Traffic Engineering Services is a part of the city of Denver. It develops, reviews, evaluates and implements transportation system. The division provides services to the police, public works and information technology departments. It maintains a fiber optic communication network and operates the transportation management center. Traffic Engineering Services is responsible for the operation, maintenance, installation and emergency repair of traffic control devices. The division works with other agencies to provide and implement mobility modifications and improvements. It provides review services for various privates and public projects. The division maintains several work groups, such as electronics repair, utility locates, and sign installation and manufacturing. Traffic Engineering Services is based in Denver.