EP0941534B1 - Verfahren zur ermittlung von fahrtroutendaten - Google Patents
Verfahren zur ermittlung von fahrtroutendaten Download PDFInfo
- Publication number
- EP0941534B1 EP0941534B1 EP97953607A EP97953607A EP0941534B1 EP 0941534 B1 EP0941534 B1 EP 0941534B1 EP 97953607 A EP97953607 A EP 97953607A EP 97953607 A EP97953607 A EP 97953607A EP 0941534 B1 EP0941534 B1 EP 0941534B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- traffic
- route
- dynamic parameters
- data
- parameters
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0968—Systems involving transmission of navigation instructions to the vehicle
- G08G1/096805—Systems involving transmission of navigation instructions to the vehicle where the transmitted instructions are used to compute a route
- G08G1/096811—Systems involving transmission of navigation instructions to the vehicle where the transmitted instructions are used to compute a route where the route is computed offboard
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0968—Systems involving transmission of navigation instructions to the vehicle
- G08G1/096805—Systems involving transmission of navigation instructions to the vehicle where the transmitted instructions are used to compute a route
- G08G1/096827—Systems involving transmission of navigation instructions to the vehicle where the transmitted instructions are used to compute a route where the route is computed onboard
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0968—Systems involving transmission of navigation instructions to the vehicle
- G08G1/096833—Systems involving transmission of navigation instructions to the vehicle where different aspects are considered when computing the route
- G08G1/096844—Systems involving transmission of navigation instructions to the vehicle where different aspects are considered when computing the route where the complete route is dynamically recomputed based on new data
Definitions
- the invention relates to a method for determining travel route data according to the Preamble of claim 1.
- the document W096 / 29688 describes a method which uses a digital map dynamically of current traffic data measured by "floating cars" changes. There is also one So-called “historical database”, which receives information from inductive loops and with who verifies and reconciles the information.
- the prognosis obtained in this way is due to the lack that through a determined route guidance along a plurality of segments using the in the Control center available actual and forecast traffic data a needed Travel time can be determined, but the targeted vehicle remains at the specified Routing bound even in the event of unforeseeable, disabling events.
- the invention is therefore based on the object of a method of the generic type Specify the type that can take into account current dynamic parameters and is still manageable with simple computing means. It's not just supposed to for planning travel routes and guiding vehicles along planned routes Driving routes are suitable, but also for forecasting activities such as Traffic route planning or to evaluate planned routes (determining the estimated travel time) can be used.
- this ensures that the traffic data is up to date, and the resulting route guidance of vehicles is faster than the actual one Customizable traffic data. That is, the response time from the occurrence of a traffic restricting event through its detection to distribution of route guidance information to vehicles that focus on the Moving traffic restrictions becomes minimal.
- the invention is explained in more detail below on the basis of exemplary embodiments.
- the invention is based on one held in a central control center digital map, in which static and dynamic for the recorded traffic routes Parameters are stored.
- the static parameters at least include structural features of the individual traffic routes, such as number of lanes, Uphill / downhill and road type. It is characteristic of the invention that Route data determined based on the relevant dynamic parameters the dynamic parameters are used only once to specify start values derived from the structural features and henceforth with secure availability dynamic data continuously to the real ones regardless of static parameters Ratios of the respective route sections of the traffic routes are adjusted.
- the dynamic parameters include at least a conductance and a load function the associated traffic route (i.e. the specific one considered Road section).
- the conductance represents a measure of the possible Speed in the chosen traffic route and is preferably from the average speed of the vehicles formed in the respective route section.
- Alternative forms of representation such as average time traveled, time per km or the like of course within the scope of the revelation.
- the load for example the number of vehicles, on the considered Section of a traffic route becomes the possible speed influence.
- the dependence of the conductance on the load is shown by a Load function shown.
- the Load function is the essential classification feature of a traffic route for example as part of the route guidance of vehicles according to the invention, since they do that for a particular traffic route from the current load characteristic relevant to decision determined.
- the load data can from current information as well as from extrapolated or simulated data or come from an experience database, so that in particular forecasts about future traffic developments are possible.
- the load function is expediently as Proximity function described.
- the route sections in the digital map in a computer in the central control center the parameters of the Proximity function assigned. All can be used to parameterize the load function relevant interpolation methods such as straight line or polynomial representation, spline method u. a. be used.
- the main advantage of the method according to the invention is that the Load function not due to formal structural features such as B. the characteristic "Autobahn" is determined.
