Steve Firth wrote:
John Rowland wrote:

Steve Firth wrote:
Doug wrote:

Road congestion is primarily caused by too many cars and if left to
its own devices would be self-limiting.

The experience within Birmingham, when the entire traffic light
system failed, shows that if it were truly lef to its own devices
that the traffic would flow better than it does at present.

Where "traffic" doesn't include pedestrians or cyclists...

And?

You were implying traffic lights serve no useful purpose... if they enable
pedestrians to avoid getting run over, they serve a purpose, even if the
motor vehicles move better without them.