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11"117Is 1.(J(-ATION AND DRS1i,A' i�l?tit' <br /> ' 3 tl.Js317s',S'7,S OP 1111,1111'.}1>:'I�`;` { ' "t3 t:,�j 1t�131:.Stt,eY;`I'»•kl s`# <br /> tresigns eeti,lrl p f! <br /> 2500 30 40 50 t1tc: <br /> }' v Total ds i'd2i•ds+III <br /> Z 1500 <br /> w 1000 !! i 't j; ' �# �( (' ,!l t. j Y•r, lie.•- E <br /> dy <br /> sti i <br /> 1 500 <br /> F dt Flo.47.Hight tlistaner srtif(( <br /> eI'?ilcl. ! <br /> y 30 40 €' A 3nnro oxact valuo of 1#•i 11 <br /> l lu 1•>sit; '; <br /> 50 G0 t # tt I £ <br /> Average spaatl of passing vehicle,mph k i (Iy tt ! •' I, t <br /> a - CAB <br /> 1 !nits.011.Total p aping siglst dintassca tar two-intfo highsvnvo. i € , <br /> 1 Tho nalninal tight distant e in Hat tho chord AD;it in the are we have At — R(i-� �; 1� ' >xr tl,t�_ �+• ; I` � ; � ;• :I <br /> 61114012tlell Isp time elturd representing tlta nettuil llnth travermi i} ' 1). <br /> in whiu)1 d (81200) X <br /> the cnr, sinco title is tllo eta sla tli�t11s1cA tllnt cars he utilizer!. t <br /> ppe g <br /> The rniiilst3 of t1S3B lent!!is atsAtit{� ft sailOrter tluln tftA Cesiter-lino ExanI le L Tito rlt>SrrttEt A nA P�+k{i tl1 t 'Whys.3f�4'nlnil�tfte Yl ea#i- <br /> i 17 .'�, t tr. 1 t, t <br /> l radiun Well in the formulas ivitieh follow. �)ethtetiAr}.4 Af�ft fFAtn stile Siplit diets►tiM When matte! f't .�->) #t fEl;.ur a ip fit{ti rq- <br /> i thn txslrulnted villues of Af relay be lundo for greater nraal[rar . j' 1i 77 <br /> tll!lrCtl:tilt!r1111►tEitti?►1 rtill►t►11111= jt n � `�; � <br /> However, (hn assumption made be)usv thitt chortl AC_ S toarls Solution. thing Eq.(160), . ,�, - '11: • »i= te+ _ <br /> to coulpes?snte for tllis diifererseo. ( <br /> Vale 1. ,S< g <br /> i ! <br /> 1 From Fig.97, <br /> Eysinple% -diva is 1) d°-'ti t I I if all <br /> irtst2=tl':i e}; <br /> ACi AlI= 1• Af*, {q) ie tilt abl+tructian. <br /> 'i [ i 1'1 [ � <br /> ante t <br /> ,R7 i t <br /> (o) Ursing Rq.tt{1 ? I �!' r! 'l � Il 1 <br /> i Substituting(b) ill (a), lotting AC }8,And reducirig, the get 11�f '� <br /> i (b) Uning MI.(168). 11f � <br /> Cnae 'l. S> h. )n Fig. 8 i,il I{ii h dj to�ci�;()vurl'll tt the <br /> t 8�3f (IG6j ' <br /> curve on to the trill l:t114 11 11 to.l # `tt ti ey ll?ic he lTr�jn`ty`n€ <br /> #� i� '(r r t`and Si = 8Tt X tlt {1317} Curvature, 90 tilat 3S`.= L-F' _.y es' ,i . • $I .I )-_1.tj€ tli iltgit , <br /> triangles ACU,ADO,and A <br /> �� i� ii� �l '�• s � {`� #,��� 1I�. _ •till' .; <br /> ,L ti <br /> .1 Y:f14 1'�. .S T•Y t.:+ 1 t 1 1� !� 1 - � "�` �..�k <br /> lit <br /> t � I '.i#t, , <br /> t : F. ��:.: <br />