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Impact of the Road Profile on Vehicle Deceleration

Keywords: longitudinal road profile , deceleration , braking force , weight transfer , traffic safety

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Abstract:

The article analyzes the impact of the longitudinal road profile on the efficiency of car braking estimated applying deceleration value. Different formulas are used for theoretical calculations, and therefore experimental brakes in different road slopes were performed to obtain the most accurate results. Deceleration, as one of the most important safety parameters, depends on the technical condition of the braking system, road conditions and structural and dynamic properties of the other car. Road alignments can significantly affect car manageability, because of weight transfer and extra track resistance, which may change the overall balance of the car and affect the nature of dynamic characteristics that may vary from certain critical values. The results of corrections to deceleration dependence on the road profile can be used for investigating traffic accidents, optimizing traffic control arrangements and implementing advanced systems for automotive active safety.

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