ITE/IMSA 2014 Spring Meeting March 6, 2014 Signal Maintenance Practices. Bruce E. Littleton, PE, PTOE Traffic Engineering Supervisor

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1 ITE/IMSA 2014 Spring Meeting March 6, 2014 Signal Maintenance Practices Bruce E. Littleton, PE, PTOE Traffic Engineering Supervisor

2 Traffic Signal Shop Mission Statement Construct, modify and maintain traffic signals citywide to provide safe and efficient flow of vehicular, pedestrian and bicycle traffic in Phoenix 2

3 Traffic Signal Shop Staffing levels (79) Signal Construction (39) Signal Maintenance (35) Signal Shop Administration (5) Operating Maintenance budget - $5.2M Salaries & Materials for Maintenance- $3.2M Electricity - $2.0M 3

4 Traffic Signal Shop Shop staffed 24/5 Mon. AM to Fri. PM Signal Construction crews comprised of Electricians (19) and Helpers (14+7 vacant) led by three Foremen perform the electromechanical functions Signal Maintenance crews comprised of Signal Technicians (25+1 vacant) led by three Foremen perform the electronic functions 4

5 Traffic Signal Maintenance Responsive Maintenance (Reactive) Responding on demand to reports of malfunctioning or damaged traffic signals or ITS devices based on a hierarchy of priorities. Preventative Maintenance (Proactive) Performing inspections of the electronics and traffic signal device infrastructure and either immediately correcting deficiency or documenting need for further maintenance to restore the site to a state of good repair. 5

6 Responsive Maintenance Priorities 6

7 Responsive Maintenance Priorities Tier Response Time 1 (High) Less than two hours (24/7 Tier 1 (High) immediate response) 2 (Medium Within work shift (approx. 10 hours) 3 (Low) 1-4 months 4 (Very Low) 1 month 1 year, depending on internal priorities and resources 7

8 Responsive Maintenance Priorities Tier 1 (High) immediate response Call from Police Signal pole/equipment knockdown Signal in conflict Signal in flash mode 8

9 Responsive Maintenance Priorities Tier 1 (High) immediate response Light rail communication failure Call from citizen that there is a malfunctioning signal Critical red bulb out Pedestrian head out 9

10 Responsive Maintenance Priorities Tier 2 (Medium) Signal indication bulb out (red, yellow, green priority) Non-light rail communication failure at critical intersections 10

11 Responsive Maintenance Priorities Tier 3 (Low) Street light out at signal Non-light rail communication failure at noncritical intersections Detector loop replacement 11

12 Responsive Maintenance Priorities Tier 4 (Very Low) Illuminated street name sign Graffiti removal Pole and cabinet painting Damaged equipment that is structurally sound 12

13 Preventative Maintenance Preventative Maintenance Goals Electronics and basic equipment inspection including visual and functional test walk around performed by Signal Technicians on an annual basis Infrastructure inspection checking poles, mast arms, heads, anchor bolt nuts, signal head alignments, junction boxes, wiring, etc, by Electricians and Helpers on an annual basis 13

14 Preventative Maintenance Two Page form used signal technicians 14

15 Preventative Maintenance Signal Technician Checklist Highlights Inspect cabinet & power pedestal for physical damage. Secure & seal with caulking as needed. Vacuum and clean the interior of the cabinet & power pedestal. Verify the tightness of all terminals, lugs, screws, etc that are internal to the cabinet. Verify cable, plug & socket connections. 15

16 Preventative Maintenance Signal Technician Checklist Highlights Replace the MMU / CMU & perform monitor FLASH tests & failure latch tests. Verify controller programming, documentation & communications. Verify the intersection is cycling per the current timing sheet 16

17 Preventative Maintenance Signal Technician Checklist Highlights Visually check visors & doors of vehicle heads. Check vehicle & pedestrian heads for proper alignment. Verify that pedestrian detection is operational. Verify JB lids & hand-hole covers are present & secured. Record the cabinet s electrical current and voltage levels. 17

18 Preventative Maintenance Spreadsheet used by Electricians 18

19 Preventative Maintenance Electrician Checklist Highlights - Poles Check base condition, nuts tight, grouted, pole vertical, mast arm level Luminaire & Illuminated Sign - Check straight, level Heads Check that they are level, aimed correctly, and lenses & visors in good condition Miscellaneous pole related Check push button is secure and functioning, hand hole spicing secure, hand hole cover attached 19

20 Preventative Maintenance Electrician Checklist Highlights Jct. Boxes Check box in good condition and proper grade, check lid in good condition and sitting flat Check elevation of conduit entering box that it is not high or low and conduit sizing is OK (1 telco, all others 2 or greater) Make sure wires are in good shape and wire nuts are tight Make sure surrounding sidewalk isn t buckled, sinking, etc. 20

21 Preventative Maintenance Electrician Checklist Highlights - Service Check base condition, service pedestal securely mounted, weathertight, power company has their seals on their side Make sure door opens, closes, and locks properly Make sure wires are in good shape and terminations are tight, ground rod in good shape and ground wire attached and in good shape Check and record voltages on the I/S leg and across the 240 legs 21

22 Preventative Maintenance Electrician Checklist Highlights - Controllers Make sure pedestal is in good condition and confirm cabinet is securely mounted to pedestal (or pole) Make sure cabinet is weathertight and sealed to the pedestal Make sure police door and main door opens/closes and locks properly Make sure wires are in good shape and terminations are tight, check and record amperage - compare with previous readings to confirm they are close 22

23 Challenges 23

24 Challenges 24

25 Challenges 25

26 Signal Maintenance Practices QUESTIONS? Contact Information: Phone:

Traffic Signal Asset Management System (TSAMS)

BUREAU OF MAINTENANCE & OPERATIONS Traffic Signal Asset Management System (TSAMS) DATA COLLECTION PROJECT April 18, 2016 Why TSAMS? How many traffic signals exist in Pennsylvania? I don t know! How many