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California MUTCD 2014 Edition Page 1136 <br />(F]34✓A's stLiTM 2009 Edition, including Revisions 1 & 2, as amended for use in Califovtia) <br />Table 6H-3. Recommended Advance Warning Sign Mininitim Spacing <br />Road Type <br />A <br />Distance Between Sli <br />B <br />c <br />Urban Nsssps.0-25 mph or less^ <br />100feat <br />looked <br />toofnit <br />Urban - more than 25 mph to 40 mph"' <br />250 test <br />250 teet <br />250 feet <br />Ilrban(higNspaso-mare than 40 mph"' <br />350 feet <br />350 kat <br />me feet <br />Rural <br />Son fear <br />Sno hal <br />Sfln@et <br />apreaswsY f Freeway <br />1,000 feet <br />1150ofest <br />2,690 feet <br />The column headings A, B, and C are the dimensions shown in Figures 611-1 through 61-146. 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 between the <br />second and third signs_ (The'Yrst sign" is the sign in a three sign series Nat is closest to the TTC <br />zone. The -tird sign' is the sign that is furthest upsVeam from the TTC zone.) <br />^' posted speed limit, off-peak 65th -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 (S) <br />Taper Length (L) in feet <br />WS, <br />40 mph or less <br />L= — <br />60 <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, 2014 <br />Part 6 —Temporary Traffic Control <br />