22 nd ITS World Congress, Bordeaux, France, 5–9 October 2015 Paper number ITS-2826 Traffic management based on vehicular communication at low equipment rates Daniel Krajzewicz 1* , Robbin Blokpoel 2 , Alessio Bonfietti 3 , Jérôme Härri 4 , Stefan Hausberger 5 , Jérémie Dubois-Lacoste 6 1. German Aerospace Center, Institute of Transport Research, Rutherfordstr. 2, 12489 Berlin, Germany, Daniel.Krajzewicz@dlr.de 2. Imtech Traffic & Infra, Netherlands 3. University of Bologna, Italy 4. EURECOM, France 5. Technical University Graz, Austria 6. Université libre de Bruxelles, Belgium Abstract Most applications built upon vehicular communications (V2X) target on increasing traffic safety. They often require a direct communication between at least two vehicles equipped with a communication device. Thereby, a sufficient amount of equipped vehicles is necessary for assuring these applications’ functionality. Meanwhile, traffic management needs information about the state on the roads. The COLOMBO project, co-funded by the European Commission, follows the idea to support traffic management with new data, gained from vehicular communications at low equipment rates. It designs and evaluates traffic management solutions for traffic surveillance and traffic lights based on simulations. This article introduces the major achievements of the project, regarding both, the developed traffic management solutions as well as the extensions of the used simulation tools. Keywords: traffic management, vehicular communication, simulation. Introduction Road traffic is a major societal topic, which directly influences the economy via the costs of transporting goods and people. It is as well responsible for a big portion of air pollution generated by the human kind. Different disciplines and actors work on increasing the efficiency of road traffic for reducing its environmental impact. The upcoming vehicular communication technology (known as Dedicated Short Range Communication (DSRC) in the US and as ETSI ITS G5 in EU) is assumed to be one of the next major evolution steps of road traffic. This technology allows vehicles and road side units (RSUs) to exchange information via a dedicated wireless communication channel using specific messages (Cooperative Awareness Message (CAM) in the EU, Basic Safety Message (BSM) in the US). Vehicles equipped with communication devices send information about their state (GPS position, speed) periodically. Other equipped vehicles or RSUs can collect this information to generate a representation of the objects and their behaviour in their surroundings called ‘cooperative awareness’. Besides CAM/BSM, further messages that inform traffic participants about specific events, such as dangerous weather conditions or an