Highway Maintenance Response Time Standards

DRAFTFigure 6. Benefit of Department’s Bridge Corrective Maintenance Program.CURRENT SIGNAL CONDITIONSPreventive maintenance (PM) on traffic signals is recommended at 1 year intervals,however the actual maintenance interval is often much longer. In order to maintain thereliability of these signals (and more importantly the mobility and reliability of thetransportation network), a focus needs to be placed on routine PM for the 6000 signalsoperated and maintained by the Department. There is further need for upgradingobsolete signal components, such as the Model 179 controllers, and install elementsconsistent with the current state of the practice.Program Update Instructions: August, 200424