In response to John Geall's comments suggesting it is not worth hounding motorists driving at 35mph in a 30mph zone (Letters, March 23), I'd ask whether Mr Geall is aware that, in the event of a collision with a vehicle, a child is 80 per cent more likely to be fatally injured by a car travelling at 40mph than a car travelling at 30mph.

Any increase in speed over and above the legal limit can't be acceptable when thought about in those terms.

Are the benefits of getting to your destination a few seconds earlier worth running that risk?

-Graham Howson, Portslade