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CaUfornfa MUT CD 2014 Edition <br />(PHWA's MUTCD 2009 Edition, including Revisions 1 & 2, as amended for use in California) <br />Table 6H-4(CA), Taper Length Criteria for Temporary Traffic Control Zones <br />(for 12 feet Offset Width) <br />Minimum Taper Length" <br />-(feed (feet) — fejt)— (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 />Page 1137 <br />40 <br />320 <br />16U <br />7u/ <br />nu <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 85s -percentile speed prior to work starting, or the anticipated operating <br />speedin 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 850 -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 OH — Typical Applications November 7, 2014 <br />Part 6 — Temporary Traffic Control <br />