1. Dipl.-Ing. Martin Ruhé German Aerospace Center (DLR) Institute of Transportation Research Workshop “Satellite based Traffic Measurement” Berlin, September 9 th 2002 Mobility Approach of MultiSat WebService

2. Why Space Born? GPS Positioning for Navigation Eutelsat Transmission of conventional traffic information Iridium Mobile communication global available Envisat Earth observation to produce digital maps Space flight technology; already established for transportation systems

3. Technical Motivation km/h Modern methods of remote sensing show a realistic chance for space born traffic data collection. Today it is possible to build up an optical camera with a resolution of better than 2 meters by a weight roundabout 4 kg and a frame size of 4 km. It is possible to measure (airborne) the speed of vehicles with radar technology.

4. Sensor fusion for Traffic Data by CCTV Spatial Dimension Traffic has always a spatial dimension. Local accidents spread in all directions. The stationary sensors yield only local measurements. The transformation of local measurements to the transport network is always incorrect. The traffic forecast needs traffic measurements with connection to spatial information.

5. Stationary Sensors In general online traffic data can only be used locally. They are not optimised for real-time transmission. Traffic sensors are not optimized for data fusion. Most systems are passive, they do not need corresponding technology in the vehicles. Most sensors are highly developed and very accurate. Stationary sensors are optimised for many different special tasks. Stationary sensors work with different physical principles.

6. Comparison of Costs FCD = Floating Car Data EO = Earth Observation

7. Comparison of Costs Cross Border Transportation - The new challenge for transportation management

8. Interviews of Specialists The core questions: Is your company presently exploiting satellite based information resources? What would be the most important requirements for a future use of satellites? Which of the proposed MultiSat WebService features are of any importance to your company? If interested in purchasing information, what would be your preferred method of payment? Logistics Automotive industries Traffic management Intelligent transportation systems Research Consultants Local authorities and transportation departments The interview partners have been selected from business range of:

9. Primary Markets

10. Summary  The traffic forecast needs traffic measurements connected with borderless and spatial information.  The system design gives the opportunity to configure the space system according to further customer needs.  The market analysis has shown a promising market demand and volume for MultiSat WebService. We all have to work on the topic of space born traffic data measurement because it is going to be a future theme in transportation research.