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California MUTCD 2014 Edition Page 1136 <br />(FHWA's MUTCD 2009 Edition, including Revisions 1 & 2, as amended for use in California) <br />Table BH -3. Recommended Advance Warning Sign Min9mmm Spacing <br />Distance Between <br />Road Type A B -- <br />Rural - ---- II 500 feet I 500 feet I 500 feet <br />rxnressvav f Freeway I I 1,000 feel 1,500 feel 1 2,640 feel <br />'• The column headings A, B. and Cate 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 0 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 -slim 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 -percentile speed prior to work starting, or other anticipated operating speed <br />in mph. <br />Table 614-4. Formulae for Determining Taper Length <br />Speed (S) <br />Taper Length (L) in feet <br />WSz <br />40 mph or less <br />L= <br />80 <br />45 mph or more <br />L= WS <br />Where: L =toper length in feel <br />W = width of offset in feet <br />S = posted speed limit, or off -p" 05th -percentile <br />speed prior to work starting, or the anticipated <br />operating speed in mph <br />Chapter GH - Typical Applications November 7, 2014 <br />Part 6 - Temporary Traffic Control <br />