Rail profile refers to the shape and design of the rail, which determines how it interacts with train wheels. It typically includes a flat base, a vertical section, and a rounded top, known as the head, where the train wheels make contact. The design of the rail profile ensures that the train runs smoothly, distributes weight evenly, and helps prevent wear and damage to both the rails and the wheels. Different rail profiles are used depending on the type of train, the expected load, and the conditions of the track.

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