- the load function is done in a first approach Standard specifications, for example for highways, country roads, etc. defined. Depending on the availability of qualified information, the load function however individually refined. The dynamic is therefore adjusted Parameters to the relevant conditions of the respective route section. Next other formal information such as Speed restrictions, downhill gradients or similar are primarily provided for to learn the actual load function preferably automatically. Every traffic route receives an individual load function "after the best Experience".
- This load function is learned, for example, by using the Measuring equipment equipped vehicles that run along the respective Move traffic route, record data and to the central control center Send processing, and if necessary by additional stationary Measuring devices.
- the high benefit of the invention is the example of a three-lane Highway section are explained.
- the load function is a set of parameters a relevant interpolation method. Because of the structural Features (three lanes, no speed limit) becomes a standard parameter set given that already contain a certain amount of pre-differentiation can. Based on measurement data both on the number of vehicles and on If necessary, the speed becomes a after a sufficient static check Fine-tuned these parameters. In any traffic situation, the Load function based on a few measured data conclusions about the traffic situation in this section of the route.
- the dynamic parameters in definable closed geographic areas manually or also are automatically scaled.
- This scaling can be used particularly advantageously in the case of prematurely known ones Events such as the construction of construction sites on individual traffic routes and in the event of traffic-relevant weather changes for areas of Traffic routes. Otherwise the scaling e.g. by day of the week, time of day and Weather differentiated.
- this feature of the invention is advantageous in traffic simulation and traffic planning applicable. For example, the effect of increasing the Number of lanes for a definable traffic route can be directly simulated.
- the alternative parameter expediently includes in terms of a parameter list, at least the number of alternative traffic routes as well as their quality and length (if necessary, detour length).
- the alternative parameter becomes the same for one Alternative necessary detour set. So the further the detour via Alternative route is, the larger the alternative parameter becomes. This measure can by other factors, such as the number of alternative routes or the capacity of the Alternative routes can be further refined.
- the alternative parameter ultimately evaluates the traffic route according to whether it is worth looking for an alternative route. Each the higher the alternative parameters, the less the effort for the search for an alternative.
- the alternative parameter can be an average over many possible routes represent. These can be, for example, through experience or through suitable ones Simulations are generated.
- the advantage in using this Classification characteristic lies in the drastic reduction of the necessary Computing effort to determine alternative routes.
- Another option for generating this parameter is an evaluation the topology of the underlying transport network map.
- relevant Processes are used to identify coherent, well-connected large areas. The These large areas are bordered by only a few traffic connections traverses. These access roads form the critical routes that run through one distinguish high alternative parameters. Examples of this are large cities, however also regional agglomerations.
- This classification feature can be advantageous particularly when controlling the internal computing effort, in controlling information collection, in particular the traffic situation recording, but also in the representation of the relevant information.
- the method according to the invention is advantageous in the context of an offboard route guidance system applied, in which a route recommendation from a control center is determined as route data, the decision about which Traffic routes the vehicle should be guided as part of the route recommendation, primarily or exclusively on the basis of the relevant dynamic parameters is hit.
- the corresponding route guidance information can, for example are transmitted to the vehicle by means of cellular mobile radio.
- the procedure can but also find advantageous use in an onboard route guidance system for whom the route planning and the output of route guidance information are self-sufficient in Vehicle. With such a system, it may be advisable to use before or to transmit the planned route to the headquarters during a trip, according to the Assess the current relevant dynamic parameters and change them if necessary and transfer the result back to the vehicle, then the Carrying out route guidance autonomously.
