Traffic congestion is one of the major problem in major cities due to increase in number of vehicles. This can be controlled by many methods and by implementing the modern technology. Ambulance clearance is also very important and stolen vehicle detection. In this paper the survey is done on many methods and technologies used to perform the objectives. The literature focuses on the technologies which are being used presently to control the congestion, easy passage of ambulance through the traffic and to detect the stolen vehicle. The technologies like ZigBee, green wave, IR sensor , Bluetooth, ultrasonic sensor, Internet of Things(IoT) are some the technologies on which the paper focuses.

Keywords : Traffic Congestion Control, Ambulance, Stolen Vehicles.