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City of Santa Ana -Park View at Town and Country Manor <br />and Traffic Draft EIR <br />Table 4.6.2 (cont.): Level of Service Descriptions for Signalized Intersections - HCM <br />Methodology <br />Level of Delay Description <br />Service (second /vehicle) <br />E > 50.0 - 80.0 Very long traffic delays <br />F > 80.0 Severe congestion <br />Source: Traffic Impact Study and Parking Analysis for the Park View at Town & Country Manor, Kimley -Horn <br />Associates, Inc., June 2009. <br />Unsignalized Intersections - Highway Capacity Manual (HCM) Methodology <br />Unsignalized intersections are analyzed using the HCM methodology for stop - controlled <br />intersections. This methodology estimates the average delay (in average seconds per vehicle) for <br />each of the movements to or from the minor street, and determines the level of service for each <br />movement. Similar to the ICU methodology, the HCM delay forecast translates to a Level of Service <br />designation, ranging from LOS A" to LOS F. A summary description of each Level of Service for <br />unsignalized intersections and the corresponding delay, expressed in seconds per vehicle, is provided <br />below in Table 4.6 -3. <br />Table 4.6.3: Level of Service Descriptions for Unsignalized Intersections - HCM Methodology <br />Column <br />Title I Column Title <br />A <br />< 10.0 <br />Little or no delay <br />B <br />> 10.0 — and < 15.0 <br />Short traffic delays <br />C <br />> 15.0 and < 25.0 <br />Average traffic delays <br />D <br />> 25.0 and < 35.0 <br />Long traffic delays <br />E <br />> 35.0 and < 50.0 <br />Very long traffic delays <br />F <br />> 50.0 <br />Severe congestion <br />Source: Traffic Impact Study and Parking Analysis for the Park View at Town & Country Manor, Kimley -Horn <br />Associates, Inc., June 2009. <br />Roadway Segments Analysis Methodology <br />Roadway segments were analyzed using the methodology in the Orange County Master Plan of <br />Arterial Highways (MPAH) and the standards set in the City of Santa Ana Circulation Element as <br />shown below. The level of service for a roadway segment is determined by its MPAH classification <br />and the maximum average daily traffic criteria shown below in Table 4.6 -4. <br />4.64 Michael Bmndman Associates <br />H\Cl t (PN- JMb327b32]0030DEERb32]0030 Sec01 Tmspo md¢ <br />