  A Free access tool based on a pedestrian-vehicle collision model is
presented. The model permitted the qualitative and quantitative description of
the events whole dynamic by segments called pre-collision, collision, and post
collision. Furthermore, it enabled the determination of the magnitude of the
vehicles initial speed before the collision with a pedestrian and the location
of the point position of impact on the road where the accident occurred. The
models inputs are related to the evidence collected at the scene, which
provides a checklist platform for supporting investigators fieldwork.
Additionally, the pre-collision segment permitted the investigators to develop
an avoidability study that may contribute to road safety evaluation. The model
was validated, comparing the results statistically with experimental cases
developed with dummies, bodies, and reconstructed cases. It is shown that there
is no significant difference, thus verifying its functionality. The tool is
available as a mobile app in Spanish and English, allowing significant
affordability to investigators from some low and middle-income countries.
