1. 2015 Traffic Signals 101 Topic 13 Maintenance

2. Office of Traffic, Safety, and Technology Maintenance Maintenance Agreements Agreements - the Maintenance responsibilities are spelled out in the MINNESOTA DEPARTMENT OF TRANSPORTATION TRAFFIC CONTROL SIGNAL AGREEMENT Refer to Topic 2 regarding agreements 2

3. Office of Traffic, Safety, and Technology Maintenance Maintenance Agreements Power cost provider is specified in the agreement The maintenance responsibilities will be outlined in this agreement Maintenance is divided into two categories for entity responsibilities: Minor Maintenance Major Maintenance 3

4. Office of Traffic, Safety, and Technology Maintenance Maintenance Agreements Minor maintenance –Vehicle indication lights –Luminaire lamp replacement –Paint signals Major Maintenance –Knockdowns –Loop replace/repair –Head replace 4

5. Office of Traffic, Safety, and Technology Maintenance Traffic Signal Maintenance can be divided into four categories Response Maintenance Preventative Maintenance Operations Maintenance Design Modification 5

6. Office of Traffic, Safety, and Technology Maintenance Maintenance Responsibilities Response Maintenance Knockdowns Heads turned/indications out Loop failure Operations complaint 6

7. Office of Traffic, Safety, and Technology Maintenance Maintenance Responsibilities Preventative Maintenance Performed by MnDOT Electrical Services Unit (ESU) Performed every 12-24 months Test MMU Check indications Check loops Check pedestrian pushbuttons Check controller and clock Additional items 7

8. Office of Traffic, Safety, and Technology Maintenance Maintenance Responsibilities Operations Maintenance (check) Performed by MnDOT District Operations Staff Performed every 6 - 12 months Check operation Check indications Check loops Check pedestrian pushbuttons Check controller and clock Clean cabinet and replace air filter(1/per year) 8

9. Office of Traffic, Safety, and Technology Maintenance Maintenance Responsibilities Design Modification Performed on an as needed basis or as funding allows. Upgrading outdated equipment Replacing end of life hardware ADA upgrades Flashing yellow arrow retro fit 9

10. Office of Traffic, Safety, and Technology Maintenance New Signals District Operations Responsibilities District assures the timing and operation needed is programmed into the controller. All indications, loops, ped buttons, evp are checked to assure the signal is operating at 100% at turn on When a new signal is placed into operation, a log book must be put into the cabinet, along with field intersection layouts and cabinet prints. The pole base connector detail must be part of the log book or cabinet file. 10