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California MDTCD2Ol2Edition <br /> Page 1136 <br /> (FHWA'uMUT[D2N09Edition,asamended for use in California) <br /> � <br /> -Table H-4 6m T <br /> � er Lding | <br /> 'w»ero L �_ <br /> W_- <br /> o = <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 L/3 Stream <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 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 0f4Omph orless,L=VY82160 <br /> For speeds nf45mph-or more,L=VVS <br /> Where: L=taper length infeet <br /> VV=width nfoffset iDfeet <br /> G=posted speed limit,off-peak 85th-nonmnU|ospeed prior towork <br /> starting,o[the anticipated operating speed inmph <br /> Maximum downstream taper length is1OOfeet.See Section OC.O8. <br /> Chapter 6H Typical January 13,2012 <br /> Part 6-Temporary Traffic Control <br /> Temporary Traffic Control(Parts 1 &6)Page 1O4of320 '� <br />