Yes research has shown that 20mph zones influence speed in and around the zones lowering the average speed even if it isn't always enforced. (see Portsmouth pilot data)
It does work better when calming measures are put in tho those give drivers the hump
Yes research has shown that 20mph zones influence speed in and around the zones lowering the average speed even if it isn't always enforced. (see Portsmouth pilot data)
It does work better when calming measures are put in tho those give drivers the hump