A number plate is a metal or plastic plate attached to the front and back of motor vehicles, displaying the registration details of the vehicle. These details usually include the vehicle's registration number, which is unique to each vehicle, as well as the name of the issuing authority (usually a government agency) and any other relevant information such as the expiration date of the registration or special codes indicating the type of vehicle. The purpose of the number plate is to help identify vehicles on the road, facilitate law enforcement efforts, and ensure that all vehicles are properly registered and meet safety standards.