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HOW TRAFF];¢ CONgESTiON ;[5 DEFINED <br /> <br />T~ncreasing <br />Vehicle belay or <br />Density <br /> <br /> r <br />becreasing <br /> <br />Vehicle belay or <br />Density <br /> <br />Definition of LOS: <br /> <br />THE LEVEL-OF-SE~V:[;CE (LO5) CONCEPT <br /> <br />0.9 <br /> <br />0.8 <br /> <br />0.7 <br /> <br />0.6 <br /> <br />LOS b <br /> <br /> Index of <br />Congestion <br /> <br />LOS C <br /> <br />0.5 <br /> <br />0,4 <br /> <br />0,3 <br /> <br />0.2 <br /> <br />0,1 <br /> <br />Level-of-Service (LOS) is an Estimate of the Quality of Traffic Flow. <br /> <br />Calculafions <br />Based On: <br /> <br />Key ?actors in <br />beteeminin9 LO$ ; <br /> <br />LO$ Used to <br />Desce/be Teaffic <br />/Vow at oe on: <br /> <br />1. Roadway Geometry <br />2. Traffic Volume Characteristics <br />3. Tntersections / 3;nterchonges <br /> <br />2000 Highway Capacity Manual (Transportation Research Board) <br /> <br /> HIGflWAY lO <br /> CORRIDORPL~ <br /> <br />1. Segments - Freeway vs. Expressway vs. Urban Arterial, etc... <br />2. Tntersections - Signalized vs. Unsignalized <br /> <br /> <br />