A car reverse horn, often referred to as a reverse warning alarm, is a safety device installed in vehicles to alert pedestrians and other drivers when the vehicle is reversing. The main device that produces the sound, usually mounted at the rear of the vehicle. Recommended for proper integration with the vehicle’s electrical system. Regulations regarding reverse horns vary by region; some places have specific sound levels and types that are permissible. Ensure the reverse horn complies with local traffic and noise regulations to avoid fines or penalties. Look for a robust, weather-resistant model suitable for the vehicle’s operating environment.