Abstract: A system for assisting the traffic safety of vehicles for improving the visibility, including a camera monitoring the road of an oncoming lane of a vehicle making a right turn at an intersection; a display board placed at a position above the road leading up to the intersection in a manner visible to the driver of the vehicle; a control device for control so that the image of the road obtained by the camera is displayed on the display board, a near infra-red illumination unit for illuminating the road so as to enable an image of the road to be obtained by the camera and so as not to temporarily blind the drivers of the vehicles on the road, an image recognizing device for recognizing an object moving on the road approaching the intersection based on the image of the road obtained by the camera, a radar for emitting a radar wave to an object moving on the road approaching the intersection to obtain information on the position and speed of the moving object from the reflected wave, and a vehicle-mounted voice o

Abstract: A distance measuring device using markers and capable of accurately measuring distance irrespective of the distance to an object. An optical system converges light from markers affixed to an object on the light receiving surface of a light receiving section. The light receiving section generates an image signal by photoelectric conversion and outputs the generated signal. First marker image acquiring means acquires images of markers, and second marker image acquiring means also acquires images of markers. Selecting means selects the output of the first marker image acquiring means if the distance to the object is short, and selects the images acquired by the second marker image acquiring means if the distance to the object is large. Based on the distance between the marker images selected by the selecting means, computing means computes the distance to the object by trigonometry.