What is the purpose of the inspection sticker's color code in Maine?

The purpose of the inspection sticker's color code in Maine is to indicate the month and year of the next required inspection. Each color corresponds to a specific month, and when a vehicle passes its inspection, the sticker is affixed to the windshield to remind the vehicle owner of when the next inspection is due. This system helps ensure that vehicles remain compliant with safety and emissions standards by providing a clear visual cue about inspection status. By using this color-coded method, law enforcement and vehicle owners can easily and quickly determine whether a vehicle is up-to-date on its inspection.

The other options do not accurately reflect the function of the inspection sticker. For example, while different vehicle model years may be inspected, they are not represented by the sticker color. The condition of the tires and the signification of the inspection station are also not designated by the color code of the inspection sticker.