Enhancing Cyclist Visibility Using a Smart Reflective Safety Bag with Automated Light Indicators

Cyclist safety during nighttime rides remains a critical challenge due to low visibility and limited signaling capabilities. This study presents the development of a smart reflective safety bag designed to enhance cyclist visibility and communication through sensor-driven automation. The system integrates a Light Dependent Resistor (LDR) for ambient light detection, an MPU6050 accelerometer for braking recognition, and dual signal controls operated via mechanical switches or Bluetooth Low Energy (BLE). An ESP32 Development Module processes sensor inputs and user commands, while the ESP32 C3 Super Mini manages output signals through LED strips and 12V car-grade indicators using the ESP-NOW protocol for reliable wireless communication. Functional testing demonstrated accurate real-time response to low-light conditions, braking events, and directional commands, ensuring adaptive illumination and clear signaling. The smart safety bag combines wearable ergonomics, embedded system integration, and automated feedback, providing a robust, reliable, and user-friendly solution to improve cyclist safety and situational awareness.

Embedded Systems, Sensor Node, Output Node, NOW Protocol, LDR, MPU6050, Multiple LEDs

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