PTV Visum - Frequently Asked Questions (FAQs)
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The background map of the map service 'OpenStreetMap (Mapnik)' loads slow and only partly.
The cause for this is neither the software nor the license, but the availability of this map service, which can vary depending on the used network and the time of day.
The PTV AG only offers an interface to this public map service, but cannot guarantee or influence the availability of it.