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mnIDOTTraffic Signal Timing and Coordination Manual <br />Use of��d�eed!��b�mmmend�.Non��\o|appnmuh�may he�|�er���than <br />the posted speed <br />-� �''-ed|im�becaus they are often ina�opcondd1onuponthnorhva|oftraffic. Grades <br />affect the acceleration rate of the left turner and the stopping distance and speed mfthe opposing <br />through traffic and are therefore considered inconjunction vxithspeeds. <br />v/ Cross Produu%`The l�tturn volume mu|t|p||adbythe opposing through volume. The cross product <br />values used e'e taken from the Wisconsin Department of Transportation (VVisDOT) TiofOu Signal <br />'| discussion n |e� turn conflicts analysis, Chapter 2, Section 3, Subject 4. Cross <br />Design Manual o , ' <br />product used ' eoents a high -frequency of conflicts for left turners looking for gaps in through <br />FY&duriug Free operation With the variable -phasing oparat—ion ofthe FYAheau' <br />fn�oper�ionwill nolonger have anass�nedf�ed phasing operation. fharefnne, standard free operationvNU needto baset up in the signal controller so <br />technicians can put signals quickly toFREE with astandard phasingoporetinn desired at the specific tinne . tl tha1vviUneodtobesetupinthesigna|contro||en <br />Herobonexnmp|eof�hestandavdFREEopera operations <br />1 All left turns protected <br />2. Ail left turns protected/permissive <br />3, All left turns permissive <br />4. Mainline protected, cross street protected permissive <br />S. Mainline protected, cross street permissive <br />G. Mainline protecte6/penn|ssive,cross street protected <br />7' Mainline prote uto6/perm)saive,cross street permissive <br />B. Mainline permissive, cross street protected <br />B. Mainline permissive, cross street protected/permissive Minimum Green Times <br />Minimum Green Times <br />K8n/OOTcorny�-�s�sthenininunn8naen�mebasedonthetypeofphas�goporat�nvohanap[otectad <br />` '—^ d minimum and pro�e�e6/oennbsk/�|af�have o Ssacpnd minimum green. <br />|e�� boma o 7sacon m -', <br />~ ^^'''—�~'- � ' operation head, d decision will need 1obemade astoifthere <br />Given the FYAhe�d is o variable phaa/nQmpe , a <br />should be more than one minimum green value that changes with the phasing operationj or if a universal <br />minimum green should apply toall phasing operations. <br />if one minimum green is used, and if a left turn phase will ever run protected, the left turn minimum green <br />should be set at seconds. if left turn will never run protected (i.e. only run protected/permissive or <br />pennYssive),then the left turn minimum green should beset a1Sseconds. <br />El/P Preemption Operation under FYA <br />A. Protected -only Operation <br />~/ When the FYA is not allowed (protected only), the pre-emption will bring up the protected left turn <br />and the adjacent through phase. The opposing FYAwill not beallowed during preemption (refer to <br />Exhibit 3-15). <br />^ May2O11 Local intersection Concepts - Page | 3-3I <br />