Specifications include, but are not limited to: The work included in this contract shall consist of the complete maintenance and upkeep of the traffic signal system and inspection for the ITS system for Livingston, Washtenaw and Monroe Counties on a 24 hours a day, 365 days a year basis by a Michigan Department of Transportation (MDOT) prequalified Contractor for Electrical Construction (L) and Intelligent Transportation Systems (ITS) work. The Contractor shall supply all personnel, training, tools, equipment and any other needs necessary to maintain the system in a first-class operating condition at all times. The Contractor shall promptly respond to all emergency calls regardless of the hour. Maintenance will be required for approximately 52 signalized intersections for Livingston County, 61 signalized intersection for Monroe County, 3 rest areas, 4 freeway lighting interchanges, and 6 weigh scale houses as shown in Schedule E. Locations identified above will include all controllers, internally illuminated case signs, pedestrian signals, traffic controls signals of all types, traffic signal poles, messenger or support cables, mast arms, in-pavement loop detectors for signal actuation, pedestrian push buttons, overhead lane designation signs, wiring and all other pertinent and related equipment existing at the time the contract is executed. The Contractor should reasonably maintain a sufficient inventory (supplied by MDOT) of signals, controllers, detectors and all incidental brackets, fittings, cables, illuminated signs, LED signal heads, etc. necessary for the completion of intersection repairs as may be required. Controllers and other major components furnished must be consistent (i.e., the same make and manufacturer) with signal equipment already in use and in operation on the system under MDOT jurisdiction. The scope of service may be extended to additional counties in the University Region as needed. The additional counties include Jackson, Hillsdale, Lenawee, Eaton, Clinton, and Ingham.