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California MUTCD 2012 Edition <br /> (FHWA's NMTCD 2009 Edition,as amended for use in California) Page 1136 <br /> .4d IbPfi or less <br /> 60 <br /> ,51q..SOeqd 1161,or.off-peak 85th-per6bntile <br /> Table 6H-4(CA).Taper Length Criteria for Temporary Traffic Control Zones <br /> (for 12 feet Offset Width) <br /> Minimum Taper Length- <br /> Speed* for Width of Offset 12 feet(W) <br /> S Merging Shifting <br /> (mph) Shoulder Down <br /> St <br /> L U2 U3 trearn <br /> feet feet feet <br /> 20 8-0 40 <br /> 25 125 63 <br /> 30 180 <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 /> 1 70 8,40 420 280 50 <br /> � <br /> 'Posted speed limit,off-peak speedprior ho�nr n�d�n nr�e <br /> sPood�0ph. ' — ^ —= anticipated operating <br /> For other offsets use the following merging taper length formula for L: <br /> For speeds of4Omph nrless,L=VVG900 <br /> For speeds of45mph nrmore,L=VYG <br /> VYho0a: L=taper length iOfeet <br /> VY=width ofoffset/Ufeet <br /> 8=posted speed limit,off-peak 85th-ponmDti/aspeed prior 0owork <br /> starting,orthe anticipated operating speed inmph <br /> Maximum downstream taper length is1UOfeet.See Section 8C.U8. <br /> Chapter 6H Typical Applications <br /> Part 6—Temporary Traffic Control January l3'2Ol2 <br /> Temporary Traffic Control(Parts 1 &0)Page 1&4of32O <br />