A loading dock apparatus remote control is provided. As the wing sections are folded forwardly to prepare the machine for transport, the gauge wheel assemblies are simultaneously swung around to the ends of the beams into outboard positions so that they extend generally forwardly from the beams when the beams are fully folded. The time interval between sending the frame and detecting it returning at the same port may be recorded and sent to an operator to provide information on the relative location of the loopback in the network.