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California DW7CD20l%Edition Page 1136 <br /> (FBWA'oM[TCD2009Edition,asamended for use in California) <br /> oper L6� <br /> sppeg(S) Tiper'�efigth(L)In feet <br /> WSJ <br /> Ab tbpfi or 1qs5 <br /> 'Where;L <br /> W widih 9.1 060t In 101 <br /> S <br /> Table Taper Length Criteria for Temporary Traffic Control Zones <br /> (for 12feet Offset Width) <br /> Minimum Taper Length** <br /> Speed* for Width of Offset 12 feet(W) <br /> S Merging Shifting Shoulder Down <br /> (mph) L U2 U3 Stream <br /> (feet) (feet) (feet) (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 /> 40 320 160. 107 50 <br /> 45 540 270 180 50 <br /> 50 600 300 200 50 <br /> 55 660 330 220 50 <br /> 60 720 360 240 50 <br /> 65 780 390 260 50 <br /> 70 840 420 280 50 <br /> Posted speed limit,off-peak 85th-percentile speed prior to work starting,or the anticipated operating <br /> speed inmph. <br /> For other offsets use the following merging taper length formula for L <br /> For speeds of40mph Orless,L=WS2160 <br /> For speeds of45mph nrmore,L=VYS <br /> Where: L=taper length infeet <br /> VV=width o[offset infeet <br /> G=posted speed limit,off-peak 85m'pemanU|ospeed prior towork <br /> starting,orthe anticipated operating speed inmph <br /> Maximum downstream taper length is100feet.See Section OC.U8. <br /> Chapter 0B—Typical Applications January 13,2012 <br /> Part 6—Temporary Traffic Control <br /> Temporary Traffic Control(Parts 1 &0)Page 1Q4of320 <br />