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California MUTCD 2014 Edition Page 1130 <br />(EHWA's MUTCD 2009 Edition, Including Revisions 1 & 2, as amended for use in California) <br />Table 6F1-3. Recommended Advance Warning Sign Nninim" Spacing <br />Road Type <br />A <br />Distance Between Signs" <br />B <br />C <br />Urban4lowepee0- 25 mph or less"' <br />100 feel <br />100 feel <br />100 reel <br />Urban - more than 25 mph to 40 mph"' <br />250 feel <br />250 feet <br />250 reel <br />Urban4kiyprpwi}-more than 40 mph"' <br />350 feet <br />350 reel <br />350 feel <br />Rural <br />500 feel <br />500 feet <br />500 feet <br />Expressway r Freeway <br />1,000 Met <br />1.500 feet <br />2,640 <br />" The column headings A, B, and C are the dfinenstode shown in Figures ON -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 between the first and second signs, The C dimension is the distance betvreen the <br />second and third signs. (The 'first sign" Is the sign in a three -sign series [fiat is closest to the TTG <br />zone. The "third sign" is the sign that is furthest upstream from Ilia TIC zone.) <br />Posted speed limit, off-peak 85th -percentile speed prior to work starting• or other anticipated operating speed <br />in mph. <br />Table 6H-4. Formulas for determining Taper Length <br />Speed (8) Taper Length (L) in feet <br />Ws2 <br />40 mph or less <br />L= — <br />so <br />45 mph or more <br />L= WS <br />Where: L =taper length In feet <br />W = width of offset in feet <br />S = posted speed limit, or off-peak 85th -percentile <br />speed prior to work starting, or the anticipated -• <br />operating speed in mph <br />Chapter 6H – Typical Applications November 7, 2814 <br />Part 6 – Temporary Traffic Control <br />