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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
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    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
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      <title>A REPORT ON THE ACCURACY OF TRAFFIC ASSIGNMENT WHEN USING CAPACITY RESTRAINT</title>
      <link>https://trid.trb.org/View/120610</link>
      <description><![CDATA[THE ACCURACY OF THE TRAFFIC ASSIGNMENT PROCESS WHEN CAPACITY RESTRAINT IS USED IN THE URBAN TRANSPORTATION PLANNING PROCESS WAS EVALUATED. A BRIEF EXPLANATION OF THE CAPACITY RESTRAINT PROCEDURE IS GIVEN TO PROVIDE THE NEEDED BACKGROUND INFORMATION. DATA OBTAINED FROM 10 URBAN TRANSPORTATION STUDIES ARE USED TO EVALUATE THE ADEQUACY OF THE TRAFFIC ASSIGNMENT PROCESS TO MATCH EXISTING TRAVEL PAT- TERNS. THIS EVALUATION IS MADE ON THE BASIS OF FIVE TESTS WHICH MEASURE THE DIFFERENCES BETWEEN GROUND COUNT VOLUMES AND ASSIGNED VOLUMES. THE RESULTS OF THE EVALUATION INDICATE THAT THE TRAFFIC ASSIGNMENT PROCESS CAN MATCH GROUND COUNTS WITHIN PLUS OR MINUS 15 PERCENT ON LINKS CARRYING VOLUMES GREATER THAN APPROXIMATELY 5,000 VEHICLES. THE MOST ACCURATE RESULTS ARE OBTAINED BY USING THE AVERAGE ASSIGNED VOLUMES FROM THREE OR FOUR ITERATIONS OF CAPACITY RESTRAINT. /AUTHOR/]]></description>
      <pubDate>Sun, 15 Aug 2004 02:36:07 GMT</pubDate>
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      <title>EAST LOS ANGELES INTERCHANGE OPERATION STUDY</title>
      <link>https://trid.trb.org/View/114747</link>
      <description><![CDATA[THE PERFORMANCE IS DESCRIBED OF PORTIONS OF THE EAST LOS ANGELES INTERCHANGE AS AFFECTED BY CHANGES IN STRIPING OF THE MERGING AREAS. THIS INTERCHANGE HAS AN AVERAGE DAILY TRAFFIC OF ABOUT 320,000 VEHICLES AND EXPERIENCES OPERATING DIFFICULTIES RESULTING IN LARGE DELAYS TO TRAFFIC. PAVEMENT MARKINGS AND RAISED BARS WERE USED TO CHANNELIZE THE MERGING AREAS INITIALLY. A BEFORE AND AFTER STUDY WAS CONDUCTED TO EVALUATE THE EFFECTS OF PROPOSED CHANGES IN ATTEMPTING TO EQUITABLY DISTRIBUTE DELAYS. AERIAL PHOTOGRAPHY, GROUND COUNTS AND FLOATING CAR RUNS WERE USED TO OBTAIN DATA TO EVALUATE THE OPERATION. COMPARISON OF THE CONDITIONS INDICATED THAT CHANNELIZATION CAN BE DETRIMENTAL, IF NOT PROPERLY DONE, STRIPING THAT IS LESS RESTRICTIVE CAN MORE EFFECTIVELY DISTRIBUTE DELAY THROUGHOUT THE TRAFFIC STREAMS, AND THE USE OF AERIAL PHOTOGRAPHY IS A PRACTICAL MEANS OF EVALUATING THE EFFECTS OF GEOMETRIC CHANGES ON TRAFFIC OPERATION.]]></description>
      <pubDate>Sun, 23 Jan 1994 00:00:00 GMT</pubDate>
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