Currently there is extremely scarce data for estimation of impact velocity of road vehicles into pedestrian body based on injuries suffered by pedestrians. Past research approaches often led to incoclusive results particulary in the area of long bones fractures in the lower extremities. However there were some indications that amputations/partial amputations of pedestrian body parts were indications of high impact velocity (≥80 km/h) and finally in 2000 Karger et al. (Karger, B., Teige, K., Buhren, W., DuChesne, A.: Relationship between impact velocity and injuries in fatal pedestrian – car collisions. Int J Legal M (2000) 113: 84-88) found that there is correlation between impact velocity and 4 injuries (aortic rupture, inguinal skin rupture, spinal fracture and dismemberment).

Thus submitted paper presents results of follow-up preliminary study (limited by number of usable cases) which main goal was to re-explore these „impact velocity – injury incidence“ relationships. The main questions to answer were to confirm that these quantitative impact velocity indicators are still valid and how are these relationships influenced by improvements of agressivity of vehicle front parts wrt. impacted human body and how it will be influenced by improved demographical composition (the study of Karger et al. had high number of “old age” pedestrians, i.e. aged ≥ 65).

To obtain compatibility with study by Karger et al. (as well as for decreasing number of variables influencing results) the submitted research was limited in number of suitable case by set of boundary conditions.

The results of the presented study confirmed conclusions from study of Karger et al. concerning incidence of observed inuries at certain impact velocity as well as cut-off values of impact velocities.

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