This is the operation of a vehicle where you are in control. In San Diego, law enforcement officers do not need to see you behind the wheel in order to lay charges. They can use circumstantial evidence, which is sufficient to cite and / or arrest you.
Driving is the controlled operation of a vehicle, which is usually a motor vehicle such as a truck, bus, or car. Although direct operation of a bicycle, a mounted animal (not including chariot operation) or — at least in the United Kingdom, the United States and Canada — a motorcycle is commonly called riding, such operators usually considered to be drivers by law since they are required to obey those rules of the road which apply to all drivers.