强制转向的类型，用于在FTS系统中引导无人驾驶工业车辆以及在仓库中引导高架起重车辆。在这些系统中，车辆遵循位于地板上的导丝。不同的变体是单频和多频原理。

        Type of forced steering that is used for guiding driverless industrial trucks in FTS systems and for guiding high rack lift trucks in warehouses. In these system the truck follows a guide wire located in the floor. The different variants are the single-frequency and the multi-frequency principle.