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California MUTeD 2014 Edition <br />(FHWA's MUTCD 2009 Edition,incll!dL"gl<evisions 1 &2,as ameHded for use in Califomia) <br />Table 6H-4(CA).Taper Length Criteria for Temporary Traffic Control Zones <br />(fOl'12 feet Offset \IIlidth) <br />Minimum Iaper Length" <br />Speed'for \IIlielth 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 I 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 I 50 <br />70 840 420 280 50 <br />L"75 900 450 300 50~.-,..-..•. <br />'-Posted speed limit,off-peak 85th-percentile speed priOf-to worl<starting,orthe anticipated operating <br />speed in mph, <br />'*-For other offsets use the following merging taper length fonTIuiafor L: <br />For speeds of 40 mph or less,L~\IIlS2/60 <br />For speeds of 45 mph or more,L~\IIlS <br />Page 1137 <br />\IIlhere:L ~taper length in feet <br />\Ill ~width of offset i~feet <br />S ~posted speed limit,off-peak 85u1-percentiie speed prior to wor!< <br />starting,orthe anticipated operating speed in mph <br />~*-Malcimum downstream taper lenglh is 100 feet.See Section 6C.08. <br />Chapter 6H -Typical Applications <br />Part 6 -Temporaty Traffic Control <br />November 7,2014