Method for maintaining active control of an autonomous vehicle can involve confirming the active presence of a human in a semi-autonomous vehicle. The human's active physical control and monitoring of the semi-autonomous vehicle can be verified by detecting that a throttle pedal on the semi-autonomous vehicle is depressed relative to a non-actuated position. The vehicle can then continue semi-autonomously as long as the active physical control and monitoring by the human is confirmed. Once the throttle pedal is found to no longer be depressed, the vehicle can be returned to normal human control.