PTV Vissim - Frequently Asked Questions (FAQs)

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Do I have to consider a warm-up period for my simulation?

PTV Vissim models should include a warm-up period in addition to the analysis period in order to get realistic results. A simulation always starts with an empty network and therefore must be pre-loaded for the analysis. The duration of the warm-up period depends on the network size and level of congestion. Typically, a warm-up period of 15 to 30 minutes is enough. This means for a one-hour analysis period, the total simulation runtime would be 1.5 hours minimum. Make sure that all evaluations start after the warm-up period: change the attribute 'From-time' in the Evaluation Configuration window.