Are EDR Devices Undoubtedly Helpful in the Reconstruction of a Road Traffic Accident?

All over the world, vehicles introduced now into market are usually provided with EDRs (Event Data Recorders), intended to measure and record parameters that characterise vehicle motion in pre-, during-, post-accident phases. The facilitate description reconstruction of possible road accidents. They patterned on aircraft “black boxes” (flight recorders). Many them have simplified design, disregarding three (of six) vector components describe body solid. In paper presented, authors used simulation models built by themselves represent motor dynamics trajectory velocities based records obtained from two EDR types: “aircraft” one (EDR1) “simplified” (EDR2). Using a method, they examined impact said simplifications mentioned above quality for four typical manoeuvres traffic. calculation results input data adopted rep-resent medium-class passenger car shown may cause considerable errors. This particularly applies where significant changes took place roll pitch angles solid (to which was fixed) or were characterised absence symmetry manoeuvre constant sign angles.