CJG wrote in message ...
In message , 3518+3227
writes
Presumably, in the morning peak, they think the passenger load would be
too much to bear.

But the evening peak it is? I don't understand that.


The point is as follows. It is considered unreasonable for passengers to have to walk *up* an escalator shaft, therefore an *up* escalator service must be maintained at all times whilst passengers are allowed to exit the station. It is not possible to have a station closed to exiting passengers as it is impossible to prevent people from leaving a train.

At Marylebone, in the morning peak, most passengers will be going down rather than up, therefore - with an up escalator service still having to be maintained - all these passengers will have to use the fixed staircase. Presumably it is considered that this volume of passengers using a narrow staircase would be unsafe.

In the evening peak, however, fewer people will be going downwards, and therefore there is less of a safety risk to people walking down the staircase. Meanwhile, the situation for people leaving the station would be pretty well no different to normal - one up escalator.

Hope this makes it a little clearer.