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Experiment on a Collision of Bicycle with a Vehicle

Author(s): Myung-cheol Park

Slidedeck Presentation Only (no paper submitted):

1A - Park

Abstract:

BACKGROUND
In the case of a vehicle/bicycle collision traffic accidents, real impact test data are required to improve the reliability of the evaluation of the vehicle velocity, impact spot, etc., but detailed test data have not been opened to the public. In the vehicle-bicycle impact test, the parameters that include the behavior of the dummy and bicycle, and ground friction coefficient are measured. This study results will be used as objective data for the evaluation and simulation of the impact spot and vehicle velocity in the vehicle-bicycle accident.

AIMS
In vehicle/bicycle collision traffic accidents, actual shock experiment materials are needed for a more reliable appraisal of the vehicle shock speed and shock points, among others. However, specific experiment materials are not available. This study aims to conduct vehicle/bicycle collision experiments in order to use the results as research materials for the appraisal.

METHODS
1. Male adult soft mannequins were used as dummies, which were 180 cm tall and weighed 63 kg with the head weighing 4.5 kg. A battered old passenger car was used as the vehicle.
2. During the experiment, a dummy was boarded on a bicycle, while the vehicle with a speed of 40 km/h, bumped onto the side, rear, and rear side of the bicycle three times.
3. The collision was filmed with a high-speed camera, and MADYMO simulations were conducted.

RESULTS
In the experiment, a Hyundai Sonata bumped onto the side, rear, and rear side of the bicycle with a speed of 40 km/h.
1. The distance from the collision spot to the bicycle’s overturn area was 16.4 m, 15.2 m, and 17.0 m, respectively.
2. The distance from the collision spot to the the dummy’s overturn area was 14.2 m, 17.4 m and 26.6 m, respectively.
3. The bicycle’s rear wheel fork was deformed, the rear wheel rim was damaged, and the rear wheel was slightly twisted.

DISCUSSION
This experiment was conducted only three times, but offered the method of conducting a vehicle/bicycle collision experiment, as well as a method of making low-cost dummies.

CONCLUSIONS
The overturn distance of the bicycle and dummy, as well as the extent of the bicycle damage, which was the result of this vehicle/bicycle collision experiment, can be used to report actual traffic accidents.