Washington Revised Code Title 46. Motor Vehicles § 46.37.630. Private school buses

A private school bus is subject to the requirements set forth in the National Standards for School Buses established by the national safety council in effect at the time of the bus manufacture, as adopted by rule by reference by the chief of the Washington state patrol. A private school bus manufactured before 1980 must meet the minimum standards set forth in the 1980 edition of the National Standards for School Buses.