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California MUTCD 2014 Edition Page 1136 <br />(FHWA's MUTCD 200g Edition, including Revisions I & 2, as amended for use in California) <br />r.. <br />Table GH -3. Recommended Advance Warning Sign Mirrinnn+rSpacing <br />Road Type <br />A <br />Distance Between Signs" <br />B <br />C <br />bmpr less— <br />Urban+w�epea8)- 25h o <br />100 feet <br />100 feet <br />100 feet <br />Urban - mare than 25 mph to 40 mph"' <br />250 feet <br />250 feel <br />250 feel <br />Urban (11@0 -0 -more than 40 ri <br />350 feet <br />350 feet <br />350 feet <br />Rural <br />500 feel <br />500 feel <br />500 feet <br />Expressway I Freeway <br />1,000 feet <br />1.500 feel <br />2,640 feet <br />" The column headings A, B. and C are the dimensions shown in Figures 611-1 through 8H46. The A <br />dimension is the distance from the transition or point of restriction to the first sign. The 6 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 "fust sign" is the sign in a three -sign series that is closest to the TTG <br />zone. Tile'Otird sign" is the sign that is furthest upstream from the TTC zone.) <br />Posted speed limit, tiff -peak 85th -percentile speed prior to work starting, or other anticipated operating speed <br />in mph. <br />Table 6H4. Formulas for Determining <br />er Length <br />Speed (S) <br />Taper Length (L) in feet <br />ws$ <br />40 irrph or less <br />t - 60 <br />45 mph or more <br />L= WS <br />Where.' L = taper length in feet <br />VV = width of offset in feet <br />S = posted speed limit, or off-peak 85th -percentile _ <br />N`, speed prior to work starting, or the anticipated <br />operating speed in mph <br />Chapter 6H - Typical Applications November 7, 20I4 <br />Part 6 -Temporary Traffic Control <br />