The paper presents the comparative analysis of contact roughness between friction surfaces of brake pads, which were fastened to the bicycle frame, and friction surfaces of the element of the wheel rim. The following temporary hypothesis was formulated: on the basis of the measured geometry of the surface irregularities of the elements, it is possible to determine which rim surface cooperated with the left and right brake pad. The proposed method of comparison of the roughness profiles of the frictional braking elements can be useful and appropriate for analyzing some types of vehicle accident reconstructions.
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