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Where: <br />C;alifOirua MUTCD 2014 Edition <br />(Fl-IWA's MUTCD 2009 Edition,including Revisions 1 &2,as a1nended for use in Ca!ifomia) <br />Table 6H-4(CA).Taper Length Criteria for Temporary Trafiic Control Zones <br />(for 12 feel Offset Width) <br />Minimum IapeI'length*' <br />S1Jeed"for Width of Offset 12 feet (\1\1) <br />S Merging Shifting Shoulder Down(mph)L U2 L/3 Stream <br />(feet)(feet)(feet)(feet)'''' <br />20 80 40 27 50 <br />25 125 63 42 50 <br />30 180 90 60 .50 <br />35 245 123 82 50 <br />40 320 160 107 .50 <br />45 540 270 180 50 <br />50 600 300 200 I 50 <br />55 660 330 220 50 <br />60 720 360 240 50 <br />65 780 390 260 50 <br />70 840 420 280 50 <br />75 900 450 300 50 . <br />•-Posted speed limit,off-peak 85th-percentile speed prior to work starling,or the anlicipatedoperaling <br />speed in mph.. <br />.,-For other offsets use the following merging taper length formula for L: <br />For speeds of 40 mph or less,L=WS2/60 <br />For speeds of 45 mph or more,L=WS <br />L =taper length in feet <br />II\!=width of offset i~feet . <br />S =posted speed limit,off-peak 85~-percentile speed prior to wori( <br />starting,or the anticipated operating speed in mph <br />."-Maximum downstream taper length is 100 feet.See Section 6C.08. <br />Page 1137 <br />Chapter 6H -Typical ApplicationsPmt6-Tempormy Traffic Control <br />November 7,2014