Sir, – Various correspondents responding to Clare Moriarty’s well-argued piece about a growing culture of careless driving (June 29th) have sought to emphasise it is not just drivers who break red lights. Cyclists do too, we are reminded.As someone who walks, cycles and drives every day, I confess I do not always wait for the green man when perambulating, I have been known to transgress the red light when on two wheels, but there is a fundamental difference were I to disregard the norms in a motor vehicle. My very small, humble car weighs 1,080kg and can accelerate to 100km/h in 9.5 seconds. Were I to bump into someone while jaywalking, that would be rude. Were I to crash my bike into someone while breaking a red, we both would end up bruised. Were I to crash my car into someone, the risk of (their) death becomes probable. There is, of course, a simple solution – prioritise active transport in urban areas with segregated cycle lanes and an end to the ridiculous beg-button wait-periods for pedestrians.But while we are waiting, it would be good for us all to implement the precautionary principle logically and focus our attention on motorists. The impact of cars on human flesh is the overriding cause of serious injury and death on our roads. – Yours, etc,KEVIN HARGADEN,Maynooth,Co Kildare.