Vissim Tutorial - Vehicle inputs

[@sebastiancamiloflorezherna495]

Hello, can you tell me how you are adding the simulation preload? Thank you very much your videos are very helpful

[@MatyasLemberTutorials]

Hey, You add a so called warm up period before the period you assess. You need to define time intervals like 0-900 (warm up), 900-4500 (peak hour) and 4500-5400 (cool down). Find this in Base Data -> Time intervals -> select vehicle input. This way you can have a 15minute warm up and 15 minute cool down. In Simulation menu settings, click configuration and set the simulation period to 5400 seconds. When you set up your evaluation, make sure that you set evaluation time periods to this: from time: 900, to time: 4500, interval 3600. This will get you the results for the peak hour period, excluding warm up and cool down.

[@sebastianflorez8824]

I have a question, I don't know if you can help me. For example, in the parameters or evaluation configuration, the period from 900 to 4500 is defined -> from time 900, to time 4500 intervals are 3600. But I don't know if it's correct to do this without defining an interval time for the inputs in the database. I don't know if I'm omitting the warm-up.

[@MatyasLemberTutorials]

@@sebastianflorez8824 I am not sure I fully understand the question but this might help: Good modelling practice is to have a warm up period. The length of the warm up period depends on your model, but usually between 15-60minutes. You should set this up in the time intervals for vehicle inputs, and for any other object where it is applicable in your model. Then you should evaluate your model for the actual peak period (excluding warm up and cool off). If you don't model warm up, than of course it does not make sense to set up evaluation intervals for warm up. Modelled periods and evaluation periods should match each other, otherwise you don't evaluate the right period.