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<br />Dowling Associates, Inc. ' . <br />Transportation Engineering' Planning- Research' Education <br /> <br />J <br /> <br />~~ <br /> <br />I <br /> <br />Free Flow/Insignificant Delays: No approach phase is fully utilized by <br />traffic and no vehicle waits longer than one red indication. <br /> <br />Stable Operation/Minimal Delays: An occasional approach phase is fully <br />utilized. Many drivers begin to feel somewhat restricted within platoons of <br />vehicles. <br />Stable Operation/Acceptable Delays: Major approach phases fully utilized. <br />Most drivers feel somewhat restricted. <br />Approaching Unstable/Tolerable Delays: Drivers may have to wait <br />through more than one red signal indication. Queues may develop but <br />dissipate rapidly, without excessive delays. <br /> <br />55.1-80.0 Unstable Operation/Significant Delays: Volumes at or near capacity. <br />Vehicles may wait through several signal cycles. Long queues form <br />upstream from intersection. <br /> <br />> 80 Forced Flow/Excessive Delays: Represents jammed conditions. Intersection <br />operates below capacity with low volumes. Queues may block upstream <br />intersections. <br /> <br />Level of Average <br />Service Vehicle <br />~ Control Delay <br /> (Seconds) <br />A < 10.0 <br />B 10.1-20.0 <br />C 20.1-35.0 <br />0 35.1-55.0 <br /> <br />E <br /> <br />F <br /> <br />I <br /> <br />Table 2 <br />level of Service Criteria <br />Signalized Intersections <br /> <br />. <br /> <br />Description <br /> <br />I <br /> <br />~ <br /> <br />J <br /> <br />J <br /> <br />J <br /> <br />J <br /> <br />J <br /> <br />Source: Transportation Research Board, "Highway Capacity Manual," 2000 <br /> <br />The existing+approved peak hour Levels of Service (LOS) were calculated for the 28 study <br />intersections. Table 3 presents the results of the level of service calculations prepared for this <br />analysis. <br /> <br />J <br /> <br />Page 6 <br /> <br />Traffic Analysis <br />Bernal Commercial Development, Pleasanton <br />