Daido Signal Co., Ltd. engages in the manufacture, sale, installment, and repair of railway signal safety devices, electrical equipment, and other mechanical devices in Japan. The company offers electronic interlocking systems, automatic train control systems, traffic control systems, monitoring devices for railway equipment, relay interlocking devices, signal relays, train detectors, automatic train stop systems, level crossing protection equipment, signal lights, and power supplies. It also provides on-board control systems for special vehicles, energy monitoring systems, and contactless ID tag systems. The company was founded in 1929 and is headquartered in Tokyo, Japan.