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California WTCD 2012 Edition Page 1136 <br /> (FHWA's MUTCD 2009 Edition,as amended for use in California) <br /> B.abIE:61-1-4. �`O'rrriulas �ekdlt iInIng paper <br /> Speed(5) Tape`Length(L)fn feet <br /> WSJ <br /> A4rnttior(ess <br /> '45hpph,orfnor-a Lo Nis <br /> °Where;L =fapeflkQtf M feet <br /> W=widib al bffset iri feet <br /> S �p.s ed'OU&d f mil,4r pf1-peak 85th-percenlife <br /> spe�t�ppior(o iiorkslartfng,of the aillicipated <br /> operdlii��s`'Pes¢iti mpti - <br /> Table 6H-4(CA).Taper Length Criteria for Temporary Traffic Control Zones <br /> (for 12 feet Offset Width) <br /> Minimum Taper Length** <br /> Speed* for Width of Offset 12 feet(W) <br /> S Merging Shifting Shoulder Down <br /> (mph) L L12 L13 Stream <br /> feet feet feetfeet)** <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 /> -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=WS2160 <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-pEek 85th-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(Pa Is 1 &6)Page 194 of 320 <br />