Ernst Leitz G.m.b.h.

Knut Heitman

Ludwig Leitz

The maximum braking or powering effect due to changing road conditions, preferably for the case of full braking of a rubber-tired vehicle is determined in the system of the present invention during normal driving conditions. In this system measurement apparatus known per se are used wherein 1. acceleration or deceleration and/or powering or braking torques, and simultaneously 2. the positive or negative slippages occuring from at least one powered or braked running member Are measured and compared with one another as a function of time over a predetermined period, and the characteristics obtained possibly following intermediate storage from this comparison are fed to a display system and/or, following comparison with other data relating to extant traffic conditions, are fed to a control or regulation system so as to act on the braking or powering system.

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Wetzlar, Germany

Knut Heitman