Floating car data
Floating Car Data ( FCD ) refers to a system proposal with data that is generated from a vehicle that is currently involved in traffic. This includes both data on the state of driving and status data of the location when standing, for example in a traffic jam, in front of traffic lights or in a waiting area. A data record contains at least the time stamp and the current location coordinates . By using the floating car data process (FCD), cars become mobile sensors or software agents .
System elements
A vehicle that is to generate FCD requires a GPS device, a cellular system ( GSM , UMTS or LTE-based ) and a terminal that processes the data for sending to the FCD center, incoming data from the FCD center processed and displayed on a screen on the dashboard.
The FCD headquarters is a telematics service provider that receives the data from the FCD participants and ideally anonymizes them. Due to positioning inaccuracies, etc., the map must first be fitted into a digital map. Data fusion with other sources, for example stationary sensors , can also be used to generate traffic information . If a traffic obstacle or problem can be identified, the FCD control center sends a signal via mobile radio with the appropriate alternative options to the individual FCD participants. The end device checks the received data for plausibility, that is, it checks the current location using GPS and the selected route. If the problem lies on the route, the alternative route from the FCD control center is displayed on the screen. The system only picks up those data that are relevant to the driver.
In pilot projects in Berlin and Vienna, taxi fleets in particular were used to generate FCD, as they already have the necessary equipment and headquarters for fleet management tasks . The term coined for this is Taxi-FCD.
In addition to commercial providers, research institutions are also dealing with the topic. The DLR can access the taxi FCD from several cities and thus generate information about the traffic situation via the Cityrouter application.
Extended Floating Car Data (XFCD)
XFCD is an extension of FCD: Since there are many useful assistance systems such as ABS , ASR , ESP , rain sensors and much more in a modern automobile , BMW is developing an improved variant of the FCD, namely the XFCD. This is where the end device receives all the data from the car electronics and evaluates it for different situations according to certain algorithms. With the help of ABS and ESP, for example, it recognizes that there is black ice at a point that has just passed. The device sends this information to the FCD center based on the situation. This examines the data again for plausibility by examining whether the same results were sent from other FCD participants from this point. If this is the case, the control center sends out a warning for this position so that a motor vehicle driver can adjust to this new, dangerous situation in good time. In this way, drivers can be warned in good time of dangers such as ice, rain and fog, which in turn helps to prevent serious accidents.
criticism
Status information about the server function of an FCD control center only supplies sluggish data with a sufficiently long validity and correspondingly low currency. The potential for fast status information through communication between neighboring vehicles is not evaluated by the pilot concepts, since such communication cannot generate any throughput (traffic) in the networks of the mobile radio providers involved.
Offering flow data from traffic as a chargeable service will remain unattractive for private users. The benefit for professional transport remains doubtful because of the heterogeneous information structures with stationary sensors and sensors connected to the vehicle as well as telephone messages. In relation to the number of road users on German roads, the number of users of FCD services is negligible. The publications on customer benefit only provide marketing data, but no evidence of sufficient benefit.
See also
Web links
- ↑ FCD pilot test in Berlin ( memento of the original from September 29, 2010 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ^ Data from taxis in Vienna
- ↑ DLR: Taxi fleet test in Berlin - DLR is testing a new method for recording urban traffic. October 4, 2016, accessed January 5, 2019 .
- ^ DLR: Traffic Management. Retrieved January 5, 2019 .
- ↑ DLR: With the tablet behind the wheel. July 21, 15, accessed January 4, 2019 .
