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Calitornia MUTCD 2014 Edition(FHWA's MUTeD 2009 Edition,including Revisions 1 &2;as amended for use in Califomia) <br />Table 6H.3.Recommended Advance Warning Sign MiflhlUlfl'l,Spacing <br />Road Type Distance Between Signs~ <br />A B C <br />;l~r~~~~e/i.A?~9A1f:.25"itfpl1 or less6H.1,00 feet 1WreEit '{OO feet <br />Urban.more than 25 mph to 40 mph-*250 feet 25~feel 250 feet <br />..~fban (i;,i~~'8~88ell-more than 40 mph~""350reet 359 feet 350reet <br />Rural 500 feet 500 feet 500feet <br />'-~r~s.SWflyJFreeway 1;000reel .1;500Ieel 2,6'40Ieet <br />.•Spirt carcass;t to dt:tPfm1ac1 bp'''o Ngb!tq'cgos£!, <br />••The column headings At B.and C are the dimensions shown in Figures 6H-1 Ihrougfi 6H.46.'The A <br />dimension is the distance from the transition or point of restriction to the.first,slgn.The B.dimensionisthedistancebetweenthefi(st and second signs.The C dimensio"n ist~e distance belWeen the <br />second and third signs.(The "first sign"is the sign in a !hree~sign series."lhafis.closest to the TTC <br />zone.The "third sign"is the sign that is furthest upstream frorrrthe nC zone:) <br />,..•.Posted speed limit;off-peak 65th~percentile speed prior to work slarting,Of other anticipated operating speed <br />in mph. <br />Table6H~4.Formulas for Determining Taper Length <br />Speed (S)I Taper Length (L)in feet <br />WS'40 mph or.less L=--60 <br />45 mph or more L=WS <br />Where:L =laper length inieelW"width of offset in feetS=posted speed limit,or off-peak 85th-percentilespeedpriortoworkstarting,or the antiCipatedoperatingspeedinmph <br />.~. <br />Page 1136 <br />Chapter 6H -Typical Appltcations <br />Part 6 -Temporary Traffic Control <br />November 7,2014