TAILIEUCHUNG - Intelligent Vehicle Technology And Trends Episode 2 Part 5

Tham khảo tài liệu 'intelligent vehicle technology and trends episode 2 part 5', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 262 Extending the Information Horizon Through Floating Car Data Systems Communications costs were assessed at a high level. Simplicity at the vehicle level resulted in higher communication loads between the probe and server compared to an implementation in which the probe vehicle calculates link travel time onboard. Short message service SMS over the GSM cellular network was used in the pilot but this is not seen as feasible for deployment due to cost. At 1 10 the price of SMS GPRS is seen as an attractive alternative. The OPTIS final report called for OPTIS to be followed by a large-scale demonstration project in Gothenburg and Stockholm. The recommendation called for a total of 3 of all vehicles in Gothenburg and Stockholm to be equipped with FCD equipment. The cost was estimated at approximately 5 million. Deployment activity along these lines is under way. Smart FCD FCD Collection via Satellite 10 The European Space Agency has completed a feasibility test with a small number of vehicles in the Rotterdam area using satellite communication to collect FCD data from vehicles. The advantage of the satellite approach of course is that the entire road network is covered by the satellite footprint. Researchers concluded that this approach to the collection of traffic information is technically feasible. Even though shadowing by large buildings was a concern the data gathered shows that the coverage of the satellite system is adequate even in densely urbanized areas. Further analysis showed that traffic jams were detected effectively with the algorithms used. The project team noted that compared to conventional detection methods this concept offers better coverage and better data at competitive costs. ProbelT 11 In the United Kingdom the ProbeIT project focused on vehicles communicating position-related information to create a dynamic roadmap database and thereby enable applications such as traffic management information and speed advice. The project completed in 2004 .

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