On road sections and similar areas, the proportion of fatal accidents where a bicycle is rear-ended by a car is an outstandingly high 5.3%, and about 70% of these occur at night. As a result, it is an urgent issue to plan and maintain a safe and comfortable traffic space for bicyclists at night. This can involve measures to improve visibility, such as installing taillights on bicycles, choosing the proper clothing, and installing road lighting and reflective materials. Although, many studies have been conducted on visibility of bicycle, few studies have conducted on the danger of overtaking maneuvers of cars toward bicycle at night. Therefore, this study analyzed the characteristics of overtaking maneuvers of cars toward bicyclists during the day time and at night time. As a result, significant differences were confirmed in the main effects of the time factor on both the driving speed of cars and the passing distance.