论文信息 - ANALYZING FREEWAY TRAFFIC UNDER CONGESTION: TRAFFIC DYNAMICS APPROACH. DISCUSSION

ANALYZING FREEWAY TRAFFIC UNDER CONGESTION: TRAFFIC DYNAMICS APPROACH. DISCUSSION

A discussion of a paper with the aforementioned title by D.H. Nam and D.R. Drew, published in this journal (Volume 124, Number 3, May/June 1998), is presented. The paper questions the consistency between deterministic queuing analysis and shockwave analysis. The discussion explains in detail the consistencies between these two methodologies. It is concluded that in the context of the analysis of congestion upstream of freeway bottlenecks, the methods provide two different recipes for drawing pictures of traffic phenomena that tend to emphasize different details. Delays are manifested accurately in the queuing diagram by design when using deterministic queuing analysis. The area between the demand and capacity curves is equal to the total delay experienced by the affected vehicles.

David J. Lovell | John R. Windover

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