PTV Vissim - Dynamic assignment - Dynamische Umlegung
SymptomI have a simulation period about 24 hours (86400 seconds), after 4 hours no more vehicles will be generated. CauseThe problem occurs because for traffic from…
QuestionWhat is the unit of the generalized cost function? How can I determine the coefficients correctly?AnswerThere is no implicit unit for the generalized cost, so…
QuestionI have several cases where zones need to load at two different parking lots (zone connectors). How can I do that?AnswerYou may assign the same…
SymptomWhen initializing the simulation, PTV Vissim freezes on "Build node structure... Node n". CauseThis problem usually occurs when nodes are missing in the network. In such…
QuestionIs the cost of a route dependent only on travel time?AnswerA generalized cost function is used instead of merely travel time. The link cost is…
QuestionI am using dynamic assignment for a network and have performed several runs, but the model never achieves convergence. Do you have any suggestions?AnswerHere are…
QuestionAre matrix correction tools available in PTV Vissim?AnswerThere is a matrix correction tool in PTV Vissim. For more information, click Help > PTV Vissim Help…
QuestionWhy are some of the trips of the OD matrix not assigned?AnswerPlease check the following points:- Is the evaluation period long enough to catch all…
FrageHow can I view or edit the routes created by using dynamic assignment?Antwort1) Open the network and select 'Parking lot' from the toolbar.2) Choose 'Edit…
QuestionBefore running a simulation I get a warning message that the abstract graph in the path file is not identical with the current one. What…
QuestionAfter a simulation run, I get warnings that some paths could not be found. Does it mean that during the simulation not all vehicles were…
QuestionAfter achieving convergence, what settings must I adjust to maintain the path volumes and run simulations for evaluation?AnswerAfter achieving convergence, if you want to continue…