School activity bus

"School activity bus" means a bus designed to accommodate more than 15 passengers, including the operator, that is owned, operated, rented, or leased by a school district, county school, open-enrollment charter school, regional education service center, or shared services arrangement and that is used to transport public school students on a school-related activity trip, other than on routes to and from school. The term does not include a chartered bus, a bus operated by a mass transit authority, a school bus, or a multifunction school activity bus.