In This Issue

May 1995
Transportation Science;May95, Vol. 29 Issue 2, p107
Academic Journal
This article presents information on various vehicular traffic models. The modeling vehicular traffic using the discrete time markovian arrival process model can capture the correlations between headways and also provide a computationally tractable model for traffic streams. The continuous time analogue of the model can also be developed in a similar manner. The vehicle routing problem lies at the heart of distribution management and has attracted the attention of several researchers over the last three decades. A common version of the problem is to design a set of minimum cost collection routes on a set of geographically clustered customers, using a fleet of vehicles and subject to a number of constraints such as vehicle capacity and maximal route duration. In several contexts, like in less-than-truckload operations, some of the elements of the problem are stochastic. The routing problem belongs to a very difficult class of stochastic combinatorial optimization problems often regarded as computationally intractable.


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