Tracing cyclists
It’s very difficult to identify a cyclist in a road traffic situation. With no easily recognisable number plates, a cyclist can simply disappear into the traffic and you as a driver are left shaking your fist again. Even if you did want to report them for running a red light, for example, how would you go about it? Unless there is a police officer at the scene, the chances that an errant cyclist guilty of dangerous road-craft will go unpunished. But a number plate, even if that was a personalised number plate of some kind, would give both you as the witness (or victim) and the authorities the ability to trace the cyclist and hold them to account.