But if there was a SPAD, surely the train would have been tripped as trains
on that line have armed tripcocks. Do they not inspect them on a regular
basis?

They could have ordered restricted speed, were it not for the fact that the
dust on the platform could have caused various other problems.

"chunky munky" wrote in message
oups.com...
Visability was reduced in the tunnels following Rail Grinding work over
the weekend that meant Train Operators couldn't see the signals. There
is then the risk of a SPAD (passing a signal at danger/red) and the
possibilty of a collision with an obstruction - or a train.
The Peak Time number of trains in service are 4 on the Waterloo & City.