Traffic Control Devices, LLC (TCD) is a subsidiary of Asplundh Tree Expert, LLC. Established in 1978, TCD has earned a reputation of quality in the electrical contracting and transportation engineering industry. We specialize in the design, construction, implementation, and maintenance of Intelligent Transportation System projects and their associated communications, control, and display hardware. TCD installs, integrates, tests, and maintains fiber optic, wireless, copper, and hybrid communications systems. Maintaining strong professional relationships throughout the Intelligent Transportation System industry allows TCD to continue to provide the highest quality services, maintenance, enhanced system performance, and value for our clients.