rules are rules...

… create them, advertise them, advertise yourself through them, then you have to act by them…
I was in Kingston earlier in the week, waiting in the rain for a bus back to my hometown of Surbiton. A bus arrived, but the driver explained that he couldn't let me on because he had two buggies on, using up the 'wheelchair space'. I am used to this and usually accept the request, and wait for another bus. I had been at work for KCIL earlier in the day, and felt it time to test the situation…
I use the buses regularly in my wheelchair and so I knew my plan. I directed the driver to the sign in the bus prioritising wheelchairs (below).

He explained 'but the buggies are here…'
So, as I was grumpy (I admit), I asked for his registration number,
'what was that?'
'Could I take you registration number please?' 
I was acting as if I would then wright and complain.
He then went to talk to the parents.
The next moment, I saw the two mothers wheeling their prams off the bus. 
I apologised sincerely, to which the parents very willingly accepted, and I timidly boarded the bus, in their place.

I felt bad, and guilty. I have just accepted the bus driver's initial denial, on every other occasion. 
'there is nothing wrong, you are just playing by the rules' i told myself, consoling my misdemeanour.