On Sat, 18 Sep 2010 13:20:09 +0100, Roy Badami
wrote:

I'd always understood this was more a health and safety concern than a
revenue protection concern -- the driver doesn't have a good view of the
rear doors so I think the concern is that of the bus departing with
someone trapped by the closing doors.

Supposedly so. But London buses have door-brake interlock on the rear
doors, and you can see them well enough through the mirrors, both
interior and exterior. That could be improved by having some form of
CCTV on a modern bus.

Clearly it's not insurmountable though. e.g. they run double deckers
with two doors on the Park and Ride in Cambridge -- the rear doors have
hustle alarms somewhat like on a train to warn passengers they are
closing...

I'm wondering now - do London buses have hustle alarms?

Most of them do, I think, certainly recent ones.

Neil
--
Neil Williams in Milton Keynes, UK
To reply put my first name before the at.