Microscopic Simulation

Microscopic simulation of traffic has become a valuable aid in assessing the system performance of traffic flows on networks, as recognized by the Highway Capacity Manual 2000 (7). Analysis of many of the treatments discussed in this chapter may benefit from the use of appropriate simulation models used in conjunction with analytic models of isolated roundabouts discussed in Chapter 4. These effects include more realistic modeling of arrival and departure profiles, time-varying traffic patterns, measurement of delay, spatial extent and interaction of queues, fuel consumption, emissions, and noise. However, the user must carefully select the appropriate models and calibrate the model for a particular use, either against field data, or other validated analytic models. It would also be advisable to check with others to see if there have been any problems associated with the use of the model.