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California MUTCD 2014 Edition Page 1136 <br />(FHWA's MUTCD 2009 Edition, including Revisions 1 & 2, as amended for use in Caltfmnnia) <br />Table 6H-3. Recommended Advance Warning Sign MieitnettliftSpacing <br />The column headings A, B. and C are the dimensions shown in Figures OH -1 through eH46. The A <br />dimension Is the distance from the transition or point or restriction to the first sign. The 8 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 'first sign' Is the sign in a three -sign series that Is closest to the TTC <br />zone. The 'third sign Is file sign that is furthest upstream from the TTC zone.) <br />Posted speed fimit, off-peak 85th -percentile speed prior to work starting, or other anticipated operating speed <br />in mph. <br />Table 61-1-4. Formulas for Determining Taper Length <br />Speed (S) Taper Length (L) in feet <br />w 12 <br />40 mph or less <br />45 mph or more <br />L= WS <br />Where: L = taper length In feel <br />W = width of offset in feet <br />5 = posted speed limit, or off-peak 85th -percentile <br />speed prior to work starling, or the anticipated <br />operating speed In mph <br />Cbapter 6H —Typical Applications <br />Part 6 — Temporary Traffic Control <br />November 7, 2014 <br />