Drive assist apparatus for vehicle and drive assist system for vehicle

A drive assist apparatus for a vehicle, the drive assist apparatus comprising:

• one or more processors;
• one or more memories storing instructions that, when executed, cause the one or more processors to:
• calculate a risk degree of the vehicle on a surrounding vehicle based on one or both of a history of a behavior of the vehicle with respect to a section line dividing a traveling lane of the vehicle and a behavior of a driver who is driving the vehicle;
• and
• determine a corresponding light emission pattern based on the calculated risk degree;
• and
• a light source unit including a light source and configured to emit light toward surroundings of the vehicle with the determined light emission pattern.

A drive assist apparatus for a vehicle, the drive assist apparatus comprising:

• one or more processors;
• and
• one or more memories storing instructions that, when executed, cause the one or more processors to:
• calculate a risk degree of the vehicle on a surrounding vehicle based on one or both of a history of a behavior of the vehicle with respect to a section line dividing a traveling lane of the vehicle and a behavior of a driver who is driving the vehicle;
• and
• determine a corresponding light emission pattern of the vehicle based on the calculated risk degree of the vehicle;
• and
• a light source unit including a light source and configured to emit light toward surroundings of the vehicle with the determined light emission pattern of the vehicle,
• wherein the instructions are configured to cause the one or more processors further to:
• identify a light emission pattern of a light source unit provided in an oncoming moving body, the oncoming moving body moving with a velocity component in a direction opposite to a traveling direction of the vehicle, on an oncoming lane adjoining the traveling lane of the vehicle, the light emission pattern of the oncoming moving body being associated with a risk degree of the oncoming moving body on the vehicle and being calculated by the oncoming moving body;
• identify the risk degree for the oncoming moving body based on the identified light emission pattern;
• in response to the identified risk degree of the oncoming moving body being less than a first predetermined risk degree threshold, (i) determine that the oncoming moving body is an obstacle that likely to come into collision with the vehicle, and (ii) perform a preliminary collision avoidance control for suppressing a risk of the collision;
• and
• in response to the identified risk degree of the oncoming moving body being equal to higher than a second predetermined risk degree threshold, (i) determine that the vehicle is highly likely to come into collision with the obstacle, and (ii) perform an emergency collision avoidance control for avoiding the collision, the second predetermined risk degree threshold being equal to or higher than the first predetermined risk degree threshold.

A drive assist system for a vehicle, the drive assist system comprising:

• a first circuitry provided in an oncoming moving body that moves with a velocity component in a direction opposite to a traveling direction of the vehicle on an oncoming lane adjoining a traveling lane of the vehicle and configured to:
• calculate a risk degree of the oncoming moving body on a surrounding vehicle based on one or both of a history of a behavior of the oncoming moving body with respect to a section line dividing the oncoming lane and a behavior of a driver who is driving the oncoming moving body;
• and
• determine a corresponding light emission pattern of the oncoming moving body based on the calculated risk degree;
• and
• a light source unit provided in the oncoming moving body and configured to emit light toward surroundings of the oncoming moving body with the determined light emission pattern of the oncoming moving body;
• a second circuitry provided in the vehicle and configured to:
• identify the light emission pattern of the light source unit of the oncoming moving body;
• identify the risk degree for the oncoming moving body based on the identified light emission pattern of the oncoming moving body;
• in response to the identified risk degree of the oncoming moving body being less than a first predetermined risk degree threshold, (i) determine that the oncoming moving body is an obstacle that likely to come into collision with the vehicle, and (ii) perform a preliminary collision avoidance control for suppressing a risk of the collision;
• and
• in response to the identified risk degree of the oncoming moving body being higher than a second predetermined risk degree threshold, (i) determine that the vehicle is likely to collide with the obstacle, and (ii) perform an emergency collision avoidance control for avoiding the collision, the second predetermined risk degree threshold being equal to or higher than the first predetermined risk degree threshold.