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Table E-4 <br /> Level of service criteria .(Unsignalized Intersections) <br /> Jill <br /> Reserve Capacity Level of Service Expected Delay to <br /> (pcph) Minor Street Traffic <br /> >400 A Little or no delay <br /> 300-399 B Short traffic delays <br /> 200-299 C Average traffic delays <br /> 100-199 D Long traffic delays <br /> 0-99 E Very long traffic delays <br /> * F <br /> * When demand volume exceeds the capacity of the lane, extreme delays <br /> will be <br /> encountered with queuing which may cause severe congestion affecting other , <br /> traffic movements in the intersection. This condition usually warrants <br /> improvement to the intersection. <br /> Source: Transportation Research Board. "Highway Capacity Manual". Special <br /> Report 209 (1985) <br /> Table E-5 <br /> Level of Service Criteria (All-Way Stop Controlled <br /> Intersections) <br /> Level of Service Average Delay per Vehicle to Minor Street Traffic <br /> A <br /> < 5 seconds <br /> B 5 to 10 seconds <br /> C 10 to 20 seconds <br /> D 20 to 30 seconds <br /> E 30 to 45 seconds <br /> F > 45 seconds <br /> oil Ell <br /> E-6 <br />