Abstract

The article describes a comparison of two general methods of occupants safety estimation based on a numerical examples. The so-called direct method is mainly based on the HIC (Head Injury Criterion) of a crash test dummy in a vehicle with passive safety system while the indirect method uses a European standard approach to estimate impact severity level.

Highlights

  • The first automotive accident was registered in 1896 in Europe at speed equal to 6.4 km/h

  • According to European standard [4] occupant safety is estimated by acceleration severity index (ASI) and theoretical head impact velocity (THIV) parameters

  • The theoretical head impact velocity (THIV) is represented by a point that hits the surface of the hypothetical vehicle interior

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Summary

Introduction

The first automotive accident was registered in 1896 in Europe at speed equal to 6.4 km/h. Nowadays traffic accidents become a serious social problem. There are above 450 million drivers in Europe [1]. In 2017 there were 49 killed occupants per million citizens in EU. Reduction of the number of fatal accidents is possible due to the use of active and passive safety car systems and road safety devices.

Indirect method
Acceleration Severity Index
Theoretical Head Impact Velocity
Direct method
Head Injury Criteria
Concrete barrier
Modified GeoMetro vehicle
Hybrid III 50th dummy
Frontal crash tests
TB11 concrete barrier crash test
Conclusions
EN 1317-1 : Road restaint systems – Part 1
Full Text
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