Car-based external airbag for bicyclist protection in side impacts
2022-01-1032
03/29/2022
- Event
- Content
- Cyclist injuries and fatalities are a world-wide concern and often a consequence of interaction with cars. The MICA2 Project (Modelling of Interactions between Cyclists and Automobiles) is aimed at protecting bicyclists from getting hit by a passing car. This study addresses the need for new passive safety systems through the development and testing of a novel external car airbag. The airbag was designed to add protection to the center side part of the car, in the B-pillar area, to protect the head of a bicyclist impacting a car in this area. Two methods were used to evaluate performance of the system. For full system tests, a Hybrid III 50th percentile male dummy was seated on a city bike and projected into the side of a car at either 30º, 60º or 90º to the car side. In addition, component tests an adult pedestrian headform was launched towards the roof rail or B-pillar structure of the car. We found the highest injury risk in a perpendicular (90 degree) impact between the bicycle and car. In oblique crashes the bicycle slid along the side of the car and that decreased the linear accelerations in the head, although the risk for brain injuries increased in the 60 degree tests. Glancing collisions (30 degree) resulted in low injury risk as there was no direct head impact. The airbag was very effective in reducing the HIC for the dummy or headform, by respectively more than 30 or 40 %, in the 90 degree impact cases.
- Citation
- Carroll, J., Enanger, M., Jeppsson, H., and Lubbe, N., "Car-based external airbag for bicyclist protection in side impacts," SAE Technical Paper 2022-01-1032, 2022, .