US Patent 8485301 Operator monitoring system for a vehicle

A vehicle has an operator monitoring system that includes an operator sensor configured to sense whether the operator is in a proper operating position within the operator cab and a control module connected to the operator sensor wherein when the vehicle is running and the operator sensor senses that the operator is not in the proper operating position, the control module activates safety features to stop the truck, including any one or a combination of activating the main brake, activating the parking brake, and/or shifting the transmission to a different setting.