EVALUATION OF WEAVING ON FREEWAYS WITH SUB-STANDARD GEOMETRIC CHARACTERISTICS

The N2 freeway between Cape Town and Somerset West has become a major commuter route to the Cape Town Central Business District. At a distance of approximately five kilometres from the Cape Town CBD the spacing of the interchanges over a 2.2 kilometre section becomes extremely close, the closes interchange spacing being 330 metres. In order to finalize upgrading proposals along this freeway section, a 220 metre weaving section, between the M5 and Liesbeek Parkway, was analyzed. Comprehensive detail on traffic volumes and speeds was obtained and evaluated. It is shown that the measured volumes exceed the weaving capacity proposed by the Highway Capacity Manual to a considerable degree. The speed predictions of the Highway Capacity Manual appear to be inaccurate under the local conditions. Other models for speed and capacity prediction also have limitations. The use of density for determination of Level-of-Service can have merits.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/8774919059
• Corporate Authors:

  Danish Road Directorate

  13 Niels Juels Gade, P.O. Box 9018
  Copenhagen K,   Denmark  DK-1022
• Authors:
  • Stander, Hein
  • Tichauer, C
• Conference:
  • Third International Symposium on Highway Capacity
  • Location: Copenhagen, Denmark
  • Date: 1998-6-22 to 1998-6-26
• Publication Date: 1998-6

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 915-930

Subject/Index Terms

• TRT Terms: Analysis; Freeways; Geometric segments; Highway capacity; Interchanges; Level of service; Spacing; Traffic density; Traffic speed; Traffic volume; Weaving sections; Weaving traffic
• Identifier Terms: Highway Capacity Manual
• Subject Areas: Highways; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning; I73: Traffic Control;

Filing Info

• Accession Number: 00783573
• Record Type: Publication
• ISBN: 8774919059
• Report/Paper Numbers: Volume 2
• Files: TRIS
• Created Date: Feb 6 2000 12:00AM