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California MUTCD 2012 Edition Page 1136 <br /> (FHWA's NMTCD 2009 Edition,as amended for use in California) <br /> 'Table 6H-4. r-drMulasfor ink6T <br /> inaiper Length <br /> 4ePO(s) Tape I- <br /> ,09th(L)In feet <br /> .4b.fbph or less <br /> 45mph or pio(6 <br /> Mere;L t-fapet j6p§lfl in feet <br /> W:z-widi(i of ofr*In fq6t <br /> Table 6H-4(CA).Taper Length Criteria for Temporary Traffic Control Zones <br /> (for 12 feet Offset Width) <br /> FMinimum Taper Length* � <br /> Speed* for Width of Offset 12 feet(W) <br /> S <br /> (m Merging Shifting Shoulder Down <br /> 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 /> Speed* <br /> S <br /> (mph)7( � <br /> 50 600 300 200 50 <br /> 55 660 330 220 50 <br /> .60 720 360 --240 50 1 <br /> 65 780 390 260 50 <br /> 70 840 420 280 50 <br /> Posted speed limit,off-peak 85th-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 length in feet <br /> W=width of offset in feet <br /> S=posted speed limit,off-peak 851h-percentile speed prior to work <br /> starting,or the anticipated operating speed in mph <br /> Maximum downstream taper length is 100 feet.See Section 6C.08. <br /> Chapter 6H—Typical Applications January 13,2012 <br /> Part 6—Temporary Traffic Control <br /> Temporary Traffic Control(Parts 1 &6)Page 194 of 320 <br />