Intellectual Speed Control with GPS and Radar for Emergency Vehicle Pre-Emption

According to several statistics the majority of the Car accidents are caused by highspeedand disrespect of the inter-vehicles security distance. In spite of this, more than 60% of drivers do not comply with speed limits on urban roads or trunk roads. The worst situation is when a trunk road passes through a village. There, almost 80% of drivers break the speed limit. In order to give to drivers the means for controlling the speed of their cars, several constructors have developed various systems such as the speed limiter or regulator already present in some cars. In this field, research continues to give more effective systems, like speed regulator systems with GPS (Global Positioning System) which allows to adapt the car velocity to that authorized in its localization zone. In this paper we describe an Intelligent Cruise Control with GPS and Radar (ICCGR) that combine GPS and radar systems to adapt the vehicle speed to respect the speed limitation and to avoid running up against others vehicles. The system integrates a GPS subsystem which makes it possible to locate the car and to determine authorized speed in its zone of localization. The radar subsystem detects any obstacle In front of the vehicle and gives the optimal speed to avoid the most dangerous one. A traffic signal pre-emption system,and a related method for its use, using differential global positioning system measurements for accurate monitoring of the position , speed and direction of an emergency or service vehicle.