OPERATION OF WEAVING AREAS
ACCURATE TRAFFIC COUNTS WERE MADE BY VEHICLE TYPES FOR EACH OF THE MOVEMENTS THROUGH SEVERAL PROBLEM FREEWAY LOCATIONS AND WERE RECORDED FOR EACH 10 OR 15 MINUTE TIME INTERVAL, TOGETHER WITH THE OPERATING CONDITIONS, CONGESTION AND VEHICLE SPEEDS DURING THE PEAK AND NEAR PEAK PERIODS OF FLOW. STUDIES CONDUCTED DURING HIGH VOLUME CONDITIONS ON FREEWAYS SHOW THAT ABOUT 10% OF THE VEHICLES SHIFT LANES WITHIN EACH 1,000 FEET FOR REASONS OTHER THAN THOSE CONNECTED WITH ENTRANCE AND EXIT REQUIREMENTS. THE EFFECT OF VEHICLES SHIFTING LANES IS INCLUDED IN NORMAL CAPACITY DETERMINATIONS OF MULTILANE FACILITIES. RESULTS OF STUDIES CONDUCTED AT WEAVING SECTIONS, INCLUDING SEVERAL OF THE SECTIONS ON WHICH THE ORIGINAL CURVES WERE BASED, SHOW THAT THE MAXIMUM POSSIBLE CAPACITIES OF WEAVING SECTIONS ARE NOW SOMEWHAT HIGHER THAN THEY WERE SOME 10 YEARS AGO. TECHNIQUES DEVELOPED FOR THE ANALYSIS OF WEAVING SECTIONS WITH MORE THAN 2 ENTRANCES OR EXITS ARE PRESENTED.
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Supplemental Notes:
- No 167, pp 38-41, 1 FIG, 1 REF Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
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Authors:
- Normann, O K
- Publication Date: 1957
Media Info
- Monograph Title: Highway capacity studies
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Serial:
- Highway Research Board Bulletin
- Issue Number: 167
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Freeways; Highway capacity; Multilane highways; Peak hour traffic; Traffic congestion; Traffic counting; Traffic flow; Traffic speed; Vehicles; Weaving sections
- Old TRIS Terms: Freeway capacity
- Subject Areas: Highways; Operations and Traffic Management; Vehicles and Equipment;
Filing Info
- Accession Number: 00225403
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Apr 28 1994 12:00AM