this paper presents a wireless sensor network based mostly monitoring of automobile parameters as a single unit. In this project the device called EDR is used to collect the details during the accident and it is transmitted to the police station and to the nearest vehicle. The sensors are connected with the vehicle to identify all the parameters like count sensor, steering angle, speed, crash, seat belt weared or not. All these details are stored in the EDR and after during investigation it can be retrieved. It acts like a black box. At the time of crash, all these details are transferred to the police station, hospital and to the nearest Police Station. In this project the sensors like Speed, accelerometer, vibration sensor, are used to identify the different status of the vehicle and it is stored in the internal memory and can be retrieved later on. Keywords-Event Data Recorder (EDR), PIC Microcontroller. I. INTRODUCTION It is observed that the majority of the accidents occur because of the driver's negligence of traffic and safety rules. Depending on the terrain, and other critical situations, speed restrictions may be imposed on drivers from time to time[1]. Therefore, a system monitoring the speed and different desired automobile parameters is put in within the automobile to warn the driver appropriately and also control if necessary. A device called EDR is used to collect the details during accident and it is transmitted to the Police Station. The sensors are connected to the micro controller of each of the vehicle. The output of the sensors are very low, it is amplified using signal conditioning board. The vibration sensor is used for the identification of crack and the values of sensor are transmitted to the Police Station. At the same time all the values are stored in the internal memory of the controller[2]. This device will act like a black box, which is safe during the accidents also. The IOT transmitter and receiver are used for the wireless communication. GPS sends location information to user mobile .Web server is used for fetching data in the PC, which is present in the police station or in hospital. The same information will be available in user's smart phone also.