Autonomous vehicle control for changing grip completion status in real-time to prevent unnecessary warning issuance

A control method for an automated driven vehicle, the control method comprising:

• a grip request step for requesting a driver to grip a steering wheel in response to determining that a current driving scene, determined based at least on information collected by sensors in the vehicle, corresponds to a predetermined driving scene;
• after the grip request step:
• a grip status judging step for judging based on input information from the driver on the steering wheel whether a steering wheel grip status is a one-handed grip status or a two-handed grip status;
• and
• a grip completion judging step for:
• in response to judging that the steering wheel grip status is the two-handed grip status, automatically judging that the steering wheel grip status is a grip completion status where the gripping of the steering wheel is considered finished;
• and
• in response to judging that the steering wheel grip status is the one-handed grip status, further judging at a time point later than when the grip request step was performed, whether the predetermined driving scene corresponds to a first type where the one-handed grip status would be sufficient for the grip completion status or corresponds to a second type where the two-hand grip status would be required for the grip completion status;
• in response to judging that the predetermined driving scene corresponds to the first type, judging that the steering wheel grip status is the grip completion status;
• and
• in response to judging that the predetermined driving scene corresponds to the second type, issuing a warning.

A nontransitory recording medium provided with a computer program which, when executed, cause a computer to:

• request a driver to grip a steering wheel in response to determining that a current driving scene, determined based at least on information collected by sensors in the vehicle, corresponds to a predetermined driving scene;
• after the request has been made:
• judge based on input information from the driver on the steering wheel whether a steering wheel grip status is a one-handed grip status or a two-handed grip status;
• in response to judging that the steering wheel grip status is the two-handed grip status, automatically judge that the steering wheel grip status is a grip completion status where the gripping of the steering wheel is considered finished;
• and
• in response to judging that the steering wheel grip status is the one-handed grip status, further judge at a time point later than when the request was made, whether the predetermined driving scene corresponds to a first type where the one-handed grip status would be sufficient for the grip completion status or corresponds to a second type where the two-hand grip status would be required for the grip completion status
• in response to judging that the predetermined driving scene corresponds to the first type, judge that the steering wheel grip status is the grip completion status;
• and
• in response to judging that the predetermined driving scene corresponds to the second type, issue a warning.