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California MUTCD 2014 Edition Page 1137 <br />(FHWA's MUTCD 2009 Edition, including Revisions 1 & 2, as amended for use in California) <br />Table 9+4(M Tam Length Chleria for Temporary Traffic Control Zones <br />(for 12 feet Wset Wklh) <br />Speed' <br />S <br />Nnlnm Taper Ler r° <br />fm WIM of ChM 12 feet (IItJ <br />g <br />t <br />Shifting Shoulder <br />L12 I <br />(feet) (feel <br />.Dawn <br />Stream <br />20 <br />80 <br />40 27 <br />50 <br />25 <br />125 <br />63 42 <br />50 <br />30 <br />180 <br />90 60 <br />50 <br />35 <br />248 <br />123 82 <br />50 <br />40 <br />320 <br />160 107 <br />50 <br />45 <br />540 <br />270 180 <br />50 <br />50 <br />600 <br />300 200 <br />50 <br />55 <br />660 <br />330 220 <br />50 <br />60 <br />720 <br />360 240 <br />50 <br />65 <br />780 <br />390 260 <br />50 <br />70 <br />840 <br />420 28W,50 <br />75 <br />900 <br />450 300 <br />50 <br />- Posted speed limit, off peak 854percen6le 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 r <br />Where: L = taper length In feet <br />W = width of offset in feet <br />S = posted speed Imit, off-peak 85'b -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 Uraffic Control <br />November 7, 2014 <br />,�c <br />