"Andrew P Smith" wrote in message
...

I agree with what you are saying but it would mean
clever engineering and the train stopping in exactly
the right place every time for the gap fillers to work properly.

Unless the gap fillers were fitted to the train, not the platform.

--
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