| CPC B60W 50/14 (2013.01) [B60W 60/001 (2020.02); B60W 2050/146 (2013.01); B60W 2420/403 (2013.01); B60W 2520/00 (2013.01)] | 5 Claims |
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1. A driving support device installed in a vehicle, the vehicle comprising a camera, a speed sensor configured to detect a vehicle speed, and a display, the driving support device comprising a control circuit configured to:
i) execute autonomous driving in either a first mode in which a vehicle occupant is not required to hold a steering wheel, or a second mode in which the vehicle occupant is required to hold the steering wheel;
ii) determine whether the vehicle is operating in the first mode;
iii) acquire the vehicle speed from the speed sensor in a case where the vehicle is operating in the first mode;
iv) determine whether the acquired vehicle speed is equal to or less than a predetermined speed;
set a count upper limit to a first value in a case where the vehicle speed is less than the predetermined speed, and set the count upper limit to a second value in a case where the vehicle speed is equal to or greater than the predetermined speed, the first value being greater than the second value;
vi) acquire an image of the vehicle occupant captured by the camera;
vii) perform image recognizing process on the acquired image;
viii) determine whether the vehicle occupant is holding objects in both hands based on the processed image;
ix) increase a count by one in a case where the vehicle occupant is holding the objects in both hands;
x) determine whether the count exceeds the count upper limit; and
xi) display a message or a figure on the display to notify the vehicle occupant that the vehicle occupant should free both hands in a case where the count exceeds the count upper limit, wherein
in a case where the count does not exceed the count upper limit, the control circuit is configured to repeat the vi) to x) at a predetermined cycle until the count exceeds the count upper limit,
in a case where a road on which the vehicle is traveling is an expressway, the predetermined speed is 40 kilometers per hour,
in a case where a road on which the vehicle is traveling is a highway, the predetermined speed is 30 kilometers per hour, and
in a case where a road on which the vehicle is traveling is neither an expressway nor a highway, the predetermined speed is 20 kilometers per hour.
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