SINRAT is a computer program for reconstruction of traffic accidents, one that constitutes a powerful tool in the calculation applicable to the investigation, reconstruction and analysis of the damage produced in traffic accidents. SINRAT is provided with an input data pre-processor that allows the introduction of all the factors involved in an accident like braking, acceleration and steering manoeuvres executed by drivers, road profile, etc. SINRAT includes a database where the technical features of about 7000 vehicles are found, so that when it is necessary to reconstruct an accident, you just have to indicate the make and model of the implicated vehicles. SINRAT incorporates a simulation model of the behaviour of vehicles using the bond graph technique. Each vehicle is considered as a three-dimensional body, linked to the wheels through the suspension system. The tyre-road contact is also modelled. The collision model used permits simulation of the behaviour of the vehicles before, during and after the collision. This collision takes into account also the stiffness of the car's body and its energy absorption during the collision. SINRAT incorporates a driver model that determines the steering manoeuvre so that the vehicle traces a prearranged trajectory. It incorporates also the possibility to introduce the real profile of the road when it refers to the raisings, ramps, transition curves, etc. Even more, it includes an algorithm for the automatic reconstruction of traffic accidents, which permits calculation of vehicle velocity from the data at the scene of the accident. Starting from these data, the program reconstructs the accident varying the collision velocities until it reproduces the point of collision as well as the final positions of all vehicles. Lastly, SINRAT possesses a graphic post-processor which permits the visualization of the movements of the vehicles and the visualization of variables in terms of x-y plots.


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    Title :

    A computational dynamical model for traffic accident reconstruction


    Contributors:
    Lozano, J.A. (author) / Vera, C. (author) / Felez, J. (author)

    Published in:

    Publication date :

    1998


    Size :

    15 Seiten, 14 Bilder, 16 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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