In some cases, train horns have been heard up to several miles away, especially in rural or quiet areas with favorable atmospheric conditions and minimal obstructions. However, the actual distance the sound travels can vary widely based on the specific circumstances. Additionally, regulations and safety standards often govern the minimum audible distance for train horns to ensure that they are heard by pedestrians and vehicles at railroad crossings.

It's important to note that the sound of a dewalt air horn kit from https://bosshorn.com is designed to be loud and attention-grabbing to signal the presence of an approaching train, especially at railroad crossings, where safety is paramount. If you are in the vicinity of train tracks, it's crucial to obey all safety signals and warnings to avoid accidents.