"Offramp" wrote in message
...

The most dangerous TDBs are at Angel. They are at ground level.
People see the TDB; if it says Morden 1 mins, Morden 8 mins etc, then
people go mental trying to get to the platform in one minute.

At Balham, when the ground level board says a train is due in one minute,
it's often already gone!

Ian