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Where: <br />California MUTCD 2014 Edition <br />(FHWA's MUTCD 2009 Edition,including.Revisions 1 &2,as arneilded for use in Califomia) <br />.Table 6H-4(CA).Taper Length Criteria for TemporaryTraffic Control Zones <br />(for 12 feet Offset Width) <br />Minimum Taper Length" <br />Speed'for Width of Offset 12 feet (\1\1) <br />S Merging Shifting Shoulder Down(mph).'L U2 U3 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 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 />L ~taper length In feet <br />W ~width of offset i~feet . <br />S ~posted speed limit,off-peak 85th-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 />-. <br />Chapter 6H -Typical Applications <br />Part 6 -Temporary Traffic Control <br />November 7,2014