This paper proposes a novel technique to assist the emergency vehicles namely ambulance to cross the traffic
signal without any delay which arises due to the time taken by other vehicles to make a way for it. This is made possible
by surveillance of the traffic starting from approximately 100-300 meters away from the traffic signal. Once an
ambulance is detected, the signal is sent to the siren detector to identify whether ambulance is in an emergency state. The
flow of traffic is then controlled by the Node MCU module
