Virtual Digital Retarders System

This work presents a digital inhibitor system for vehicles speed control using Global Positioning System (GPS).In this work the vehicle will reduce its speed by applying the brake out of driver control, programmed coordination points will cause receiving a GPS signal using GPS receiver to an imbedded system, which appears on the LCD screen, to inform the driver that he has entered in the target area. It is found that this system may help in reducing  the huge number of accidents on roads, controlling the inappropriate behavior of reckless drivers, saving time and effort to police departments by decreasing the number of patrols (fixed and moving) spread on the roads. The GPS is used in this project because it’s fixed simply inside the automobile without need of operational cost, and because of the wide coverage for satellite system; the GPS reaches any point on the Earth without need for large numbers even huge numbers of workers without affording additional costs, so the money and manpower can be saved without abandoning the desired goals. This system has many advantages; it can be used in wide range and also can be fitted in any vehicle. Keywords: Road retarders, GPS, Automobile, Deceleration, Digital inhibitor, Virtual retarders.