That's sort of the elephant in the room, as far as I'm concerned: you don't construct schedules assuming the best possible circumstances and maximum speed. At

That's sort of the elephant in the room, as far as I'm concerned: you don't construct schedules assuming the best possible circumstances and maximum speed. At least for light rail, it's quite normal to have trains stop for a good few minutes in certain stations. If there are delays, I'm sure that time gets cut.