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California MUPCD 2014 Edition Page 1136 <br />(11147A's IVIIJTCD 2009 Edifion, including Revisions 1 & 2, as amended for use in California) <br />Table 6H-3. Recommended Advance Warning Sign Mi ii mim Spacing <br />Road Type <br />Taper Length (L) in feet <br />Distance Between Signs" <br />WV <br />A B <br />C <br />UdanQeweped}-25 mph or less*** <br />100fast <br />Mieet <br />100fest <br />Urban - more than 25 mph to 40 mph"' <br />250 met <br />250 feet <br />250 feet <br />Urbsn(higlim Wk -more than 40 mph"' <br />350 feet <br />350 met <br />350 feet <br />Rural <br />500 feet <br />500 seat <br />Wo feet <br />Expressway f Freeway <br />1,000 feet <br />1,500 feet <br />2,1140 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 />serend antl thirdsigns. (The "first sign- is the sign in a three -sign series that is closest to the TTG <br />was. The'third sign' is the sign that is furthest upstream tram the TTC zone.) <br />Posted speed limit, off-peak 85th -percentile speed prior to word starting, or other anticipated openong speed <br />in mph. <br />Table 61-1-4. Formulas for Determining Taper Length <br />Speed (S) <br />Taper Length (L) in feet <br />WV <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 851h -percentile <br />speed prior to work starting, or the anticipated <br />operating speed in mph <br />Chapter 6H —Typical Applicafi ons November 7, 2014 <br />Part 6 —Temporary Traffic Control <br />