Once again, HAMM was the first to recognize the sign of the times and to present a rubber-wheeled roller with all-wheel steering and all-wheel drive to the technical press. A prospectus from these days shows the prototype of the worldwide first construction machine with hydrostatic drive. From the very beginning, this new development proves to be successful on different major construction sites. For example, during the construction of the Rhine-Main-Danube canal, several machines of this type proof to be reliable.