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Callfornia 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 Spacing <br />Road Type 11 <br />Distance Setwaen SignsR' <br />A. l3 <br />C <br />Urban fo*epeed) - 25 mph or passe" <br />100 feel 100 feel <br />100 feel <br />Urban -more than 25 mph to 40 mph"' <br />250 feet 250 feet <br />250 feel <br />Urban4hkjm *9d) -mora than 40 mpW— <br />359 feel 350 feel <br />350 feet <br />Rural <br />500 feel 500 feet <br />500 feet <br />Expressway l Freeway <br />1,000 feel 1,500 feet <br />2,640 feel <br />t <br />" The column headings A, B, and C are lha dimensions shown in Figures 61-1-1 through 611-46. The A <br />dimension is the distance from the transition or point of restdcton to the first sign. The B dimension <br />is the distance between the first and second signs. The C dimension is the distance between the <br />second and third signs. (The "firs! stgn"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 upstream from the TTC zone.) <br />Posted speed limit, off -peals 85th -percentile speed prior to work starting, or other anticipated operating speed <br />in mph. <br />Table <br />Chapter 6H — Typical Applications <br />Part 6 — Temporary Traffic Control <br />Formulas for Determining Taper Lungth <br />Speetl(S) Taper Length. (L) in feta <br />WS2 <br />40 mph or less <br />L= <br />60 <br />45 mph or more <br />L= WS <br />Where: L = taper longth In feet <br />W = Width ofoffsetIn feel <br />S = posteSpeer:! limit, or off-peak 85th -percentile <br />speacrior to Work starting, or the anticipated <br />operatingspeed in mph <br />Page 1136 <br />November 7, 2014 <br />I <br />