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California MUTCD 2014 Edition <br />(FHWA's MUTCD 2009 Edition, including Revisions 1 & 2, as amended for use in Califonda) <br />Table 6H-4(CA). Taper Length Criteria for Temporary Traffic Control Zones <br />(for 12 feet Offset Width) <br />Minimum Taper Length" <br />H�feet) (feet) (feet) �� (feetp" -- <br />�1 cn <br />Page 1137 <br />N <br />ou <br />Yu <br />25 <br />125 <br />63 <br />42 <br />50 <br />30 <br />180 <br />90 <br />60 <br />50 <br />35 <br />245 <br />123 <br />82 <br />50 <br />40 <br />320 <br />160 <br />107 <br />50 <br />45 <br />540 <br />270 <br />180 <br />50 <br />50 <br />600 <br />300 <br />200 <br />50 <br />55 <br />660 <br />330 <br />220 <br />50 <br />60 <br />720 <br />360 <br />240 <br />50 <br />65 <br />780 <br />390 <br />260 <br />50 <br />70 <br />840 <br />420 <br />280 <br />50 <br />75 <br />900 <br />450 <br />300 <br />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-peak 851a -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 0H —Typical Applications November 7, 2014 <br />Part 6 — Temporary Traffic Conbral <br />