The following words and phrases when used in this chapter shall have the meanings given to them in this section unless the context clearly indicates otherwise:
"Shared-ride public transportation services." Demand-responsive transportation that is available to the general public, operates on a nonfixed route basis and charges a fare to all riders. For transportation to be included in this definition, the first fare-paying passengers to enter the public transportation vehicle must not refuse to share the vehicle with other passengers during a given trip. The term excludes exclusive-ride taxi service, charter and sightseeing services, nonpublic transportation, school bus and limousine services.
72 P.S. § 3761-901