No doubt we'll start to see the arguments from spotters about the PSVAR/DDA regulations.
In my opinion, these regulations are the way forward to making all buses accessible for pushchairs, wheelchairs and the elderly. If the entrance to the bus is too tight, it's a struggle to get on and there will be more reasons.
I'd hate to have seen what buses would be like without these regulations to be honest.
RE: PSV Accessibility Regulations (DDA Regulations) - at a glance