rbt
Senior Member
Also I'm a bit surprised all three doors were not specified with the wide width option. For BRT you want improved flow with a wide door.
I recall a Japanese study being done on door width (a few quick searches didn't turn it up). The conclusion showed that door width had little impact once wide enough for a single individual to get in/out. People have a tendency to go single file through the middle of the opening; and they have some vehicles with doors wide enough for 4 people at a time.
2 doors four persons wide has roughly half the capacity of 4 doors two persons wide in the wild.