Abstract
In order to obtain theoretical backing to prevent the injury accident, the possibility of collision at the time of passing through the intersection was theoretically obtained. The possibility of collision was derived as a function of the own vehicle speed, the crossing vehicle speed, the lateral distance between the road and the maximum deceleration. From the obtained theoretical equation, the following were derived as necessary to make the collision probability zero. Regarding the possibility of collision, as the vehicle speed increases, the possibility of collision at the front of the own vehicle increases proportionally. As the possibility of the side of the vehicle increases as the own vehicle speed increases, it is desirable to increase the speed in the latter half of passing through the intersection to escape promptly. It is important to keep lateral distance that cancels the possibility of two items above.
