Correlation "impact velocity-specific pedestrian injuries" for reconstruction of pedestrian accidents / Korrelation "Aufprallgeschwindigkeit-spezifische Fußgängerverletzungen" zu Zwecken der Rekonstruktion bei Fußgängerverletzungen

Correct estimation of impact velocity into human body during "vehicle-pedestrian" traffic accident is one of the corner stones for succesfull reconstruction of these kinds of traffic accidents. Various methods are usable for... [ view full abstract ]

Correct estimation of impact velocity into human body during "vehicle-pedestrian" traffic accident is one of the corner stones for succesfull reconstruction of these kinds of traffic accidents. Various methods are usable for this task - throwing distance of pedestrian body, braking marks evaluation, videoanalysis of CCTV or onboard cameras, etc. One of promising methods that were not sufficiently utilized (from various reasons) until present is to use occurence of specific injuries suffered by pedestrian to obrain the interval of impact velocity. If the cut-off values of impact velocities when these inuries occur are determined, this method can be then used in conjuction with other forensic methods to determine correct and technically acceptable interval of impact velocity.

The presented research is based on dataset of reconstructed traffic accidents between pedestrian and passenger vehicles. Core of this dataset was presented at EVU 2016 conference. This core dataset was updated and number of... [ view full abstract ]

The presented research is based on dataset of reconstructed traffic accidents between pedestrian and passenger vehicles. Core of this dataset was presented at EVU 2016 conference. This core dataset was updated and number of relevant cases increased, wherein boundary conditions presented at EVU 2016 still apply. These boundary conditions are defined to narrow variability present in pedestrian accidents. Thus cases with following features were included for research purposes:

1. Pedestrians from adult population in erect posture.
2. Front part of impacting vehicle with shape of classic passenger car (wedge, pontoon, trapezoid).
3. Full overlap between car and pedestrian.
4. Impact velocity was obtained in sufficiently accurate way by using methods other than pedestrian injuries.
5. No secondary contact by second vehicle.
6. Description of injuries must be available (autopsy results, medical reports, etc.)

This dataset of relevant cases was subsequently processed using logistic regression to identify correlation between specific injuries of pedestrian and impact velocity.