On 2012\04\27 10:27, Neil Williams wrote:
Roland wrote:

They are both "public transport" which helps dissuade people from driving
their own cars into cities, have to find somewhere to park etc.

They do not have a congestion or environmental benefit in the city itself,
though.

London taxis do, because of the tight turning circle. If every taxi was
replaced by cars that had to do three-point turns instead of U-turns,
congestion would be worse. Witness the congestion caused by minicabs
doing three-point turns in Old Street at 2am on the weekend.