Some of the bus drivers on my route home from college would wait at a stop when they saw someone running, only to pull off when they reached about halfway down the bus. A bus I wanted to catch also left me behind while I was on crutches, after my friends had gotten on and asked him if he would wait the 30 seconds it would take me to get on. Also, an old woman on that bus screamed at my friends for asking the bus driver to wait, saying he had a schedule to keep to and then when she got off she chatted with him for about a minute before she finally got off. My friends were fuming and put in a complaint for me.
To counter this though, I always used to get the same bus driver in the morning on the way to college, and then the same one again if I had a free first thing and was going in two hours later - he would see me get off one bus and head over the road for the other and would wait for me so I always made his bus. I guess being a beacon of bright blonde hair will have helped that, but he was so lovely everyday for about a year that I slipped him a fiver on my last day.