PTV Visum - Frequently Asked Questions (FAQs)
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Why can PrT assignment results be different, with and without main nodes?
If a model contains main nodes, the links, nodes and turns within the main nodes are no longer considered. Therefore the model is different and the paths differ too: the path is searched from cordon link to cordon link of a main node, using a main turn. A part of the path (links and turns within the main node) is omitted.