Abstract
Number of accidents during riding electrically assisted bicycles has increased, especially by older adult cyclists. It's pointed out that they don't stop at intersections during riding them. So in this study, we investigated behavior and awareness by older adult cyclists, through 3 methods – video observation, route choice survey by GPS, and questionnaire survey, in order to know the reasons of running out or jumping the light at intersections. As the results, it was revealed that older adult cyclists didn't pay attention to the waiting behavior at intersections and the speed which are different from the ones by conventional bicycles, and they preferred to the routes where they could ride electrically assisted bicycles faster.