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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 California) <br />aa. <br />Table 6H-3. Recommended Advance Warning Sign MiWwntm Spacing <br />" The column headings A, 8, and C are the dimensions shown in Figures 6H-1 through BH -40. The A <br />dimension is the distance from the transition or point of 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 star' In a three -sign series that is closest to the TTG <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 sterling, or other anticipated operating speed <br />in mph. <br />Table 61-1-4. Formulas for Determining Taper Length <br />Where: L =taper length in feet <br />W =width of offset in feet <br />S = posted speed limit, or off-peak 85th-percentlle <br />'to- 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 />Distance Between Signs" <br />Road Type <br />A <br />g <br />C <br />Urban41ewmpeed}- 25 mph or less'" <br />100 feet <br />100 feel <br />100 feet <br />Urban - more than 25 mph to 40 mph"" <br />250 feet <br />250 feet <br />250 feet <br />Urban 4W*,*epp»+F-more than 40 mph"' <br />350 reel <br />350 feet <br />350 feet <br />Rural <br />500 feet <br />500 feet <br />500 feet <br />Expressway I Freeway <br />1,000 feet <br />1.500 feet <br />2,940 reel <br />" The column headings A, 8, and C are the dimensions shown in Figures 6H-1 through BH -40. The A <br />dimension is the distance from the transition or point of 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 star' In a three -sign series that is closest to the TTG <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 sterling, or other anticipated operating speed <br />in mph. <br />Table 61-1-4. Formulas for Determining Taper Length <br />Where: L =taper length in feet <br />W =width of offset in feet <br />S = posted speed limit, or off-peak 85th-percentlle <br />'to- 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 />