An industrial truck, configured for driverless, autonomously-acting operation for a load to be transported, includes at least a control system configured to control and to steer the industrial truck, and an evaluation unit configured to generate a signal for stopping the industrial truck. A detector device configured to recognize persons and/or objects located in a route is connected to the control system. The control system is configured to check a protective field and/or a warning field of the detector device, and the protective field and/or the warning field is automatically switchable in dependence on a position of the industrial truck and/or detected obstacles in the route of the industrial truck.