Just wondering.
Can a driver of a late running train just 'open the throttle' and drive faster (taking safety, temporary speed checks, etc, etc) to try and make up some time enroute.
It seems these days that control will miss out stops to try and make up time, but can the driver just 'go faster' I wonder.
A number of train paths / diagrams are for class 150 trains with a maximum speed of 75 mph, but 165/1, 166 and 158s are all capable of 90 mph. This was notably helpful on making up time between Swindon and Chippenham (for example) in the past.
There are also train driving advice systems (not sure if
GWR▸ have them fitted) which will recommend power and coasting and braking points to drivers to help them keep to time and not waste energy / fuel by being early and then sitting in stations. Such systems will recommend "opening the throttle" a bit more where a train is running late.