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California MUTCD 2012 Edition Page 1136 <br /> (FHWA's MTJTCD 2009 Edition,as amended for use in California) <br /> `u��i��;C���d t.�a�e�r�Lria�obi'• ��d�¢'►�i�ti���.p��e6`��i�,�j�EG'n <br /> s00(5) Tapee Length w(n 4ee'1 <br /> Ah.rnpfi or loss L= 4V5 <br /> '45'Tpli or ploi 9 L VO <br /> Where,L =fapet lepglrt rn feel <br /> W=svidih of offset in feet <br /> S �fasted spEed fmil,,or oH•peak&5,ih•perceNi(e <br /> spe'e'd prior fo i'+orkslarting,of the anlia Aled <br /> operdiifg speed iti mplt <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 ®own <br /> -T <br /> (mph) L L12 L13 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 /> 7 1 840 420 1280 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 /> Tpmnom nt Traffic C nntrnl tonrfe 1 2.Al 0.,,,.,4nA,.4:0nn <br />