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Califomia MUTCD 2012 Edition Page 1136 <br /> (FHWA's MUTCD 2009 Edition,as amended for use in California) <br /> vablG�ln�. AoV'r��Ulas'stsracer'lriictin .p perLt �gi6a <br /> 4ppi(s) Taper Length(L)(n feet <br /> A[I,rr[srl or hss L- . BD <br /> lSh;mPh.bfptar0 Lo Ud5 <br /> Whe{e;L =fapeP(englri In feel <br /> Nl=widih of(AM[A feet <br /> S Qgsk's speed limi(qr ofl peak,Bsth erceNifa <br /> spe6'pyror Id vibrk&-tarll6g,of the anpticipated <br /> opetdling speed i(i mpli <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 U2 L13 Stream <br /> feet feet feet feet <br /> M70 <br /> 80 40 27 50 <br /> 125 63 42 50 <br /> 180 90 60 50 <br /> 245 123 82 50 <br /> 320 160. 107 50 <br /> 540 - 270 180 50 <br /> 600 300 200 50 <br /> 660 330 220 50 <br /> 720 360 240 50 <br /> 780 390 260 50' <br /> I840 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 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(Parts 1 &6)Page 194 of 320 <br />