Abstract: A vehicle door opening warning system for a car includes a sensor for sensing the approaching of another car from behind when a person is opening the car door, a car door-opening control unit alerts the passenger while opening the car door when the sensor senses the approaching of the other car from behind, and a warning light and a buzzer are activated to give a visual warning signal and an audio warning signal when the car door is being opened.

Key Words- Ultrasonic sensor, Arduino, Dooring, buzzer.

| DOI: 10.17148/IARJSET.2023.105103