A method includes determining vehicle driving parameters associated with a driving behavior of a vehicle while in an autonomous driving mode. A plurality of electronic control units (ECUs) is interconnected to a vehicle bus for communicating instructions from electromechanical contacts to actuators to control the driving behavior. The computing unit may receive a control signal from one of the ECUs. The computing unit lacks knowledge of whether the control signal a valid. The method further includes analyzing vehicle driving parameters associated with the driving behavior to determine whether the vehicle driving parameters satisfy a driving behavior criteria. Subsequent to determining that the vehicle driving parameters fails to satisfy the driving behavior criteria, the method includes generating a signal that causes the electromechanical contacts to disconnect from the vehicle bus and disable communication of instructions between the ECUs and the vehicle bus.