• Vrushali Subhash Thoke
• Sakshi vijay sanap
• Sayali mahendra markad
• Dr. Ravindra G. Dabhade
• Prof. Harsha. P. Bhamare

This research paper presents a Programmable Logic Controller (PLC)-based vehicle density control system, which efficiently manages traffic by adjusting signal timings based on real-time vehicle density at intersections. The system incorporates infrared sensors, PLC programming, and intelligent automation to dynamically modify green light durations, ensuring smoother traffic flow, reducing waiting times, and optimizing fuel consumption. By implementing a real-time traffic management approach, the system minimizes congestion and enhances road safety while improving commuter convenience. The proposed PLC-based approach is cost-effective, scalable, and easy to integrate with existing traffic infrastructures. Furthermore, it can be enhanced with Internet of Things (IoT) and artificial intelligence (AI)-based predictive traffic modeling to further optimize urban mobility. The results indicate significant improvements in traffic flow efficiency, reduced idle times at signals, and overall lower emissions due to decreased vehicle stoppage. This study highlights the potential of automation in revolutionizing traditional traffic management systems and making urban transportation more intelligent and adaptive to dynamic road conditions. Traditional traffic control systems operate on fixed time cycles, leading to inefficient traffic management. This research paper presents a Programmable Logic Controller (PLC)-based vehicle density control system that dynamically adjusts traffic signal timing based on real-time vehicle density. By integrating sensors, PLCs, and intelligent programming, the system aims to improve traffic flow, reduce congestion, minimize fuel consumption, and enhance road safety. The proposed system provides an efficient and adaptive solution for modern urban traffic management.

PLC, Traffic Control, Vehicle Density, Automation, Smart Traffic Management.

"VEHICLES DENSITY CONTROL USING PLC", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.12, Issue 3, page no.e990-e996, March-2025, Available :http://www.jetir.org/papers/JETIR2503524.pdf

"VEHICLES DENSITY CONTROL USING PLC", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.12, Issue 3, page no. ppe990-e996, March-2025, Available at : http://www.jetir.org/papers/JETIR2503524.pdf