28-901. Maximum number in school bus; stops at school A. Except for the purpose of conducting drills under school rules and in the emergency evacuation or dispersal of pupils and school personnel, a person shall not operate a school bus on a public highway: 1. While carrying more passengers than can be properly seated. 2. While a person is standing in the school bus. B. In receiving or discharging children at the school, a person who drives a vehicle carrying children to and from school shall stop the vehicle on the side of the highway on which the school is located.
Arizona Legal Code