Driving assistance apparatus, driving assistance method, and driving assistance program

A driving assistance method employing a control unit that provides a driver of a host vehicle with guidance relating to another vehicle located on the periphery of the host vehicle, wherein the control unit:

• determines, using a processor, whether or not the host vehicle is traveling on a restricted eligibility road including a lane that has a travel eligibility restriction;
• obtains at least one of information relating to a travel eligibility restriction of a host vehicle traveling lane and information relating to a travel eligibility restriction of an adjacent lane to the host vehicle traveling lane when the host vehicle is determined to be traveling on the restricted eligibility road;
• recognizes another vehicle traveling in the adjacent lane using a sensor or a camera;
• obtains information relating to a travel eligibility of the other vehicle;
• and
• determines whether or not to provide guidance relating to the other vehicle on the basis of the information relating to the travel eligibility of the other vehicle and at least one of the obtained information relating to the travel eligibility restriction of the host vehicle traveling lane and the obtained information relating to the travel eligibility restriction of the adjacent lane.

A non-transitory computer readable medium storing a driving assistance program employing that is configured to control a control unit that provides a driver of a host vehicle with guidance relating to another vehicle located on the periphery of the host vehicle, wherein the control unit is caused to function as:

• a road recognition unit that determines whether or not the host vehicle is traveling on a restricted eligibility road including a lane that has a travel eligibility restriction;
• an eligibility acquisition unit that obtains at least one of information relating to a travel eligibility restriction of a host vehicle traveling lane and information relating to a travel eligibility restriction of an adjacent lane to the host vehicle traveling lane when the host vehicle is determined to be traveling on the restricted eligibility road;
• an other vehicle recognition unit that recognizes another vehicle traveling in the adjacent lane;
• an other vehicle eligibility acquisition unit that obtains information relating to a travel eligibility of the other vehicle;
• and
• a guidance unit that determines whether or not to provide guidance relating to the other vehicle on the basis of the information relating to the travel eligibility of the other vehicle and at least one of the obtained information relating to the travel eligibility restriction of the host vehicle traveling lane and the obtained information relating to the travel eligibility restriction of the adjacent lane.