A movingguiding apparatus has X- and Y-direction movable bodies guided and moved in intersecting directions, arranged at vertically different positions, and restrained in a vertical direction, respectively, and an X-Y movable body guided vertically on a surface plate and movable in moving directions of the X- and Y-direction movable bodies. A lens of the cover contains an electrically activatable material that prevents the transmission of visible light from entering into and reflecting out from one or more of the vehicle lights when the electrically activatable material is set to a light inhibiting state. Each segment also includes an opening in which a presser member can be located.