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Califomia MUTCD 2014 T:\diaon <br />(FtIWA's MUTeD 2009 Ediiion,including Revisions 1 &2,as amended for lise in Cclifornia) <br />Table 6H.4(CA).Taper Ler,gtil CrEeria for Temporary Trafiic Co:-tlroi Zones <br />(for 12 feet Offset Width) <br />Page 1137 <br />l\Iiinirnul11Tal)er Length" <br />Speed'for Width of Offsei '12feet (W) <br />S Merging Shiftil1g SllOulcier Down(mph)L U2 U3 Stream <br />(feet)(feel)(feel)(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 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 85fu-percentile speed prior to work starting.or the anticipated operating <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 />Where:L =taper iength in feet <br />W =width of offset i~feetS=posted speed limit,off-peal(85'h_percentilespeed prior to worl, <br />starting.or the anticipated operating speed in mph <br />•••-Maximum downstream taper length is 100 feet.See Section 6C.08. <br />Chapter 8H -Typical Applications <br />Part 8 -TemporaIY Traffic Control <br />Novemher 7.2014