Damage assessment of pedestrians collided by high-velocity runaway vehicles
-Risk assessment between high-velocity runaway vehicle and pedestrian collision from statistical accident data analysis-

Yasufumi Sekine (Fukuyama University)

In collisions between high-velocity runaway vehicles and pedestrians, the velocity at which the accident occurs is an important factor that determines the extent of damage, such as injury degree of pedestrians. In this study, the author analyzed the relationship between vehicle velocity and fatal or serious rate of pedestrians from traffic accident statistical data analysis and examined to clarify the aggressiveness of high-velocity runaway vehicles toward pedestrians.

Rider Kinematics and Head Injury Evaluation in Full-Scale Car-to-Electric Scooter Crash Tests

Akihiro Kido･Takaaki Terashima･Ryunosuke Sakamoto･Kenshiro Kato (National Research Institute of Police Science)･Ryo Oga (Japan Safe Driving Center)

Our previous study revealed that electric scooter riders are at high risk of head injury in traffic accidents. In this study, we conducted full-scale crash tests in which a car collided with an electric scooter ridden by a crash test dummy. The rider’s kinematics, as well as the mechanism and severity of the resulting head injuries, were analyzed.

Effect of riding height of electric scooter on flying behavior of small-sized human body when colliding with a bonnet vehicle

Ryo Oga (Japan Safe Driving Center)

In this study, we study the form of encounter accidents in which a bonnet vehicle collides with the side of an electric scooter. The riding position of an electric kick scooter is not the sitting position of a bicycle, but is closer to the standing position of a pedestrian. Therefore, we compared the post-crash behavior of pedestrians and electric scooter riders. As a result, we found that standing on the step of an electric kick scooter affects the flying behavior of the human body. However, the subject is limited to the Hybrid-III AF05 equivalent, which reproduces a small physique.

Development of a Flexible Head Protection Cap for Cyclists (Concept Model)

Atsuhiro Konosu (JARI)

Since the shape of the current bicycle head protector does not change along the head, it causes discomfort when wearing it and low storability, which is one of the factors that reduces the wearing rate. Therefore, we initiated to develop a bicycle head protection cap that has both flexibility and head protection properties. This paper introduces a concept model of it.