The following words and terms, when used in this chapter, have the following meanings unless the context clearly indicates otherwise:

Electric mass transit vehicle—An electrically propelled device designed and used for the transportation of 15 or more passengers for compensation, including subway cars, trolleys, and trackless trolleys.

Inspection—An inspection performed under the supervision of an inspector. Routine preventative and other maintenance procedures, by themselves, shall not constitute an inspection.

Inspector—A person designated by a mass transit operator to conduct an inspection.

Mass transit operator—A company, authority or any other transportation entity responsible for the operation and maintenance of electric mass transit vehicles.

Official inspection—A semiannual inspection performed under applicable provisions of law and Department regulations. An official inspection must include inspection of all safety items identified in this chapter.

Vehicle—An electric mass transit vehicle.