"School bus driver" means a person operating a school bus who has a valid school bus driver permit as required under Sections 6-104 and 6-106.1 of this Code.
"Cellular radio telecommunication device" means a device capable of sending or receiving telephone communications without an access line for service and which requires the operator to dial numbers manually. It does not, however, include citizens band radios or citizens band radio hybrids.
"Possession of a school bus" means the period of time from which a bus driver takes possession until the school bus driver returns possession of the school bus, whether or not the school bus driver is operating the school bus.
"Using a cellular radio telecommunication device" means talking or listening to or dialing a cellular radio telecommunication device.
To "operate" means to have the vehicle in motion while it contains one or more passengers.
625 ILCS 5/12-813.1