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Traffic Signal Maintenance – Best Practices

Traffic Signal Maintenance – Best Practices. With: Mike Kato Beza Kedida Cedric Novenario Presented by: Steve Fitzsimons. Presented to: ITE Western District Annual Meeting Santa Barbara June 25, 2012. Outline. Introduction Summary of new ITE/IMSA handbook Typical current practice

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Traffic Signal Maintenance – Best Practices

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  1. Traffic Signal Maintenance – Best Practices With: Mike Kato Beza Kedida Cedric Novenario Presented by: Steve Fitzsimons Presented to: ITE Western District Annual Meeting Santa Barbara June 25, 2012

  2. Outline Introduction Summary of new ITE/IMSA handbook Typical current practice “New tech” recommendations

  3. Why Maintain Traffic Signals? • To preserve the benefits that the original installation provided • To give motorists a consistent driving environment • To avoid liability claims • Extend life of installation and reduce life cycle costs Source ITE/IMSA

  4. Types of Maintenance • Based on Traffic Signal Maintenance Handbook (ITE/IMSA, 2010) • Preventative Maintenance • Response Maintenance • Design Feedback/Updates • Asset Management Source ITE/IMSA

  5. Preventative Maintenance • Predictable, Scheduled Work • Clean, Inspect, Adjust • Signal Heads • Ped Push Buttons • Signal Poles • Pull Boxes and Conduit • Conductors • Detection – Loops, VIDS, or other • Signs • Battery Backup/BBS • Controller and Service Cabinets • Inventory Source ITE/IMSA

  6. Response Maintenance • Unpredictable, As-Needed Work • Diagnose and Repair • Unexpected flashing operation • Communications failures • Pole knockdowns • Burned out lamps • Wire theft Source ITE/IMSA

  7. Asset Management • Relatively New National Guideline • Input and Response Tracking • Good general concept • What types of calls are consuming staff time • Feedback to design standards • Inventory Tracking • Build a database • Keep track of parts or suppliers that are most reliable • Feedback to technical specifications Source ITE/IMSA

  8. Typical Current Practice • Basis for statements: • Republic ITS/Siemens provides contract maintenance to over 200 public agencies in CA and 300 nationally • Most of our clients have under 100,000 population • Many of our clients do not have dedicated traffic engineering staff

  9. Typical Exclusions • Preventative Maintenance • Keep inventory of part installation dates or manufacturing source • Signal timing in office • Trim vegetation • Check conductor condition • ‘Meg’ or reseal loops wires • Annual load test of BBS batteries • Compare timing settings to current recommendations • Any kind of Asset Management

  10. Why are there exclusions? • Cost • No traffic engineering staff so what would they do with the asset data anyway? • Reliance on judgment of maintenance crews

  11. “New Tech” Equipment • Traffic signal equipment has evolved considerably in the last 10-20 years • LED signal heads • Video detection systems • Fiber optic or wireless interconnect • Battery backup systems • Components with Ethernet connections

  12. “New Tech” Recommendations • LED Signal Heads • Re-lamp every 5-10 years • Video Detection Systems (VIDS) • Annually test aiming and accuracy of detection zone shapes • Fiber Optic Interconnect • Monthly vacuum dust off components

  13. “New Tech” Recommendations • Wireless Interconnect • Annually check comm error reports • Battery Backup Systems • Annually perform battery load tests • Modern equipment with Ethernet ports • Buy diagnosis software and connection cables

  14. Thanks for your attention Time for your questions

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