Figueiredo, LinoJesus, Isabel S.Tenreiro Machado, J. A.Ferreira, José RuiCarvalho, J. L. Martins de2019-04-042001-08-22http://hdl.handle.net/10400.22/13384This paper presents a review of the state of the art on Intelligent Transportation Systems. ITS involves a large number of research areas and, therefore, this paper focus on those we belive to be the most relevant. The main purpose is to study the achievements attained in the last years and to give an overview of possible directions towards future research.engIntelligent systemsRoad vehicle locationTraffic controlTraffic information systemsSimulation and modellingconference object10.1109/ITSC.2001.948835