Driving means operating a motor vehicle on a public road, and does not include operating a motor vehicle when the vehicle has pulled over to the side of, or off, an active roadway and has stopped in a location where it can safely remain stationary.
Personal wireless communications device means a device through which personal wireless services are transmitted, and a mobile telephone or other portable electronic communication device with which the user engages in a call or writes, sends, or reads a text message using at least one hand. Personal wireless communications device does not include a global navigation satellite system receiver used for positioning, emergency notification, or navigation purposes.
Text means to read from, or manually enter data into, a personal wireless communications device, including for the purpose of SMS texting, emailing, instant messaging, or any other form of electronic data retrieval or electronic data communication, and manually to enter, send, or retrieve a text message to communicate with another individual or device.
Text message means a text-based message, an instant message, an electronic message, and email, but does not include an emergency alert, traffic alert, weather alert, or a message relating to the operation or navigation of a motor vehicle.
23 C.F.R. §1300.24