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California MUTCD 2014 Edition(FHWA's MUTCD 2009 Edition,including Revisions 1 &2;as amended for use in California) <br />Table 6H.3.Recommended Advance Warning Sign .MiRil'l'l~RtSpacing <br />Road Type Distance Between Signs- <br />A B C <br />'Ur.~9:nHe"/'.~.e~~}':"2S"ihptl"or less •••.1.00 feet 100 feet ..100 feet <br />Urban ~more than 25 mph to 40 mph*'*250 feet 250 feel 250 feet <br />.~rban (~i,gI:l-~~eeel1.more.than 40 mph••.•,.350 feel .~_59fe~1 -"350"reet . <br />Rural 500 feel 500 feet 500 feet <br />f5~pl••SSW!'yJFieewaY 1;000 reel 1,500 feel 2,640 feet <br />•Spond sg'egP7)fa '*"'8'000';991 thrUmhjght'pt'pgcee!lh <br />.•.•The column headings A,B.and Care Ihe dimensions "Shown in Figures 6H~1 through 6H46 ..The A <br />dimension IS the distance from the transition or point of restriction to the.first.slgn.The S.dimensionisthedistancebetweenthefil'St and second signs.The C dimension is the distance "between the <br />se<:ond and third signs.(The "first sign"is the sign in a three-sign sei'ies-"(hat'is closest to the TIC <br />zone.The "third sign'!is the sign that is furlhest upstream from-the TTC zone.) <br />•..•"Posted speed limit;off..peak S5th~pei'centHe:speed prior to work starting,-orother anticipated operathlQ speed <br />inrnph. <br />Tabie6H-4.Formulas for Determining Taper Length <br />Speed (S)Taper Length (L)in feet <br />WS'40 mphor.less L=--60 <br />45 mph or more L=Ws <br />WI,ere:L ,,;tapS,length inieel <br />W '"width of offsetin feelS=posted speed limit,or off.peak 85th-percentile <br />speed prior to work starting.or the antiCipatedoperatingspeedinmph <br />" <br />Page 1136 <br />Chapter 6H -Typical AppltcalionsPart6-Temporary Traffic Control <br />November 7,2014