Estimated and underreported parameters in report based vehicle-bicycle accident reconstructions have a significant influence
| Autor: | J. Vander Sloten, M.H. Woering, Bart Depreitere |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Percentile
Acceleration Human Factors and Ergonomics Angular velocity Kinematics Rotation Vehicle-bicycle collision 0502 economics and business Statistics Craniocerebral Trauma Humans 0501 psychology and cognitive sciences Safety Risk Reliability and Quality 050107 human factors Pedestrians Mathematics 050210 logistics & transportation Crank MADYMO 05 social sciences Head injury criterion Accidents Traffic Public Health Environmental and Occupational Health Collision Bicycling Biomechanical Phenomena Accident reconstruction |
| Zdroj: | Accident Analysis & Prevention. 150:105903 |
| ISSN: | 0001-4575 |
| DOI: | 10.1016/j.aap.2020.105903 |
| Popis: | This study aimed to reconstruct four real life vehicle-bicycle collisions and evaluates the reconstruction parameters that affect the outcome of head injuries in report based accident reconstructions. A computational model of a car was developed in the multibody software MADYMO (MAthematical DYnamic MOdeling) and was used together with a validated bicycle model and the MADYMO 50 percentile pedestrian model. The accidents were reconstructed through an optimal fit method, based on kinematic and medical information. After the reconstruction, a parametric study on cyclists' movement and accident conditions was performed on the different cases. The velocity of the car and the angle of impact were found to significantly affect the accident outcome. This was demonstrated in terms of head injury criteria such as the Head Injury Criterion (HIC), the peak linear and peak angular velocity and acceleration. It was shown that the severity of the injury increases exponentially with increasing collision velocities. Additionally, the bicycle's parameters; crank rotation, handlebar angle and seat position revealed a large heterogeneity in the results. The maximum alteration between the lowest and highest HIC-value found for a complete crank rotation was a 416 % difference. For a handlebar rotation up to 100° or seat height alteration of maximum 34 cm, this value was respectively 169 % and 294 %. These high percentages of change indicate the need for cycling phase information for case-specific vehicle-bicycle accident reconstructions. ispartof: ACCIDENT ANALYSIS AND PREVENTION vol:150 ispartof: location:England status: published |
| Databáze: | OpenAIRE |
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