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FABLE A <br /> MINIMUM RECOMMENDED DELINEATOR AND SIGN PLACEMEN T <br /> Table A-1 <br /> Taper Length Criteria for Temporary Traffic Control Zones <br /> rShoulder <br /> ging Taper L MINIMUM <br /> ting Taper 1/2 L Minimum Taper 1/3 L Minimum <br /> Two-Way Traffic Taper 100 feet Maximum <br /> Downstream Tapers <br /> (Use is optional) 100 feet Minimum <br /> Formula for Taper Length `L' <br /> L=Ws2 (40 mph or less) L=WS (45 mph or greater) <br /> 60 <br /> L =Taper Length in feet <br /> W=Width of Offset in feet <br /> S = Speed in mph <br /> Table A-2 <br /> Suggested Advance Warning Sign Spacing <br /> Distance Between Signs <br /> Road Type in Feet <br /> S <br /> Urban - 25 mph or less 200 <br /> Urban - 30 mph or more <br /> Rural <br /> Expressway/Freeway ��15�00000 � <br /> Table A-3 <br /> Taper Length and Buffer Space <br /> Use in Typical Applications Diagrams <br /> Length of Taper V in Feet Longitudinal Buffer Space <br /> =Hour" <br /> Speed in Length of <br /> Width of Offset** Miles Buffer Space <br /> 11 Feet 12 Feet per Hour* in feet <br /> 20 73 80 20 35 <br /> 25 115 _ 125 25 -----_55---- <br /> 30 165 _ 180 30 85 <br /> 35 225 245 35 120 <br /> 40 293 320 40 170 <br /> 45 495 540 45 220 <br /> 50 550 600 50 280 <br /> 7-s-5-- 605_ 660 55 335 <br /> --- <br /> 60 - <br /> 720 -- <br /> _ 60 415 - <br /> _65 715 - — 780 <br /> _______60 <br /> - -- 770 - --65 485 <br /> 840 70 5 <br /> Posted speed, off-peak 85th percentille speed prior to starting;_or <br /> the anticipated operation speed. <br /> **for other offset widths, apply the formula in table A-1. <br /> Xi <br />