Novel human-machine interfaces for the management of user-vehicle transitions in automated driving

For automated vehicles operating at SAE Level 4 capability, control could feasibly be passed from machine to human and vice versa -regardless of whether minimal risk condition exists as a fallback solution. We propose two Human-Machine Interfaces (HMIs) to assist in the management of these transitions: 1) A 'Responsibility Panel' providing the necessary feedback for a user to understand who must undertake different driving related activities (look, brake, throttle, steer) and who might be liable if a fault arises (user or car company); 2) A 'Readiness to Drive' testing HMI that only allows a human to retake control when a certain level of competency is demonstrated. Future work should evaluate the effectiveness of our HMIs.