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Traffic Signals 101

Traffic Signals 101. MnDOT Sample Plan - Jerry Kotzenmacher MnDOT. Without a plan!. Traffic Signal Plans. Why do we need a plan? Building the traffic signal. Bidding Tort Claims Maintenance Locates. Title Sheet - front page. Title Sheet

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Traffic Signals 101

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  1. Traffic Signals 101 MnDOT Sample Plan - Jerry Kotzenmacher MnDOT

  2. Without a plan!

  3. Traffic Signal Plans • Why do we need a plan? • Building the traffic signal. • Bidding • Tort Claims • Maintenance • Locates

  4. Title Sheet - front page • Title Sheet • The title sheet is required for all traffic signal plans. It includes information such as the title block, project location, governing specifications, etc.

  5. Title Sheet - front page • Governing Specs and Index of Sheets This defines the governing specifications for the project, the project funding and the index of the sheets contained within the plan set.

  6. Title Sheet - front page • Signature Block The Designer should consult with the MnDOT project manager to ensure that the appropriate signature block is used.

  7. Title Sheet - front page • Index Map The index map is used to identify the location of the project(s).

  8. Title Sheet - front page • Standard Plates Summary This identifies the list of Standard Plates that are applicable to this project.

  9. Title Sheet - front page • Plan Symbols & Abbreviations

  10. Title Sheet - page 2 • Quantity Sheet

  11. ALL SHEETS • Title Block The title block is required on all sheets. For the intersection layout sheet the signal system ID, meter address and TE number should be included

  12. Page 3 - Pole Mount Detail • Details

  13. Page 4- APS P. B. Station Details • Details

  14. Page 5 - Equipment Pad Details • Details

  15. Page 6 -Pole Wiring Connector Details • Details

  16. Page 7 - Fiber Optic Schematic Details • Details

  17. Page 8 - Ped Curb Ramp Details • Details

  18. Page 13 - Pavement Markings & Signs Details

  19. Page 14 - Utilities Layout

  20. Not part of your plan Details

  21. Page 9 - Signal Layout Signal Face Chart Scale Loop Detector Chart Conduit Wires 4” Conduit 2-12/C/#14 1-6/C#14 2-4/C#14 *1-3/C#14 1/3/C#14 (LUM) 2-2/C#14 *1-3/C#14 1-1/C #6 Ins. Gr Loop Detectors Road Lines conduit Construction Notes Ped diagram and Phasing

  22. Page 9 - Intersection Layout • Typical Controller Phasing Diagram 8 phase NEMA Controller

  23. Controller Operations • Phasing • Dual-ring and Concurrent group Controllers

  24. Match line Match line Page 10 - Signal Layout Pole Notes Advance Detectors

  25. Page 9 & 10 - Intersection Layout • Equipment Pad and SOP Notes Label, in a circle, the controller cabinet or equipment pad “A” and the source of power “B”

  26. Controller & Service Cabinet

  27. Page 9 - Intersection LayoutMast Arm & Pole Symbols Signal Head Indication Signal Head Number Emergency Vehicle Pre-emption Luminaire Mast Arm Signal Pole Base

  28. Page 9 - Intersection LayoutPole Notes • Signal Base Notes The pole note lists the foundation, pole, mast arm and everything that goes on it (signs, heads, hinges, etc) or in it (conductors).

  29. Picture of Pole 4

  30. Page 9 - Intersection Layout • Pole 4 Mast arm is 0 degrees Signal Pole Base

  31. Page 9 and 10 - Intersection Layout Pedestrian Signal Face Pedestrian Push Button

  32. Page 9 and 10 - Intersection Layout • Signal Faces Table

  33. Page 9 and 10 - Intersection Layout • Loop Detectors Table

  34. Page 9 and 10 - Intersection Layout • Handhole Labeling Handhole 1 Number handholes clockwise with respect to the controller cabinet with Number 1 being adjacent to or near the controller cabinet. It is not necessary to use H.H. Handhole 17 Handhole 16

  35. Page 11 - Field Wire Diagram Pole 1 Ped station PB2-1 12/c#14 wire Controller cabinet Handhole 14 w/loop Detectors Service cabinet

  36. Page 12 - Field Wire Diagram(2nd Sheet of Wire Diagram) Controller cabinet Cable 58 Heads 5-1 And 2-3 All cables Have numbers Grounded Ins. GR. Cable 58 Ground rod Heads 5-1 And 2-3

  37. Wiring Diagram • Field Wiring

  38. Wire Diagram to LayoutCross reference • page 12 page 9

  39. Wiring Notes • Field Wiring

  40. Interconnect layout - NOT PART OF YOUR PLAN • Traffic Control Interconnect Layout • 1:100 Scale • Include a North Arrow • Include a Scale Graphic • Include General Notes • Clearly Show Guardrail

  41. Other Material Reference • MnDOT Manuals • Signal Design Manual • Roadway Lighting Manual • Signal Timing Manual • Traffic Engineering Manual • MN-MUTCD

  42. It workedwhen I left! • Questions?

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