An Analysis on the Causes of Head-on Collisions through Long-term Data Collection of Near Miss Incidents at Unsignalized Intersections

摘要

According to the latest Japanese collision statistics, head-on collisions are the second most frequent type of collision on all roads. Additionally, from the perspective of applying cooperative vehicle -highway technology, head-on collisions, to which it is difficult to provide standalone vehicle services, should be the first to consider. There are limits to employing existing countermeasures in reducing head-on collisions, and as the recognition becomes common that services to provide information just before a collision are more effective, research has been continued from last year on a feasible and easily diffusible approach for a head-on collision prevention support service for unsignalized intersections. As part of that research, this paper establishes hypotheses for the causes of head-on collisions and examines those hypotheses using collected data. Collecting near head-on collision data on actual roads during a long-term time frame has increased the amount of data and helped to improve the accuracy of the evaluation. This objective data regarding immediate pre -near miss incident circumstances will be used to clarify the factors of head-on collisions. Utilizing the collected data, an approach for a head-on collision prevention support service will also be presented.