The lane is 9 foot wide. Tractors just about fit through. Deliveries to the pub, etc

Banning vehicles from that lane wouldn’t work. You can’t make it one way, it already can only pass traffic in one direction at a time.

The question was

why can't every child cycle to school on a car free path way?

The answer you admit is that in some parts of the country there just isn’t the road ways to convert. You also point out quite correctly it’s often not necessary, but you still take umbridge with these facts.