(1) “Motor bus” and “motor carrier of passengers” mean those terms as defined in section 3 of the motor bus transportation act, 1982 PA 432, MCL 474.103.

    (2) “Nonpublic school” means that term as defined in section 5 of the revised school code, 1976 PA 451, MCL 380.5.

    (3) “Public school” means that term as defined in section 5 of the revised school code, 1976 PA 451, MCL 380.5.

    (4) “Rule” means a rule promulgated pursuant to the administrative procedures act of 1969, 1969 PA 306, MCL 24.201 to 24.328.

    (5) “School” means either a public school or a nonpublic school, or both.