A power signal box is a vital component of the railway system used to control signals and points. There are several synonyms for a power signal box, including signal cabin, signal box, and control tower. A signal cabin is a building where signals for trains are operated manually, and it is usually found on the side of a railway track. A signal box is a similar structure, but it houses the levers and equipment that control the railway signals. Alternatively, a control tower is a type of high-tech signal box that uses computers and other technology to monitor and manage train operations. Regardless of the synonym used, each is essential equipment for the efficient and safe operation of trains.