Resumen
More and more drivers use GPS based tools (GNSS) to plan their route in order to choose the optimum route (shorter, faster or the most economical). These GNSS devices can operate offline or online. Off-line, when the GIS database is installed in the device and there is not any information regarding the actual traffic flow, in that case the program always calculates the same route between two places. Online, when the actual traffic flow information is available, in that case there is the possibility of the calculation of the optimal route in real time. Based on the above options, the driver?s route-choice decision can be static, dynamic or informed. Static, when the driver always follows the same route: either without using a GNSS device (choosing the usual way) or with an offline device. Dynamic, when the driver chooses the way conforming to only real time visual information on the spot without any navigation tool or external information, and decides according to traffic density. Informed, when the GNSS device calculates the optimal route in line with the current traffic flow information. The aim of this study is the present the influence of the proportion of different route-choice decision modes.