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California MUTCD 2014 Edition <br />(FHWA's MUTCD 2009 Edition, including Revisions 1 &2, as amended for use fn California) <br />Table 6H-3. Recommended Advance Warning Sign Min! Ammi Spacing <br />Road Type <br />Distance Between Signs' <br />B C <br />Page 1136 <br />500 feet - 500 feet 500 et - - - <br />E.oresswaylFreeway 1,000 feet 1,500 feet 1 2,640 feet <br />The column headings A, B. and C are the dimensions shoo in Figures 6H-1 through 61-1-46. The A <br />dimension is the distance from the transition or point of restriction to the first sign. The B dimension <br />Is the distance behveen the first and second signs. The C dimension is the distance between the <br />second and third signs. (The Must sign" 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-peak 85th -percentile speed prior to work starling, or other anticipated operating speed <br />in mph. <br />Table 61-1-4. formulas for Determining Taper Length <br />Speed (6) Taper Length (L) In feet <br />WS2 <br />40 mph or less <br />L= 80 <br />45 mph or more <br />L= WS <br />Where: L = taper length In feet <br />W = width of offset In feet <br />5 = posted speed limit, or off-peak 65th percentile <br />speed prior to work starting, or the anticipated <br />operating speed in mph <br />Chapter 6H —Typical Applications November 7, 2014 <br />Part 6 — Temporary Traffic Control <br />