With the advances in wireless communication and mobile computing, a future infrastructure less self-organizing traffic information system, where vehicles can form a network for exchanging traffic information among themselves, will soon be realized. In an infrastructure less traffic information system, vehicles will act as mobile sensors and collect the traffic data as they travel. Smart phones are a great choice for traffic sensing devices as they are now equipped with a variety of sensors such as global positioning system (GPS) receiver, accelerometer, gyro- scope, camera, and microphone. Automatic accident detection notification methods and also sense the traffic of a location. These various sensors sense when an accident is about to occur and immediately notifies emergency situation. Among all sensors, GPS receiver was given prominence for traffic sensing though it consumes large amount of power and shortens the battery life. In this project, we explore a possibility of using other sensors used in smart phones along with GPS. This helps to provide information about the traffic as well as the accident occurred if any. Distribution of the work among various sensors may help this situation. so, we introduce a tilt sensor which is normally used in airlines to detect the accident and to sense the traffic.

Keywords : GPS (Global Positioning System), GSM (Global System for Mobile Communications), Tilt Sensor, PIC Microcontroller, Traffic Information System.