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California MUTCD 2014 Edition <br />(FHWA's MUTCD 2009 Edition.inclnding Revisions 1 &2.as amended for use in California) <br />Table 6H-3.Recommended Advance Warning Sign Mtfli"UI~Spacing <br />Road Type Distance Between Signs~ <br />A B C <br />"~ro.~_n,f!i!/')~.~#Ae:':"25'rilph or lessu•.',1.00 reet-'1OCrteet 100 feel <br />Urban':more than 25 mph to 40 mph**-IC 250 feet 250 feet 250 feet <br />.Urban [~j~1=l-~l3ees)-more .than 40 mph"••,,.3$p'feef -350 feet ,,-350'feet <br />Rural 500 feet ~OOfeet SOOfeet <br />E~P'tesS)~\fIFieeway ,,1;000reet '1,SOlireet 2,64lffeel~: <br />•Spoad ntcQ?#:fa tg 1ia'crv"ocd "ythc bOgbtt!?V agoccl' <br />-The column headings A,B,and C are the -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.sign.The B.dimension;s the distance between the fitst and second signs.The C dimension is tl)e distance "between the <br />second and third signs.(The ''first srgn"is the sign in a three-sign series""(hafis"closest to the TIC <br />zone.The "third sign'!is the sign that is furthest upstream fronlthe TTC zone.) <br />*".Posted speed limit;ciff-peak 85th~percentile speed prior to work starting.or other anti'cipated operating speed <br />in mph. <br />Table6H-4.Formulas for Determining Taper Length <br />Speed(S)Taper Length (L)in feet <br />WS'40 mph orless L=--60 <br />45 mph or more L=WS <br />Where:L =taperlength in JeelW"width of offsel in feetS=posted speed limit,or off-peak 85111-percenlile <br />speed prior 10work starting,or the antiCipatedoperatingspeedinmph <br />" <br />Page 1136 <br />Chapter 6H -Typical Applications <br />Part 6 -Temporary Traffic Control <br />November 7,2014