Abstract: A road anti-dazzle device that is installed on a safety island to prevent car lights from stimulating drivers' eyes so as to avoid possible road accidents. The device includes a cylinder made of high-density polyethylene materials. The cylinder has a plurality of longitudinal adjacent curved faces that have turbulent functions to enhance the cylinder's resistance to wind pressure. The cylinder has an elongated slot on a bottom portion thereof. A bolt is passed through a securing disk and into the bottom end of the cylinder. The bolt passes out from the elongated slot so that a circumferential flange of the securing disk presses against the bottom portion of the cylinder. A long-handle spanner is used to extend into a through hole at an upper end of the cylinder to lock the bolt into a threaded hole in the ground. The cylinder is firmly positioned on the ground by the securing disk.