Researchers have used analogies between the flow of fluids and the movement of vehicular traffic to develop mathematical algorithms describing the relationship among traffic flow elements. Discuss in one or two paragraphs the main deficiencies in this approach.
What will be an ideal response?
The main deficiency in using fluid flow theory to describe traffic flow is
that, unlike fluids which are continuous, traffic streams are made up of discrete
elements which have the ability to act independently of one another. In using fluid
flow theory, the traffic stream is analyzed at a macroscopic level, without
consideration given to the microscopic interaction between vehicles and the
effects of one vehicle on others in the stream. Average values are used to describe
the traffic stream over a given section (e.g. mean speed); characteristics and
attributes of individual vehicles are not considered.
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