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California MUTCD 2012 Edition <br /> (FAA's MUTCD 2009 Edition,as amended for use in California) <br /> Page 1136 <br /> 'Table e�� . t°�rreiulas oo Cdet'irorijti�t .9. per L�i��'iCr <br /> Speed(s) Taper Length.L dtt feet <br /> Ah..innti or less <br /> ws <br /> R5 �0 <br /> 'rnptt.or more .. <br /> Where;L =rapettepglilIAfeet <br /> W offset fn r@et <br /> 5 =p9sksd,stiEe�ltmil.9r6ff•peae <br /> spee lPlio�(d il;IAstartfng,qr the anka5lh•peCcenttfticipafed <br /> ope�lidg speed i�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 <br /> (mph) Merging S 2ing Shoulder <br /> L Down <br /> 20 feet feet feet Stream <br /> 80 40 feet** <br /> 25 12527 50 <br /> 30 180 63 42 50 <br /> 35 245 90 60 50 <br /> 40 320 123 82 50 <br /> 45 160 107 <br /> 540 . 50 <br /> 50 600 270 180 50 <br /> 55 660 300 200 50 <br /> 60 720 330 220 50 <br /> 65 780 360 240 50 <br /> 70 840 390 .260 50 <br /> 4�0 280 50 <br /> -Posted speed limit,off-peak 85th-percentile speed prior to work startingor the anticipated operating <br /> speed in mph. , pated o p 9 <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 <br /> Part 6—Temporary Traffic Control <br /> Temporary Traffic Control(Parts 1&6)Page 194 of 320 January 13,2012 <br />