Abstract
In this study, we focus on a four-wheel stand-up type vehicle because of its static stability, its compact size and its easiness to ride. We aim to enhance the safety of personal mobility vehicles (PMVs) by using driving support systems, for example, automatic braking and self-driving. However, a driver has a possibility to fall down due to driver’s behavior during acceleration or deceleration because the mass of a driver is comparatively larger than that of a PMV. Moreover, a driver’s behavior with driving assistance system is different from a driver’s behavior without driving assistance system. In this study, we carried out the numerical simulation to confirm the relation between deceleration and the behavior of the driver with intention and that without intention. As a result, it was found that, 1: COGP of the driver with intention is half of that without intention, 2: preliminary behavior for braking cannot suppress his COGP movement if the deceleration is too large.
