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Califortua MU 1 CD 2014 Edition Page 1136 <br /> (FHWA's MUTCD 2009 Edition,including Revisions 1 &21 as amended for use in California) <br /> Table 6H-3. Recommended Advance Warning Sign Mimimtim Spacing <br /> Road Type Distance Between Signs** <br /> A B C <br /> Uebin+brrspe*-28'#t or less" 100 feet 100 feet 100 reet <br /> Urban-more than 25 mph to 40 mph"* 250 feet 250 feet 250 feet <br /> Urban*iyh=opsod)-more than 40 mph- 350 feet 350 feet 350 feet <br /> Rural 500 feet 500 feet 500 feet <br /> 'Expressway)Freeway 1;000 feet 1.500 feet 1 2,640 feet <br /> The column headings A,B,and C are the dimensions shown in Figures 61-1-1 through 6H.-46.The A <br /> dimension is the distance from the transition or paint 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'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;off-peak 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) Taper Length(L)in feet <br /> WSZ <br /> 40 mph or.less L <br /> 60 <br /> 45 mph or more 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 />