Motor vehicles like motorbikes, cars, tractors and trucks use horns to alert pedestrians and traffic. Railroad locomotives also use horns to alert railroad crossing and while shunting. A horn for Vehicles and Rail locomotives is paramount since it alerts people by creating a loud sound. Even Cruise and Cargo ships use a loud horn to alert the Port crew. All horns are designed to produce sound that alerts or arouses the surrounding areas. The amplitude and frequency or spectral content of each horn may vary based on application. Listen to different horn sounds in this app such as car horn, jeep horn, truck horn, tractor horn, railroad locomotive horn, ship and subway horn. Enjoy the app!