I thought that you were not allowed to board through the back door unless accessibility was an issue. Every bus that I have been on closes those back doors and does not let people enter that way. When people try to enter that way the bus driver yells at them...
The bus drivers will
sometimes open the back door (not put down the lift) when people with large strollers are at the front door and ask to enter at the rear.
People should
NEVER enter thru the rear door unless they have gotten OK to do so from the driver.
It is
very dangerous to enter thru the rear door without the driver's knowledge. Drivers have told us that they can't see the back door very well. The driver does have mirrors to view the area, but when people are getting into the bus thru the front door, their bodies block the driver's view. Also, as people get out of the bus, they sometimes hit/move the mirrors that help the driver see the back.
We saw one situation where the back door was still open after the driver had loaded my DD's wheelchair. The driver had gone back to the front to close the door and let other passengers in. A man with a large stroller started to send his young DD in the door, while he followed with the stroller. I told him not to come in because the driver had gone to shut it and the door was open because a wheelchair had just been loaded. He replied with an 'attitude', something about he
was going in that door and I had no right to tell him not to. As his DD got in, the door shut on her. My DH had run up to tell the driver (since the driver had not heard us), but DH was too late. The man got a talking to from the driver and a scared child, but luckily she was not hurt, just scared.
We have seen many situations of people trying to come into the back door, but this was the first time we saw a child get hit by the door.