Title page for ETD etd-06102009-063124
|Type of Document
||Kuchi, Mahathi B.
||Assessing the relationship between recurring and nonrecurring traffic congestion
||Master of Science
|Drew, Donald R.
|Trani, Antonio A.
|Walker, Richard D.
|Date of Defense
This discussion develops an approach for using fractal geometry and diffusion limited
aggregation to describe highway traffic flow. The formulation is platoon based and is
most applicable for describing uninterrupted-flow facilities. The model explains empirical
models in terms of fractal dimensions. The concepts of change in length of a platoon and
a discrete spacing unit are described for the first time in this paper. Boundary values of
various fractal dimensions are calculated for different HCM freeway LOS designations. A
state of flow equation established in the model represents both microscopic and
macroscopic aspects of a traffic stream. Using the same traffic flow model, recurring and
nonrecurring types of congestion were quantified. A congestion evaluation index was
developed to address the two types of congestion which can also be used as an
performance-measure in monitoring a Congestion Management System (CMS). A few
ideas were suggested for quantifying indirect benefits of CMS and furthering the present
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