CarTALK 2000

Objectives

Technologies

• Requirements Assessment

  The project starts off with the assessment of requirements and technologies of today's and future applications for co-operative driver assistance systems. This work togther with a specification of communication-based assistance systems is performed by all partners and is followed by a preliminary hazard analysis which provides information about safety critical aspects of the communication-based assistance systems and leads to refinement and adaptation of the specifications for the systems.

• Assistance System Development

  New driver assistance applications with new fusion techniques will be developed. Test vehicles will be provided by the project partners DaimlerChrysler, Centro Ricerche FIAT and TNO. At the end of the project the developed applications will be demonstrated in selected real scenarios by communicating between the different equipped vehicles.

• Communication System

  A key technology for CarTALK 2000 is the development of a mobile multi-hop ad-hoc radio communication system that meets the requirements set by the applications (e.g. extremely high dynamic network topologies). It will be based on a UMTS radio access technology, using a spatial-aware position-based multi-hop routing protocol. DaimlerChrysler, Robert Bosch, Siemens, and the University of Stuttgart are involved in this research task.

• Traffic Impact Simulation

  Selected scenarios are simulated and effects on safety and traffic are analyzed by TNO. The interaction between the driver, his (intelligent) vehicle, the (intelligent) infrastructure and other vehicles is taken into account in the traffic performance assessment.

• Socio-Economic Assessment

  The socio-economic impact of communication-based driver assistance systems is a major criterion for the success of a market introduction. To evaluate the socio-economic impact the University of Cologne will under take economic analyses of driver assistance systems and info-mobility applications.

Applications

• Information and Warning Functions

  A vehicle will transmit a warning message when it detects a vehicle breakdown, high traf fic density and a congestion, or dangerous road sur face conditions. This allows an early warning of the driver of following vehicles on the same road.

  

• Communication-based Longitudinal Control Systems

  Existing Adaptive Cruise Control systems only react on the vehicle directly in front. By integrating communication, these systems may adapt longitudinal control to the traffic in front and can allow anticipating early braking maneuver when an invisible vehicle in front (e.g. vehicle 1 in the fig. below) is braking. This leads to a more natural following behavior. Moreover, it helps avoiding accidents that occur due to the inattention of the vehicle in front.

  

• Co-operative Assistance Systems

  A typical scenario for co-operation is the highway entry and merging scenario. Today, misunderstandings between drivers on the highway and on the entry-lane cause critical situations. By exchanging information up to simple trajectory plans, critical situations can be foreseen and solved by the vehicles themselves. Other examples are inner-city intersection scenarios when the right of way situation is unclear.

  

Partners

• DaimlerChrysler, Germany
• Centro Ricerche FIAT, Italy
• TNO, Netherlands
• Robert Bosch, Germany
• Siemens SICN, Italy
• University of Stuttgart, Germany
• University of Cologne, Germany