(30 Apr 2016, 9:21 pm)Andreos1 wrote I thought that initially.
But the bus was on time - on its half hourly frequency. I am guessing a short notice replacement driver maybe?
The choice of stop is what got me.
There are a number of more suitable stops (that don't involve the crew van parking with hazards on) in the vicinity though.
Quite possible that the driver was late off from his previous journey and the spare started the journey, or that the driver concerned needed to be relieved from their duty. Quite a number of reasons for a changeover at any location, although the stop in question does seem strange.