Driving assistance device, driving assistance method, and non-transitory computer-readable storage medium

A driving assistance method for a vehicle, wherein the driving assistance method is to be executed by a computer,

• wherein a display device extending in a predetermined direction is provided in a cabin of the vehicle, the display device having multiple display regions divided in an extension direction,
• the driving assistance method comprising:
• acquiring, on a merging lane that merges with a main lane, a position of the vehicle with respect to a merging start point where a lane change from the merging lane to the main lane becomes possible;
• and
• causing at least one of the multiple display regions to emit light based on the position of the vehicle with respect to the merging start point, such that as the position of the vehicle approaches the merging start point, the at least one display region that emits light shifts in the extension direction.

A non-transitory computer-readable storage medium, comprising a stored control program, the control program configured to cause a computer to execute a driving assistance method for a vehicle,

• wherein a display device extending in a predetermined direction is provided in a cabin of the vehicle, the display device having multiple display regions divided in an extension direction,
• the driving assistance method comprising:
• acquiring, on a merging lane that merges with a main lane, a position of the vehicle with respect to a merging start point where a lane change from the merging lane to the main lane becomes possible,
• causing at least one of the multiple display regions to emit light based on the position of the vehicle with respect to the merging start point, such that as the position of the vehicle approaches the merging start point, the at least one display region that emits light shifts in the extension direction.