Traffic Signals 101 - PowerPoint PPT Presentation

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Traffic Signals 101

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  1. Traffic Signals 101 Topic 3 Field Components

  2. Field Components Full Intersection Picture

  3. Field Components Luminaire EVP Detector Type “D” Sign Signal Head Mast Arm Pole

  4. Field Components • Foundation Standard Plate

  5. Field Components Anchor Bolt Foundation Cage

  6. Field Components Foundation Video

  7. Field Components • Transformer Standard Plate

  8. Field Components Pole Base and Transformer

  9. Field Components Transformer Access Panel

  10. Field Components • Pole and Mast Arm Standard Plate

  11. Field Components Stamp Pole

  12. Field Components 3-section Protected Left Turn Signal

  13. Field Components Protected/Permissive Signal Head

  14. Field Components Steady Red Arrow – Drivers turning left must stop and wait. Steady Yellow Arrow – Drivers are warned that the left-turn signal is about to go to red and they should prepare to stop, or prepare to complete their left turn if they are within the intersection. Flashing Yellow Arrow - Drivers are allowed to turn left after yielding to oncoming traffic and pedestrians. (Oncoming traffic has a green light.) Drivers must determine if there is an adequate gap before turning! Flashing Yellow Arrow - Drivers are allowed to turn left after yielding to oncoming traffic and pedestrians. (Oncoming traffic has a green light.) Drivers must determine if there is an adequate gap before turning! Flashing Yellow Arrow Animation WCCO Interview

  15. Field Components Mast Arm Pole

  16. Field Components Arm Spacing

  17. Field Components 3-section signal head 5-section signal head

  18. Field Components EVP Unit Type “D” Sign

  19. Field Components Head Bracket Hinge

  20. Field Components Luminaire Luminaire Extension

  21. Field Components • Ped Foundation Standard Plate

  22. Field Components Pedestal Base Pedestal Pole

  23. Field Components Base w/ Wind collar Pedestal Pole Foundation

  24. Field Components Pedestal Bracket Pedestal Bracket Long Pole w/bracketing

  25. Field Components One Way Signal & Pedestrian Indication Mount

  26. Field Components Push Button Sign Pedestrian Push Button Station

  27. Field Components • Pedestrian Hybrid Beacons • Often referred to as a HAWK Signal

  28. Field Components • Saw Cut Detail

  29. Field Components Saw-Cut Loop Detector

  30. Field Components • Non-Metallic Loop Detail

  31. Field Components Non-Metallic Loop (NMC)

  32. Field Components • Handhole Standard Plate

  33. Field Components Handhole Video

  34. Field Components Pedestrian Ramp Crosswalk

  35. Field Components Signal Cabinet and Pad Service Cabinet

  36. Field Components Source of Power (SOP)

  37. Field Components Video Detection Microwave Detection Sonic Detection

  38. Field Components • Enforcement Lights

  39. Field Components Signal Ahead Sign

  40. Field Components Advance Warning Flasher (AWF)

  41. Field Components Span Wire Signal

  42. Field Components Span Wire Signal Heads