The sound of passing train tracks is usually a sharp and loud sound, often described as a "cringing" or "groaning" sound. This is the result of the train's wheel blades rolling on the rails, creating sound from the friction between the wheels and the rail. This sound can be heard from a distance and is often a sign of a train approaching or leaving a station or passing through changes. For many people, this sound is an indispensable and characteristic part of daily life, especially in areas near train tracks.