Can I suggest that he takes a look at the streets that have been closed to through traffic over recent years? By closing these streets, traffic has been concentrated in other areas, causing congestion. Why should some people have a traffic-free environment and leave others with more traffic, more congestion and more pollution?
Can I also suggest that if he is serious about traffic flow, he checks traffic light sequences. We have lots of sites where traffic lights change to red, stopping the flow of traffic when there is no other traffic in sight.
We also have lots of places where a green man appears when no pedestrians are in sight and no one has pushed a button, again stopping the flow of traffic.
A P Cox, Heath Close, Holgate, York.