portatour® bases its route planning on historical speed data, which have been collected by navigation system and mobile phone providers by measuring the movement data of millions of road users and subsequently providing them for the respective road sections.
If you realize during the daily use of portatour® that you regularly deviate from the scheduled journey times, you can, according to your driving style, set a relative deviation from the historical speed data for the road types city road, country road and highway in the Driving speed option. Click Custom settings and change your values. Real-time traffic data (e.g. traffic jam due to an accident) are not taken into account for scheduling.