Microsimulation provides the ultimate in detailed analysis. There are many questions which are simply not able to be answered by conventional analysis. Deterministic analyses like the HCM and the different roundabout models can evaluate individual intersections. Only a microsimulation analysis can take into account the true impact that the individual intersections, weaving areas, control devices, and transportation modes have on each other.
Microsimulations are forced to work within the constraints of the physical world. Even though a roundabout or loop ramp has two lanes when a heavy truck is on it there is very little room for any other vehicles. The impacts of the roadway geometries and the physical size of the vehicles have tremendous impacts that are not take into account with macroscopic or deterministic analysis.
Just a few of the many questions that can be answered with a microsimulation analysis:
