Which of the following is NOT a requirement for license plates on vehicles?

The correct answer highlights that displaying a license plate on the front of a vehicle is not a requirement in Maine. Instead, Maine law mandates that vehicles must have a valid license plate displayed on the rear. This distinction is particularly important for vehicle compliance during inspections, as only the rear plate is necessary for identification and regulatory purposes.

Understanding that having a current and undamaged plate is crucial reinforces the need for vehicles to be compliant with registration laws. A current plate ensures that the vehicle has been properly registered and that any fees are up to date, while a license plate that is not damaged can be clearly read by law enforcement and other drivers. Displaying the plate only on the rear, rather than both front and rear, simplifies the requirement for vehicle owners in Maine.