What must Class A and D stations also be licensed as?

Class A and D stations are required to be licensed as Class D because Class D stations represent a specific category that includes the necessary qualifications and requirements for operating as an inspection station in Maine. This licensing ensures that the facility complies with state regulations and standards, maintaining vehicle safety and environmental protocols during inspections.

Class D stations are vital for the inspection process since they specifically oversee the mechanical inspections of vehicles. By being licensed as Class D, Class A and D stations not only adhere to regulatory standards, but they also enable their inspectors to perform the necessary checks on vehicle safety features effectively.

The other choices do not align with the licensing requirements for Class A and D stations, as they pertain to different categories or do not fulfill the necessary functions stipulated by state law for inspection stations.