Why are there so many more input parameters in a microsimulation tool than there are in the HCM 2000?
Due to the nature of a microsimulation tool, the data requirements exceed that of the HCM 2000 in order to support the underlying algorithms used to model the conditions of the respective network. In applying any microsimulation tool, the analyst should understand the tools reliance on the user defined and default parameters, the random seed parameters, as well as the sensitivity of each upon the final output. By understanding this, the analyst quickly realizes that simulation is an extremely powerful tool, but is also easily manipulated or misapplied to create unrealistic operational conditions. Because of this, the analyst is challenged to calibrate the tool by modifying the input parameters in the time and within the budget allocated. It is also essential that appropriate level of input data is considered and assumptions are made commensurate to the problem statement and scope of the project. Additional information is contained in Volume III of the FHWA Traffic Analysis Toolbox.
Related Questions
- Given the same input data, why is the output of the HCM and that of a traffic microsimulation tool different?
- Why are there so many more input parameters in a microsimulation tool than there are in the HCM 2000?
- How does the output of a microsimulation tool compare to the Level of Service output of the HCM?
