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California MUT CD 2014_ Edition Page 1136 <br />(FHWA's MUTCD 2009 Edition, including Revisions 1 & 2, as amended for use in California) <br />Table M-3. Recommended Advance Warning Sign *Whnydtvr Spacing <br />Road Type <br />A <br />Distance Between Signs`" <br />B <br />Urbanite speed) 25 mph or less' <br />100 feet <br />100 feet <br />too feet <br />Urban - more than 25 mph to 40 mph— <br />250 feet <br />250 feet <br />250 feet <br />Urbanmore than 40 mph— <br />350 feet <br />350 feet <br />350 feet <br />Rural <br />500 feet <br />500 feet <br />500 feet <br />Expressway r Freeway <br />1,000 feet <br />1.500 feet <br />2,640 feet <br />" The column headings A, 8, and C are the dimenswns shown in Figures 81-1-1 through 61-1-48. 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 batmen the <br />second and third signs. (The "First sign" is the sign in a throe -sign series that is closest to the TC <br />zone. The "third sign" is the sign that is furthest upstream from the TTC zone.) <br />Posted speed limit, off-peak 05th -percentile speed prior to work starting, a other anticipated operating speed <br />in mph. <br />Table 61-1-4. Formulas for Determining Taper Length <br />Speed (S) <br />40 mph or less <br />46 mph or more <br />Where: L =taper length in feet <br />W =width of offset in feet <br />_ 5 = posted speed limit, or off-peak 85th-percentile- <br />TI-. 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 />