Patent ID: 6696975
Filing Date: 2004-02-24
Classification: G08G

Abstract:
A movable body detecting/notifying system for allowing a detecting movable body to detect and report a detected movable body by using electromagnetic wave communication, comprising:means mountable to the detecting movable body for receiving information on a position of the detected movable body from a traffic regulating center, the traffic regulating center receiving information on positions of movable bodies within a predetermined range; means mountable to the detected movable body for transmitting a large wavelength electromagnetic wave easily diffractable by an obstruction and a small-wavelength electromagnetic wave not easily diffractable by an obstruction; and when said information on the position of the detected movable body indicates that said detected movable body is moving in a particular direction, said detecting movable body generates a caution signal upon reception of said large wavelength electromagnetic wave to produce a first notice upon reception of small-wavelength electromagnetic wave when the detected movable body is hidden by an obstruction, or a second notice upon reception of said small-wavelength electromagnetic wave when the detected movable body appears from behind the obstruction.