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Feb.8, 1983 BIKEWAYS <br /> -16- <br /> • <br /> 150 - l <br /> 140 <br /> 130 <br /> N120 <br /> 110 <br /> 100 <br /> 2 <br /> o cv plot CI„f: V tan8 +f <br /> 90 _O I, .."4 gR 1 — f tan A <br /> ° 2S + Where: V= velocity, ft./sec. <br /> o tY, t./sec. <br /> ct 80 'a'h• g=acceleration due to gravity, ft./sec.2 <br /> R = radius of curvature, ft. <br /> W a`,, L • <br /> ya f=coefficient of friction on <br /> U70 --- E l y dry pavement= 0.4 <br /> E (based on E 200 lean) <br /> -. E tan 8= superelevation rate, ft./ft. <br /> 20'?'•P.h, <br /> 50 <br /> 40 I <br /> 30 V 15 rn•p.h, <br /> 20 <br /> V= 10 m.p.h. <br /> 10 <br /> CNI O p p O0 .-.4 O N <br /> O O O O C 6 <br /> O <br /> SupereIevation Rate - Ft./Ft. <br /> • <br /> Figure A <br /> CURVE RADII AND SUPERELEVATIONS <br />