I wish I knew what the current rules and reasoning were.
It used to be that drivers wanted the people using wheeled conveyances to board first (even if they just came up) because their understanding of the ADA was that if a bus was too full for a wheelchair/
ECV user, it was now too full for others. So they wanted the people to come forward, get loaded, and then fill in with others.
Then it seemed to shift, where they wanted people inside the lines. Of course then the drivers can't see the people sitting until they are right up at the front of the line. I'm not sure what would happen then.
There was a shift, and then another shift, and I've lost track. I wish I knew the current reasoning and policy.
I dislike 100% the concept that a wheelchair/
scooter-using family should be split up, when no one else would be. We've often traveled with extended family, and that's a group of 8 (9, now). My aunt uses a cane but really should have been on a scooter, and it felt silly that we don't have to split up if she's using a cane, but we would have to split up if she caved into using the wheels.
That said, we're a group that doesn't have to be connected at the hip; we CAN split up if we want to. But we don't want to be forced to do it, especially just because of the method of transportation my aunt might use.
And THAT said, I can remember ONE instance of a scooter having any sort of impact on my bus trips. And the only negativity about it was that the bus driver didn't tell us "I'm keeping the doors closed and I'm walking around the outside of the bus to the back doors to offload a scooter"...she said nothing and then yelped at us when we started to move forward. Silly us, not knowing who was onboard the bus and what she was doing.
I'm not a person who is going to get huffy because someone using a scooter/wheelchair gets to get on in front of me. Given the joint problems on all sides of my family, I'm sure it's coming my way eventually anyway.