This is Traffic Signal for Emergency Vehicles & VIP Vehicles IOT Project.
In this project, we are using Raspberry Pi with connected traffic lights surround the box this will be placed in a three-way Junction
This is the 3 way Junction, whenever the emergency vehicle comes we have 2 tags, incoming tag and outgoing tag, When incoming tag senses wherever the signal is the signal transition will be happening to the box and green light will on.
When green will stop is that means the vehicle is moved away.
In this project we are using RFID Tag, this is used to sense the RFID tag, whenever the ambulance sees the RFID tag, and this will give serial data to NodeMCU.
NodeMCU send data over MQTT protocol to Raspberry pi saying that Switch on the green light on the particular root till it senses another tag.
Check the below project output video, this is how emergency alerting is happening in the traffic signal.