Use of GSM Technology as the Support to Manage the Modal Distribution in the Cities

The concept of use of GSM technology to manage the congestion in the agglomerations and metropolitan areas is described in the paper. The topic is reviewed from two different angles. Firstly, by the acquisition of dynamic information about relocations (with the accuracy of up to a single user and vehicle type) it becomes possible to better adapt the offer of the urban public transportation to the needs of the passengers. Secondly, the data on the identification of movements of the urban public transportation vehicles may, due to the application of GSM technology, be made available to the passengers in real time allowing them to make rational decisions on the choice of the mode of travel. The presented problem discussion is aimed at supporting the solutions reducing the congestion in the cities (in this case by changing the modal split of the traffic) and at reducing the negative influence of the transportation on the environment (the increase of the share of environmentally friendly means of transportation in the overall traffic).