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California MUTCD 2014 Edition Page 1130 <br />(FHWA's NIUTCD 2009 Edition, Including Revisions 1 & 2, as amended for use in California) <br />Table C&I-3. Recommonderl Advartr:w V111�uair� I,tl :.;`,.::.;.<,;:,' <br />Road Type <br />Distance lde%Ween Sirens" <br />A <br />B <br />I C <br />-25 mph of less... <br />Ion feet <br />100 feet <br />100 feet <br />unccn - mole than 25 mph to 40 mph"' <br />250 feet <br />250 feet <br />250 feet <br />UPoan{A{g4opa*4-more than 40 ni is <br />350 feel <br />350 feel <br />350 feet <br />Rural <br />500 feet <br />500 feet <br />500 feet <br />Express.vay I Freeway <br />F 1,000 foot <br />1,500 feet <br />2,640 feet <br />" The colunw headings A, B, and C are the dimensions shovm in Figures 6fb1 through 611-46- The A <br />dimension is Ino distance from the transition or point of restriction to the first sign. The B dimension <br />is the dislance hePAeen 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 (hrea-sign series that is closest to the TTC <br />zone. The "third sign' is the sign that is furthest upstream from the Ti C zone.) <br />Posted speed limit, off-peak 05lh-percenlile speed prgr to v k starting, or olhe- anticipated operating speed <br />in mph. <br />Speed (S) Taper Length (L) in feet <br />40 mph or less <br />WFC <br />L= — <br />60 <br />45nipliormOra <br />L= WS <br />Where: L = leper length in feel <br />W =width of offset In feet <br />5 =posted speed limit, or off-peak 851h,percenlile <br />speed prior to work starting, or the anticipated <br />operating speed in mph <br />Chapter GH –Typical Applications November 7, 2014 <br />Par16 – Tempm'aty Traffic Craft of <br />