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California MUPCD 2014 Edition Page 1136 <br />(EH)VA's =M Edition, including Revisions 1& 2, as amendedfor use in California) <br />Table 6H-3. Recommended Advance Warning Sign #AWhn% A. Spacing <br />Road Type <br />A <br />Distance Between Signs" <br />B <br />C <br />UMen Qss epesd}-25 mph or less— <br />100 fcet <br />1001ed <br />t00mat <br />Urban - more than 25 mph to 40 mph"' <br />250 met <br />250 feet <br />250 feet <br />Urban(FilirNwif- more Man 40 mph" <br />350 feet <br />350 feet <br />350 feet <br />Rural <br />Snnfeel <br />son het <br />Wn Rwl <br />Expressway/Freeway <br />1,000 feet <br />1,500 fest <br />2,840 feet <br />The column headings A, B. and C are the dimensions shown in Figures e11-1 through 61 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 />secontl and thirdsigns- (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 TTC zone.) <br />^' Posted speed limit, oR-peal, 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 (S) <br />Taper Length (L) in feet <br />WS' <br />40 mph or less <br />L= <br />- <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, oroff-peak85th-percenhe <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 />