--- "Martin Underwood" wrote:


Because it's a road, and roads should be open to ALL traffic.


Hmmm... Roads should be open to ALL traffic, should they? Motorways are
roads. Should they be open to foot traffic? Fancy the thought of crowds of
pedestrians walking along the fast lane of the motorway?

Of course not. A road should only be open to the sort of traffic that is
appropriate for it. That's just common sense.