Third Experiment: Optimal L

The purpose of this third experiment is to run the computer program LESLAM and compute the optimal flow rate * needed for a highway of a given segment of length L miles with a given number of lanes N. This optimal * is designed to make sure that the blocking caused by the congestion is minimized and that free flow conditions are acheived for the given highway design.

You are asked to input the length of the highway segment of L miles, N lanes, and to estimate the blocking probability Pc .

The outputs of the program will give you the optimal
* needed for a highway of given dimensions.

Experiment 3: How sensitive is
* to changes in one of the other dimensions. Pick one of the dimensions either L,N and carry out your experiment for the linear and exponential models.
Linear Exponential
Number of lanes
Segment Length
P (balk)


Animation of Congestion warning sign

In general, as a summary expression of what you have seen with
the state dependent queueing model, what other potential applications might come to mind for use of the model in traffic engineering: e.g. are there other types of congested traffic flows the model might be useful for? What other design situations come to mind where this model could have an impact? What types of extensions are necessary in order to adapt this model to traffic networks in general? Please articulate these extensions as clearly as possible.