Work

Development of a Smart Traffic Light Control System with Adaptive Timing Using a Siemens PLC Training Kit

Year: 2026

Type: preprint

Abstract: Fixed-time traffic signals cannot respond to changing traffic demand and often waste green time. This paper presents a smart traffic light controller with adaptive green-time extension designed for a Siemens PLC training kit and evaluated by simulation. Vehicle presence is detected by sensors, and the program adjusts the green interval within minimum and maximum limits while respecting yellow and all-red clearance intervals and a safe fault mode. The behavior is compared with a fixed-time plan for several simulated traffic scenarios. In simulation the adaptive controller reduced the mean waiting time per vehicle by 49 % (low), 29 % (medium) and 45 % (high demand) compared with a fixed 25 s plan.

Source: Zenodo (CERN European Organization for Nuclear Research)

DOI: 10.5281/zenodo.23835167

Authors: Muhyýew, Polat, Orazov, Yslam, Durdyyev, Sahetnur

Institution: Oguz Han Engineering and Technology University of Turkmenistan

Language: English

Topic: Traffic control and management

Subfield: Control and Systems Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Sustainable cities and communities, Industry, innovation and infrastructure

Open Access status: green

OpenAlex ID: W7224994546

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