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• <br /> fp FEHR&PEERS ASSOCIATES,INC. <br /> Transportation Consultants <br /> Ms. Dolores Ortiz <br /> January 14, 2000 <br /> Page 4 of 6 <br /> Table 2 <br /> Intersection Level of Service Definitions <br /> Average Delay <br /> Level of Per Vehicle <br /> Service Description of Traffic Conditions (Seconds) <br /> SIGNALIZED INTERSECTIONS <br /> A Insignificant Delays: No approach phase is fully utilized and no vehicle <5.0 <br /> waits longer than one red indication. <br /> B Minimal Delays: An occasional approach phase is fully utilized. Drivers 5.1 to 15.0 <br /> begin to feel restricted. <br /> Acceptable Delays: Major approach phase may become fully utilized. 15.1 to 25.0 <br /> Most drivers feel somewhat restricted. <br /> D Tolerable Delays: Drivers may wait through more than one red indication. 25.1 to 40.0 <br /> Queues may develop but dissipate rapidly,without excessive delays. <br /> E Significant Delays: Volumes approaching capacity. Vehicles may wait 40.1 to 60.0 <br /> through several signal cycles and long vehicle queues form upstream. <br /> F Excessive Delays: Represents conditions at capacity, with extremely long >60.0 <br /> delays. Queues may block upstream intersections. <br /> UNSIGNALIZED INTERSECTIONS <br /> A No delay for stop-controlled approaches. <5.0 <br /> B Operations with minor delay. 5.1 to 10.0 <br /> C Operations with moderate delays. 10.1 to 20.0 <br /> D Operations with some delays. 20.1 to 30.0 <br /> E Operations with high delays, and long queues. 30.1 to 45.0 <br /> F Operation with extreme congestion,with very high delays and long >45.0 <br /> queues unacceptable to most drivers. <br /> Source:Highway Capacity Manual, Special Report 209, Transportation Research Board, 1994. <br /> X414 <br />