A support device for semi-trailers including a leg which has a receiving device, on its lower end. Data packets are thereby first transferred packet-switched through a packet-switching network to the second switch. A bit line contact forming area is defined above the area between the two gate conductor stacks. An accelerationdeceleration command at the present control loop is modified towards achieving an optimal curve speed, and is delivered to either a brake or acceleration module to automatically accelerate or decelerate the vehicle accordingly. The technique further includes checking the read sample of data for uncertainty andor robustness and determining the clustering approach to be used to cluster the received data based on the outcome of the checking. The cleaning module is selected from the group consisting of an ultrasonic unit, a scrubber, a fluid jet, an electrostatic cleaner, and combinations thereof.