Temporary plates ensure that the vehicle is in compliance with local laws and regulations during the transition period. Temporary plates allow the new owner to legally drive the vehicle during this period while they complete the necessary paperwork and obtain permanent registration. When a person buys a car, there is often a transition period before permanent registration and license plates are issued. Temporary plates serve as a temporary form of registration and identification for a vehicle in various situations. A temporary plate for a car, also known as a temporary license plate or temporary registration, is a temporary document or physical plate that is affixed to a vehicle for a limited period.