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A Study of Fatality Risk and Head Dynamic Response of Cyclist and Pedestrian Based on Passenger Car Accident Data Analysis and Simulations

J. Nie ; G. B. Li ; Jikuang Yang (Institutionen för tillämpad mekanik, Fordonssäkerhet ; SAFER - Fordons- och Trafiksäkerhetscentrum )
Traffic Injury Prevention (1538-9588). Vol. 16 (2015), 1, p. 76-83.
[Artikel, refereegranskad vetenskaplig]

Objective: The current study aims to compare the fatality risk of pedestrians and cyclists in urban traffic through an analysis of real-world accident data in China. Methods: First, 438 cases, including 371 pedestrian cases and 67 cyclist cases, were selected as a sample from the accidents collected through an in-depth investigation of vehicle accidents in China. A statistical measurement of the fatality risk with respect to impact velocity was carried out using a logistic regression analysis. Furthermore, 21 pedestrian and 24 cyclist accidents were selected for reconstruction with the MADYMO program. A comparative analysis was conducted based on the results from accident analysis and simulations for the fatality risk and head dynamic response of pedestrians and cyclists. Results: The results indicate that the vehicle impact velocity has a significant relationship with the fatality risk of both pedestrians and cyclists. The fatality risks at 50km/h are more than twice as high as the risk at 40km/h and about 5times as high as that at 30km/h for both pedestrians and cyclists. Moreover, cyclists suffered slightly lower fatality risk compared to pedestrians. The corresponding vehicle impact velocity is 65.4km/h for pedestrian with a fatality risk of 50 percent, whereas for cyclists it is 67.6km/h. In addition, the head impact conditions between pedestrians and cyclists are different. Conclusions: These findings offer potential contributions for establishing a more reasonable speed limit for urban traffic in China and generating strategies for cyclists' and pedestrians' head protection.

Nyckelord: cyclist, fatality risk, pedestrian, head dynamic response, INJURY SEVERITY, VEHICLE IMPACT, RECONSTRUCTIONS, CRASHES

Denna post skapades 2014-11-19. Senast ändrad 2014-11-19.
CPL Pubid: 206044


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