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California MUTCD 2014 Edition <br />(FHWA'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 />Harney <br />Lane <br />Lower <br />Sacramento <br />Road (within <br />City of Lodi <br />limits) <br />Lower <br />Sacramento <br />Road (SJC <br />limits) <br />Minimum Taper Length** <br />Speed* for Width of Offset 12 feet (111 <br />S Merging Shifting Shoulder I Down <br />(mph) L U2 I U3 I Stream <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 />inn <br />50 <br />[rt <br />Page 1140 <br />60 720 360 240 50 <br />65 780 390 260 50 <br />70 840 420 280 50 <br />75 900 450 300 50 <br />* - Posted speed limit, off-peak 851h -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=WS2l60 <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 851h -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 November 7, 2014 <br />Part 6 — Temporary Traffic Control <br />50 <br />600 <br />300 <br />200 <br />50 <br />55 <br />660 <br />330 <br />220 <br />50 <br />60 720 360 240 50 <br />65 780 390 260 50 <br />70 840 420 280 50 <br />75 900 450 300 50 <br />* - Posted speed limit, off-peak 851h -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=WS2l60 <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 851h -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 November 7, 2014 <br />Part 6 — Temporary Traffic Control <br />