American Signal Company, also known as AMSIG, is a Georgia-based company that manufactures a range of programmable message sign products for informational and traffic control applications. It offers signs, signals, and systems for traffic control and congestion mitigation for various situations and incidents. American Signal Company provides highway advisory radios and changeable message signs for applications related to homeland security, incident management, special events, construction information, and immediate evacuation and security. It also offers a variety of portable changeable message signs that display alphanumeric text messages. The company provides stationary changeable message signs that can be customized according to individual and project requirements. In addition, American Signal Company manufactures flashing beacon signs.