Module 3 : Microscopic Traffic Flow Modeling

Lecture 12 : Vehicle Arrival Models: Headway

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	Conclusion This chapter covers how the vehicle arrival can be modelled using various distributions. The negative exponential distribution is used when the traffic is low and is most simplest of the distributions in terms of computation effort. The normal distribution on the other hand is used for highly congested traffic and its evaluation require standard normal distribution tables. The Pearson Type III distribution is a most general kind of distribution and can be used intermediate or normal traffic conditions.