Lane guidance display system, lane guidance display method, and lane guidance display program

A lane guidance display method comprising:

• acquiring, with a processor, a front image obtained by capturing an area ahead of a vehicle with a camera;
• identifying, with the processor, a recommended lane in which the vehicle should travel in the front image;
• causing, with the processor, a display to display the front image on which a guide line is superimposed, the guide line having a rear end point that indicates a position at which the vehicle is currently travelling as a rear-side end point and a front end point that indicates a position forward of the rear end point in the recommended lane as a front-side end point;
• successively updating, with the processor, the front image on which the guide line is superimposed;
• and
• generating, with the processor, the guide line such that a position of the front end point of the guide line in a vertical direction of the front image is kept constant on each updated front image.

A non-transitory storage medium storing a computer-executable lane guidance display program, the program comprising:

• instructions for acquiring a front image obtained by capturing an area ahead of a vehicle with camera;
• instructions for identifying a recommended lane in which the vehicle should travel in the front image;
• instructions for causing a display to display the front image on which a guide line is superimposed, the guide line having a rear end point that indicates a position at which the vehicle is currently travelling as a rear-side end point and a front end point that indicates a position forward of the rear end point in the recommended lane as a front-side end point;
• instructions for successively updating the front image on which the guide line is superimposed;
• and
• instructions for generating the guide line such that a position of the front end point in a vertical direction of the front image is kept constant on each updated front image.