... In recent years, the research activities in the Federal Republic of Germany in respect to road-surface characteristics have concentrated mainly on maximizing or minimizing single road-surface characteristics. Now the optimization of all road-surface properties as a whole has priority...

... is towed at normal highway speeds. The rig is designed to be used over a wide range of ambient temperature conditions as well as road surface types. The tire cavity temperatures are monitored and the tire inflation pressures are regulated through a slipring and rotary seal assembly. A quick-lift auxiliary...