This project presents the automated smart car. The main aim is to prevent accidents and provide comfort travelling. Fully automated vehicles are currently under research and development and will become reality in the near future. This car may not require driver to control the car. Here we use ultrasonic waves to detect the obstacles. When an obstacle is detected speed of car is automatically reduced. This car also detect the traffic signals and obeys the traffic rules. Embedded system technology is used to control the entire system of the car