What is defined as a vehicle that is previously parked and then set in motion without the driver inside?

The term defined as a vehicle that is previously parked and then set in motion without the driver inside refers specifically to a "Driverless Moving Vehicle." This term captures the concept of a vehicle that has been left in a stationary position but then is moved without any human operator present inside, highlighting issues related to safety, control, and liability. In contexts such as traffic laws and regulations, this definition is important for understanding the responsibilities and potential dangers associated with vehicles operating without a driver.

Other terms like "Abandoned Vehicle," "Unauthorized Vehicle," and "Recreational Vehicle" do not accurately convey this specific situation. An “Abandoned Vehicle” typically pertains to vehicles left in a location for an extended time without intention to remove them. "Unauthorized Vehicle" usually refers to a vehicle that is parked in a place where it does not have permission to be. Meanwhile, "Recreational Vehicle" denotes a type of vehicle designed for leisure activities, which again is not focused specifically on the motion aspect or lack of a driver. Therefore, the accurate choice is the one describing a vehicle moving without a driver, which aligns perfectly with the provided scenario.