I thought you were governed by a timetable?
"When does this train get to Bristol Temple Meads driver?"
"We'll be there when I get there and not before, now git on the train and shuttit."
I run to a timetable, and as long as everything runs clear, I'll get there on time.
If i get stopped at a red signal for out of course working or delay, then I'll be late.
No chasing around or getting stressed involved.