Implementation of Smart Traffic Light Prototype Using MQTT Protocol For Emergency Vehicles

Traffic lights are a set of lights that can control and regulate traffic flow at road junctions and zebra cross. in its application, the traffic lights are set by giving a certain time in each direction of the road SO that road users will go in turns. In this research, the implementation of smart traffic light prototype, smart means the object is capable of autonomous computing and connected with other devices. Implementation utilizing the Message Queuing Telemetry Transport (MQTT) protocol as a communication protocol, so that when there is an emergency, the vehicle will get the green light signal priority. So it can reduce congestion constraints and go to the destination as quickly as possible. Based on this case, this research implemented the architecture or design of traffic light communication current based on an IoT network that aims to connect between traffic light devices at intersections so that devices can communicate through Wireless Sensor Network (WSN) network protocol. In this implementation, the GPS device will send location data to the cloud using MQTT protocol and then the data will be processed and forwarded by the cloud to the traffic light device also using MQTT protocol. So the traffic lights will turn into a green signal on the path that will be passed by the vehicle when the distance has entered the system area. The quality of internet connection will greatly affect data delivery time using the MQTT protocol. The results of a simple implementation of the traffic light prototype device showed that the system can transmit location data and produce a packet loss value of 0% with an average delay of 6.722 ms and average throughput of 16.36 kbps.