The arrangement of the forklift's control rods, indicating instruments and switches is fixed relative to the position of the driver's seat. Various indicating instruments are arranged in front of the driver, and the control rods, switches and various control elements are arranged in other corresponding parts of the driver's cab for the convenience of the driver to watch and operate the vehicle. The fixed position of these devices is determined by the standard driver's body size parameters, The specific reference position is based on the physiological and psychological characteristics of human beings. From the viewpoint of system theory, the driver's sitting working area and the position and size of each component in the working space are made to make it convenient, labor-saving and safe for the driver to operate the steering wheel, control lever and switch when driving and unloading goods, so that the driver is in the best state in physiology, psychology, action and feeling<br>
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