Abstract
The conspicuity of the motorcycles put on the market in recent years is evaluated paying attention to the closing
collision, right turn collision and the rear-end collision. First report has shown that the relative arrangement of
headlights and position lights affects motorcycle conspicuity. In the second report, more detailed analysis of the
arrangement of position lights is conducted, and also analysis of the arrangement of headlights and stop lamps is
conducted. The relative arrangement of headlights and position lights and the light intensity of headlights in front of the
vehicle affect motorcycle conspicuity of the front. The height of stop lamps affects motorcycle conspicuity of the back.
