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California MUTCD 2014 Edition <br />(FHWA's MUTCD 2009 Edition, including Revisions 1 & 2, as amended for use in California) <br />Table 6H-3. Recommended Advance Warning Sign Mieirmm+Spacing <br />Road Type <br />p <br />Distance Between Signs" <br />B <br />C <br />Urban jbw.MwA*- 25 mph or less°"" <br />100 feel <br />1001eet <br />100 feet <br />Urban -mare than 25 mph to 40 mph— <br />250 feet <br />250 feel <br />2501eet <br />Urbane -more than 40 mph'"' <br />350 feet <br />350 feet <br />350 feet <br />Rural <br />500 feel <br />SOO fee[ <br />500 feet <br />Expressway r Freeway <br />11000 feet <br />1.500 feel <br />2,040 feet <br />The column headings A, 8, and C are the dimensions shown in Figures 6H•1 through 61-1-46. 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 sign in a three -sign series that is closest to the TTC <br />zone. The "third sign" is the sign that is furthest upstream from the TfC zone.) <br />Posted speed limit, off-peak 85th•parcentile speed prior to work starting, of other anticipated operating speed <br />in mph. <br />Table 61-1-4. Formulas for Deter_%ming Taper Length <br />Speed (S) <br />Taper Length (L) in feet <br />ws� <br />40 inphor tests <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 />TO speed prior to work starting, or the anticipated <br />operating speed in mph <br />Page 1_136 <br />Chapter 6H - Typical Applications November 7, 2014 <br />Part 6 - Temporary Traffic Control <br />