Abstract
This paper briefly presents the basic principles of the ProLab 2 demonstrator. The ProLab 2 is a driving assistance system. Its goal is to assist the driver during a given maneuver, and to inform him about the potential or real risks involved. It is constituted by a large number of modules that works out all together and collaborates to give an efficient help to the driver. The system can be used in several real traffic conditions. The driver keeps the control of the vehicle, and can choose the type of help that he needs.