Abstract

Train sideswipe accidents happen when two trains are traveling next to each other in the same or opposite directions and their sides come into contact. In most cases the relative velocity between the trains is very low. In these accidents, standing passengers might lose their balance, fall and impact with objects in their surroundings. Also, in extreme cases seated passenger might be ejected from their seat and get injured by impacting hard objects like handles and edges. These falls are caused by the acceleration and jerk exerted on the passengers during the impact. The train Event Data Recorder (EDR) does not record the train’s acceleration during the collision, as common in vehicle’s EDR, but provides only velocity information that is sampled in very low rate. To determine acceleration and jerk, train’s velocity is extracted from the train Event Data Recorder (EDR) and is used to estimate their value in order for the purpose of evaluation of the severity of the accident. The analysis of actual data extracted from an EDR of a train, that was that was involved in sideswipe accident is presented and compared to current standards. The results indicate that a standing person in case might lose his balance and fall. This results was verified since the two conductors who were walking along the isle lost their balance, fell and were injured feel and injure.

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