"Mait001" wrote in message
...
an anti-clockwise
one-way system is superior (because drivers have better visibility when
curving to the left).

There might be better visibility once in the square, curving to the left,
but
surely with traffic going clockwise, entry TO the roundabout, square or
whatever is much easier than if the traffic were coming from the left,
since
visibility is better to the entering driver, sitting on the right, if
traffic
is also coming from the right.

This is exactly right. Having driven my UK car(s) extensively
in Europe for the last three years, by far the hardest thing to do
in such a car is filtering right out of a minor road into a major
one. It's OK if you come to a stop at 90 degrees, but if the road
is wide enough so that you stop at a 60 degree angle your visability
of the traffic already on the road is close to zero without turning
your head into very akward position. Such a road design would
not last very long before it were changed back IMHO.

tim