The density-based traffic light system with ambulance clearance presented in this project offers an innovative solution to address urban traffic congestion and emergency vehicle clearance challenges. The system utilizes 8 IR sensors to detect vehicle presence and determine traffic density. A PIC microcontroller processes sensor data and controls 12 LEDs representing traffic lights. Based on the traffic density, the system dynamically adjusts traffic light signals to optimize traffic flow. Additionally, the system includes an ambulance clearance mode enabled by RF communication. When an ambulance approaches, it sends a signal to the system, prompting the microcontroller to override traffic light settings and grant clearance for the ambulance to pass through safely. Once the ambulance has cleared the area, the system resumes normal traffic light operation based on the prevailing traffic density. This system offers a cost-effective and efficient solution for managing traffic flow in urban areas, enhancing road safety, and providing timely clearance for emergency vehicles.

   

The main objective of this project is:

1. Automatic traffic lights control.
2. Traffic density can be known by using IR sensors.
3. Three levels to indicate Traffic density.
4. Ambulance based automatic traffic light control.
5. Using RF technology and selection switch to indicate the direction of ambulance.
6. Using PIC Microcontroller to achieve this task.

  The major building blocks of this project are:

1. Regulated power supply.
2. IR Sensor.
3. RF transmitter and receiver.
4. Micro controller.
5. Reset.
6. Crystal oscillator.
7. LED indicators.

Software’s used:

1. PIC-C compiler for Embedded C programming.
2. PIC kit 2 programmer for dumping code into Micro controller.
3. Express SCH for Circuit design.
4. Proteus for hardware simul

       

     

BLOCK DAIGRAM OF TRAFFIC SIGNALS:  

   

     

Block Diagram:  

   

     

 

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