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California MUTCD 2014 Edition <br />(FHWA's MUTCD 2009 Edition,including Revisions 1 &2,as amended for use in California) <br />Table 6H.3.Recommended Advance Warning Sign MiRitlUlfl't'Spacing <br />Road Type Distance Between Signs" <br />A B C <br />'~r~~n{!e/;..!!~.~~~r.,2!fitif:iliorlessh•,1.00 feet fob feel rOO reet <br />Urban -more than 25 mph to 40 mphl,-i-k 250 feet 250 feet 250 feet <br />.urban !!;Iig1;l"Sfj8SEl)~more~han 40 mph••.•350 feel 350 feet '350 reet <br />Rural 500 feet ~OOfeet 500 feet <br />.'E~,:it~s~9jFreeway'.1.000 reel 1,500 feel 2,G4frfeet. <br />•.SpsM n'oass)h hg db*ctmiXrl tv tho bight:"~282Ccy <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 8.dimensionisthedistancebetweenthefirstandsecondsigns.The C dimension is t~e distance "betweenthe <br />second and third signs.(The "first sign"is the sign In a Ihree.slgn se"ries"lhat'is"closest to the TIC <br />zone.The "third sign"is the sign that is furthest upstream froillthe TIC zone.) <br />••.•••Posted speed limit;6ff.peak 85th~percentne speed prior to work slaTting,or other anticipated 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 or.1ess L=--60 <br />45 mph or more L=WS <br />Where:L =taper length in feel <br />W '"width of offset .infeetS=posted speed limit,or off-peak 85tll-percentile <br />speed prior to work starling.or the anticipatedoperatingspeedinmph <br />," <br />Page 1136 <br />Chapter 6H -Typical Applications <br />Part 6 -Temporary Traffic Coutrol <br />Novernher 7.2014