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

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- Training.htm Sig ignifica nificant nt Changes anges 2

Section 4D.11 – Recommended number, location, and design of signal faces for approaches with speeds > 45 mph: - Face per thru lane, 1 or more overhead, far side, supplemental Revisions Incorporated into the 2009 MUTCD with backplates faces 2009 MUTCD (Final Rule)

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Section 4D.11 – Recommended minimum number of thru signal faces on approaches with speeds > 45 mph: Revisions Incorporated into the 2009 MUTCD 2009 MUTCD (Final Rule)

Left ft Tur urn n Signa gnal l Faces s 6

Sections 4D.17 to 4D.20 – Signal indications for left turns • Elimination of provisions that allowed “Dallas” displays Revisions Incorporated into the 2009 MUTCD 2009 MUTCD (Final Rule)

Sha hare red d Left ft Tur urn n Sig ignal nal Faces 8

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Separ parate ate Left ft Tur urn n Signal gnal Face 10

Separ parate ate Left ft Tur urn n Signal gnal Faces 11

Section 4D.13 – Positioning of overhead separate signal faces for turn movements • If installed Revisions Incorporated into the 2009 MUTCD overhead for a dedicated turn lane, the separate turn face shall be located over the turn lane (not necessarily centered over the lane) 2009 MUTCD (Final Rule)

Chapter 4D Optional use of flashing yellow arrow for permissive turns Revisions Incorporated into the 2009 MUTCD 2009 MUTCD (Final Rule)

 FLASHING YELLOW ARROW 14

FYA Sequence: Simultaneous Leading Protected/Permissive LTs 15

FYA Sequence: Simultaneous Leading Protected/Permissive LTs 16

FYA Sequence: Simultaneous Leading Protected/Permissive LTs 17

FYA Sequence: Simultaneous Leading Protected/Permissive LTs 18

FYA Sequence: Simultaneous Leading Protected/Permissive LTs 19

FYA Sequence: Simultaneous Leading Protected/Permissive LTs 20

FYA Sequence: Simultaneous Leading Protected/Permissive LTs 21

 FLASHING YELLOW ARROW 22

FYA Sequence: Lagging Permissive/Protected LT when Opposite Direction Has a Leading LT 23

FYA Sequence: Lagging Permissive/Protected LT when Opposite Direction Has a Leading LT 24

FYA Sequence: Lagging Permissive/Protected LT when Opposite Direction Has a Leading LT 25

FYA Sequence: Lagging Permissive/Protected LT when Opposite Direction Has a Leading LT 26

FYA Sequence: Lagging Permissive/Protected LT when Opposite Direction Has a Leading LT 27

FYA Sequence: Lagging Permissive/Protected LT when Opposite Direction Has a Leading LT 28

FYA Sequence: Lagging Permissive/Protected LT when Opposite Direction Has a Leading LT 29

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 Optional use protected /permissive operation  Currently not for Diamond phasing  Evaluate conditions Whe here To o Im Imple pleme ment nt 31

 Controllers  Monitors  Cabinets Equipmen uipment t Is Issue ues 32

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 Part 4 Changes  Flashing Yellow Arrow Con onclusion clusion – Qu Questi tions? ons? 37