I seldom drive a car, and I cycle rather more frequently. I am worried by the number of cyclists who seem oblivious to the regulations that apply to bicycles, and to the general good sense that needs to be applied by all road users. It is surprisingly common for example when policing events that require roads to be closed to have cyclist challenge the closure, even sometimes simply riding round the closure notices. Such road closures are usually a matter of public safety, be it cars, tractors, horses or bicycles.