MTH: 30-90675 Blue Island Switch Tower A railroad switch tower, also known as a signal tower or interlocking tower, is a structure typically found near a railway junction or a complex network of railroad tracks. Its purpose is to control the switches and signals that determine the movement of trains through the junction or the switching yard. The switch tower is usually positioned at a location that provides a good vantage point for the operator to oversee the tracks and make decisions regarding train routing and switch alignments. Historically, switch towers were manned by operators who manually operated the switches and signals using levers and other mechanical controls. However, with advancements in technology, many switch towers today are remotely operated or automated. M.T.H. Electric Trains offers a variety of RailTown buildings to help you create whatever kind of atmosphere you desire; rural or urban, nostalgic or modern. Operating buildings transfer your layout’s action from trains to structures adding fun and excitement to the entire pike. RailTown buildings are a perfect addition on any O Gauge layout, as each is sized for use with all O Gauge locomotives and rolling stock regardless of manufacturer. Fully assembled and ready-to-use, M.T.H. accessories will transform your layout into a world of action in just minutes.