A method, a device, and a computer program product wherein the further profile of a test route of a transportation vehicle is determined during a test run. Both the loads which are already applied to the transportation vehicle as well as the loads which act on the transportation vehicle on successive sections of road are included in the determination of the further test route. The test route is tailored individually to the transportation vehicle and to a load target value which is attained therewith. The satisfaction of the load target value is ensured in that the test route is adapted at any time in accordance with the actual applications of load and the loads which are expected.