Reverse parking helps you park in tight space. From the length, width, wheelbase, and minimum turning radius of your car, move the car like that. It is not an accurate simulation. It's not a game. You can move the car by dragging. The slider on the top rotates the car. The slider on the bottom moves the car with the minimum turning radius. The slider on the right moves the car back and forth. You can change the color with the icon at the top right. -> Color samples take color vision into consideration. You can change the car and road settings with the icon at the bottom right. -> Please move the body for the position of the tires (wheelbase). -> The minimum turning radius is the radius, not the diameter. You can return the car to its initial position with the icon at the upper left. See the support page for how to use it. It's in Japanese, but I think it's ok because it's an illustration. I hope this app helps someone.