Fl Flashing shing Ye Yellow low Arrow row Signal Design and - - PowerPoint PPT Presentation

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Fl Flashing shing Ye Yellow low Arrow row Signal Design and - - PowerPoint PPT Presentation

Jan 25, 2023 270 likes •652 views

The he 2011 MUTCD, CD, Le Left Tur urn n Si Sign gnal al Operations rations and nd Fl Flashing shing Ye Yellow low Arrow row Signal Design and Operation 1 Part 4 Highway Traffic Signals http://mutcd.fhwa.dot.gov/ser-

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The he 2011 MUTCD, CD, Le Left Tur urn n Si Sign gnal al Operations rations and nd Fl Flashing shing Ye Yellow low Arrow row

Signal Design and Operation

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Sig ignifica nificant nt Changes anges Part 4 – Highway Traffic

Signals

http://mutcd.fhwa.dot.gov/ser-

Training.htm

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2009 MUTCD (Final Rule)

Revisions Incorporated into the 2009 MUTCD

Section 4D.11 – Recommended number, location, and design of signal faces for approaches with speeds > 45 mph:

  • Face per thru lane,
  • verhead, far side,

with backplates 1 or more supplemental faces

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2009 MUTCD (Final Rule)

Revisions Incorporated into the 2009 MUTCD

Section 4D.11 – Recommended minimum number of thru signal faces

  • n approaches with speeds > 45 mph:
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Left ft Tur urn n Signa gnal l Faces s

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2009 MUTCD (Final Rule)

Revisions Incorporated into the 2009 MUTCD

Sections 4D.17 to 4D.20 – Signal indications for left turns

  • Elimination of provisions that

allowed “Dallas” displays

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Sha hare red d Left ft Tur urn n Sig ignal nal Faces

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Separ parate ate Left ft Tur urn n Signal gnal Face

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Separ parate ate Left ft Tur urn n Signal gnal Faces

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2009 MUTCD (Final Rule)

Revisions Incorporated into the 2009 MUTCD

Section 4D.13 – Positioning of

  • verhead separate signal faces for

turn movements

  • If installed
  • verhead for a

dedicated turn lane, the separate turn face shall be located over the turn lane (not necessarily centered over the lane)

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2009 MUTCD (Final Rule)

Revisions Incorporated into the 2009 MUTCD

Chapter 4D Optional use of flashing yellow arrow for permissive turns

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 FLASHING YELLOW ARROW

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FYA Sequence: Simultaneous Leading Protected/Permissive LTs

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FYA Sequence: Simultaneous Leading Protected/Permissive LTs

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FYA Sequence: Simultaneous Leading Protected/Permissive LTs

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FYA Sequence: Simultaneous Leading Protected/Permissive LTs

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FYA Sequence: Simultaneous Leading Protected/Permissive LTs

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FYA Sequence: Simultaneous Leading Protected/Permissive LTs

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FYA Sequence: Simultaneous Leading Protected/Permissive LTs

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 FLASHING YELLOW ARROW

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FYA Sequence: Lagging Permissive/Protected LT when Opposite Direction Has a Leading LT

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FYA Sequence: Lagging Permissive/Protected LT when Opposite Direction Has a Leading LT

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FYA Sequence: Lagging Permissive/Protected LT when Opposite Direction Has a Leading LT

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FYA Sequence: Lagging Permissive/Protected LT when Opposite Direction Has a Leading LT

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FYA Sequence: Lagging Permissive/Protected LT when Opposite Direction Has a Leading LT

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FYA Sequence: Lagging Permissive/Protected LT when Opposite Direction Has a Leading LT

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FYA Sequence: Lagging Permissive/Protected LT when Opposite Direction Has a Leading LT

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Whe here To

  • Im

Imple pleme ment nt

 Optional use protected /permissive

  • peration

 Currently not for Diamond phasing  Evaluate conditions

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Equipmen uipment t Is Issue ues

 Controllers  Monitors  Cabinets

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Con

  • nclusion

clusion – Qu Questi tions?

  • ns?

 Part 4 Changes  Flashing Yellow Arrow

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