19Furthermore, it is clear from the explanatory note to the CN relating to heading 8713 that the decisive criterion for classification under that heading is the special design of the vehicle to help disabled persons. Accordingly, that heading covers electrically-driven vehicles similar to ‘electric wheelchairs’ (‘Elektrorollstühle’), specifically designed for the transport of disabled persons and with characteristics such as, in particular, a maximum speed of 10 km/h (which may correspond to a fast walking pace), special features to alleviate the disability (for example, footrests for stabilising the legs) and steering and other controls (such as a joystick) which are easy to reach and manipulate and therefore are usually attached to one of the armrests.