FIELD: checking facilities. SUBSTANCE: invention relates to device for operative checking of adhesion qualities of hard- surface roads under construction and in use and air fields, and it can be used in investigation of road accidents. Proposed device contains carrying housing, tire simulator, tire simulator displacement mode control device, main and additional loading mechanisms coupled with tire simulator and including flexible members in form of springs, and adhesion coefficient indicator. Novelty is that spring of additional loading mechanism is stationary secured on carrying housing by one and is connected by other free end to tire simulator displacement mode control device either directly or through tire simulator. EFFECT: simplified design, improved adaptability and accuracy of evaluation of adhesion qualities of hard-surface roads. 3 cl, 4 dwg
