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<br />r <br /> <br />. <br /> <br />. .,,,...,.., . <br /> <br />LEVEL OF SERVICE DEFINITIONS <br /> <br />RoAow A V SEGMENTS OR <br />CONTROLLED ACCESS <br />L.O.S. HIGHW A VS <br /> <br />A Free flow, tow <br />. traffic density. <br />.!= tr.e susl-k~ <br /> <br />B Delay Is not unreasonable, <br />stable traffic flow. <br />t;,'-t~~ SIGS/veh <br /> <br />c <br /> <br />. s.. - z. S'.~ <br />s~I"t'" <br /> <br />e <br />D <br /> <br />2~.t -~".D <br />st.c,~lveh <br /> <br />E <br /> <br />.,,,., -"".c <br />SefM.I ,,<<4, <br /> <br />F <br />> t, eta " <br />~,'-f! '" <br /> <br />Stable condition, movements <br />somewhat restricted due to <br />higher volumes, but hot <br />objectionable for motorists. <br /> <br />Movements more restricted, <br />queues and delays may occUr <br />during shod peaks, but <br />lower demands occur oHen <br />enough to permit dearing; <br />thus preventing excessive <br />backups. <br /> <br />Actual capacity of the <br />toadway involves delay <br />to all motorists due to <br />cOhgestlon. <br /> <br />Forced tiow with demand <br />volumes greater than <br />capacity resulting in <br />complete congestion. <br />Volumes drop to zero in <br />extreme cases. <br /> <br />INTERSECTIONS <br /> <br />No vehicle walts <br />longer than Ohe signal <br />indication. <br /> <br />On a tare occasion <br />motorists walt <br />through more than <br />one signal indica tion. <br /> <br />Intermlttentty drivers <br />wait through more than <br />one signal indication, <br />and occasionally backups <br />may develop behind left <br />turning vehldes,trafflc <br />flow still stable and <br />acceptable. <br /> <br />belays at Intersections <br />may become extensive <br />with some, espedally <br />left-turning vehicles <br />wai ting two or more <br />sighalindicaHons; but <br />enough cycles with tower <br />demand occUr to permit <br />periodic clearance, thus <br />preventing excessive <br />back-ups. <br /> <br />Very long queues may <br />create lengthy delays. <br />especiatly lor leU <br />turning Vehicles. <br /> <br />Backups from loca Hons '. . <br />downstream testrict or <br />prevent movement ot <br />vehicles out of approach <br />creating a storage atea <br />during part ot all ot <br />an hour. <br /> <br />e <br /> <br />.?<,c - avev4~ del~ ,tv wWUe. 0\+ iuttV'5fc..tiot-.l5 <br /> <br />A 't)\i~~...J Dt!~'~,.J "f UVbA..J U"1ltw~.s <br />"....J AV'l-e;v,~ Sf'v~-t~ - .M~t.-t-to, ,.,1~. <br /> <br />S~V"(t. : <br /> <br />"A <br /> <br /> <br /> <br /> <br />