A massage device has a platform, a motor assembly, a transmission assembly, a massage arm assembly and two massage disk assemblies. A pressure booster piston borders on a control chamber on one side and on a high-pressure chamber on the other. By using a quadratic curve fitting equation, a plurality of lane line being detected so as to establish a road geometry estimation model. The controller may further provide for the listing and searching of different sets of previously entered arm positions on a display device of the guide arm controller device, and selection of one of the previously entered sets of arm positions as a current set of arm positions, using an input interface. A network node is provided that has rotatably mounted rails for altering the direction of the trolley car’s movement.