Development of an IoT-Based Smart Vest for Occupational Safety Monitoring of Traffic Enforcers

Abstract

Traffic enforcers are frequently exposed to hazardous working conditions such as extreme heat, air pollution, prolonged standing, and physically demanding roadside operations. Existing wearable monitoring devices are often limited to fitness tracking and lack automatic emergency detection, environmental monitoring, and cloud-based communication capabilities. This study proposes the development of an IoT-based Smart Vest designed to support the occupational safety of traffic enforcers through real-time health and environmental monitoring. The system integrates multiple sensors, including heart rate, body temperature, motion, air quality, humidity, and GPS modules connected to an ESP32 microcontroller. Threshold-based monitoring logic is utilized to evaluate sensor readings and classify conditions into normal, warning, and critical states. The system also employs Internet of Things (IoT) technologies to transmit monitoring data to a Firebase Realtime Database and a Flutter-based mobile application for monitoring and emergency response purposes. When abnormal conditions are detected, the system automatically triggers SOS alerts and transmits GPS location data to authorized users and emergency contacts through Firebase Cloud Messaging.