The license plate and decal numbers must match which document's numbers?

The license plate and decal numbers must match the registration certificate because this document serves as the official record of the vehicle's registration with the state. The registration certificate contains crucial identifying information about the vehicle, including the license plate number and the decal number. This matching process is essential for confirming that the vehicle is properly registered and that the plate and decal being displayed correspond to the specific vehicle identified in the state's records. Ensuring that these numbers match helps law enforcement and other authorities easily verify a vehicle's legal status on the road.

Other documents, such as the title document, may be relevant for ownership verification, the insurance card relates to coverage rather than registration, and the vehicle manual typically contains operational information and does not pertain to registration details.