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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 />LO <br />Table 6H-3: Recommended Advance Warning sign Minim Spacing <br />Road Type <br />Distance between Sfgns�* <br />A I6 <br />C <br />Urban+ewepaad}-25 mphor ILW- <br />100feel 10ofeel <br />100 feel <br />Urban - more than 25 mph to 40 mph"" <br />250 feel 250 reel <br />250 feel <br />Urban 4irylwp***-more 140 mph•" <br />350 feel 350 reel <br />350 feet <br />Rural <br />500 feet 500 feet <br />500 feet <br />Expressway I Freeway <br />'1,000 feel 1,500 feel <br />2,640 feet <br />" The column headings A, B. and Care the dimensions shown in Figures 61-1-1 through 6H-46. The A <br />dimension is the distance from The transition or point of reshicHon to file first sign. The B dimension <br />I.; the distance behaeen the first and second signs. The C dimension is the distance between the <br />second and third signs. (The "first swim" Is the sign In a three -sign series That is closest to the TTC <br />zone. The "third sign" is the sign that is furthest upstrearn from fire TTG zone.) <br />Posted speed limit, off-peak 85th-percenh7e speed inner to work sterling, or other anticipated operating speed <br />in mph. <br />Table 6H-4: Formulas for Defegnining Taper Length <br />Speed (S) <br />Taper Lengtlt.(L) in feet <br />WS - <br />40 mpil or less <br />L= <br />60 <br />45 mph or more <br />L= WS <br />Whele; L = [aper length in feet <br />W =width otoffsetln feel <br />S = postepeed limit, or off-peak 85th -percentile <br />speecirfor to work starting, or the anticipated <br />operaling. speed in mph <br />Page 1136 <br />Chapter 6H — Typical Applications November 7, 2014 <br />Part 6 — Temporary Traffic Control <br />