Different Approaches to the Modal Split Calculation in Urban Areas

In order to cope with rapid growth of congestion levels in urban areas, it is necessary to improve performances of a traffic network which can be one of the basic tasks of transport planning. In this situation „‟build only‟‟ approach, in most cases, is not the right approach. New transport strategies on the local and political levels must be defined and all stakeholders must be identified. The development of new services such as Park & Ride systems, individualised public transport services as well as creation of transport plans (car-pool, car-share) can significantly reduce the number of individual vehicles entering the urban area, thus reducing congestion levels and improving traffic flow performances. In order to create those kinds of strategies, a set of indicators must be defined. Those indicators provide the basic overview of network performances. One of the most relevant indicators is the modal split indicator. This paper describes the relevance of the modal split as well as different approaches to the modal split calculation. For the purpose of the modal split calculation, a set of terms is also defined.