tbtc
Veteran Member
The 158s are very suitable units for what they are used on such as the Edinburgh-Dunblanes which are around an hour end to end and share the 100mph E&G mainline for almost half their running distance, hence pasthing 90mph units is much easier than 75mph 156s, especially when late running
The all stops Dunblane service justifies 158s (I'm sure it'll be 170 run when the Falkirk High line is electrified), but bear in mind that 156s are doing routes like Manchester Airport - Manchester Piccadilly - Liverpool
However, using 158s on routes like Anniesland/ Whifflet/ Cumbernauld/ Wick beggars belief. Even a 156 would be overkill on the first three examples there (when routes like Middlesbrough - Newcastle have Pacers on them).