--
John Rowland - Spamtrapped
Transport Plans for the London Area, updated 2001
http://www.geocities.com/Athens/Acro...69/tpftla.html
A man's vehicle is a symbol of his manhood.
That's why my vehicle's the Piccadilly Line -
It's the size of a county and it comes every two and a half minutes