My experience of New York and Washington is that they are much further ahead and more clued up about disabled people's rights than in the UK.

Half the sidewalk space in Park Slope is taken up by huge baby carriages with high tech shocks, the other half with people muttering curses about the same.  The worst I've seen directed at the handicapped qua handicapped is some mild frustrated looks when there are people using the bus elevator system which takes several minutes to get one person on or off.