- the evaluation alternative route suggestions expediently based on the complexity parameter and if necessary, further criteria, in particular travel time and distance traveled.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Traffic Control Systems (AREA)
- Navigation (AREA)
- Optical Communication System (AREA)
Description
Claims (15)
- Verfahren zur Ermittlung von Fahrtroutendaten, insbesondere im Rahmen der Zielführung eines Fahrzeuges, unter Verwendung einer in einer zentralen Leitstelle vorgehaltenen digitalen Karte, in der für die erfaßten Verkehrswege streckenabschnittsweise statische und dynamische Parameter hinterlegt werden, wobei die statischen Parameter zumindest bauliche Merkmale des jeweiligen
Verkehrsweges umfassen,
dadurch gekennzeichnet,daß die dynamischen Parameter zumindest einen Leitwert und eine Lastfunktion des jeweiligen Streckenabschnitts des Verkehrsweges umfassen, wobei der leitwert ein Maß für die mögliche Geschwindigkeit in dem gewählten Verkehrsweg ist, und die Lastfunktion die Abhängigkeit des Leitwertes von der Last kennzeichnet,daß die dynamischen Parameter einmalig zur Vorgabe von Startwerten aus den baulichen Merkmalen abgeleitet werden und fortan bei sicherer Verfügbarkeit dynamischer Daten unabhängig von statischen Parametern kontinuierlich an die realen Verhältnisse der jeweiligen Streckenabschnitte der Verkehrswege angepaßt werden unddaß die Fahrtroutendaten auf der Basis der relevanten dynamischen Parameter ermittelt werden. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet,
daß der Leitwert aus der mittleren Geschwindigkeit der Fahrzeuge im jeweiligen Streckenabschnitt der Verkehrswege gebildet wird und daß die Lastfunktion die Abhängigkeit des Leitwerts von der Anzahl der Fahrzeuge auf den jeweiligen Streckenabschnitt beschreibt. - Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß die Lastfunktion als Näherungsfunktion, insbesondere in Polynominaldarstellung, beschrieben wird und jedem Streckenabschnitt die Parameter der Näherungsfunktion zugeordnet werden. - Verfahren nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,daß die ermittelten Fahrtroutendaten eine Routenempfehlung beinhalten unddaß die Entscheidung, über welche Verkehrswege das Fahrzeug im Rahmen der Routenempfehlung zum Ziel geführt wird, vorrangig oder ausschließlich auf der Basis der relevanten dynamischen Parameter getroffen wird. - Verfahren nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet,
daß als relevante dynamische Parameter die jeweils aktuellen dynamischen Parameter herangezogen werden. - Verfahren nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet,
daß die dynamischen Parameter in vorgebbaren geschlossenen geographischen Bereichen ereignisbezogen manuell oder automatisch skaliert werden. - Verfahren nach Anspruch 6,
dadurch gekennzeichnet,
daß die Skalierung, die insbesondere nach Wochentag, Tageszeit und/oder Witterung vordiffenziert sein kann, bei verkehrsrelevanten Wetteränderungen und vorzeitig bekannten Ereignissen, insbesondere bei Ferienbeginn, bei Einrichtung von Baustellen und bei Großveranstaltungen, anhand von Standardvorgaben aus einer Erfahrungsdatenbank erfolgt. - Verfahren nach einem der Ansprüche 4 bis 7,
dadurch gekennzeichnet,
daß alternative Verkehrswege zur Umgehung des jeweiligen Verkehrsweges ermittelt werden und Eingang in einen Alternativenparameter finden, der dem jeweiligen Verkehrsweg in der digitalen Karte zugeordnet wird. - Verfahren nach Anspruch 8,
dadurch gekennzeichnet,
daß der Alternativenparameter im Sinne einer Parameterliste zumindest die Anzahl der alternativen Verkehrswege sowie deren Güte und Länge umfaßt. - Verfahren nach Anspruch 8 oder 9,
dadurch gekennzeichnet,
daß der Alternativenparameter zumindest für Verkehrswege ermittelt wird, deren Verkehrsfluß wiederholt temporären Beschränkungen unterlegen hat. - Verfahren nach einem der Ansprüche 4 bis 10,
dadurch gekennzeichnet,daß aufeinanderfolgende Verkehrswege mit geringem Verzweigungsgrad zu Verkehrswegkomplexen zusammengefaßt und zur Zielführung als ein Verkehrsweg berücksichtigt werden unddaß in Abhängigkeit vom Verkehrsweg und vom Verzweigungsgrad des Verkehrsflusses an Knotenpunkten aufeinanderfolgender Verkehrswege jedem der aufeinanderfolgenden Verkehrswege ein Komplexitätsparameter zugeordnet wird. - Verfahren nach Anspruch 11,
dadurch gekennzeichnet,
daß bei der Routenplanung alternative Routenvorschläge anhand des Komplexitätsparameters und gegebenenfalls weiterer Kriterien, insbesondere Fahrtzeit und Fahrtstrecke, bewertet werden. - Verfahren nach einem der Ansprüche 1 bis 12,
dadurch gekennzeichnet,
daß die Anpassung der dynamischen Parameter im Sinne eines selbstlernenden Systems erfolgt, wobei aktuelle Verkehrsdaten erhoben werden, die Verträglichkeit dieser Daten mit den aktuellen dynamischen Parametern überprüft wird und bei hinreichend starken Abweichungen die dynamischen Parameter angepaßt werden. - Verfahren nach Anspruch 13,
dadurch gekennzeichnet,
daß die Erhebung zumindest eines Teils der Verkehrsdaten, insbesondere der in einem Streckenabschnitt aktuellen Durchschnittsgeschwindigkeit, durch im Verkehrsstrom mitschwimmende Fahrzeuge erfolgt. - Verfahren nach einem der Ansprüche 1 bis 14,
dadurch gekennzeichnet,
daß anhand der dynamischen Parameter Verkehrsprognosen zur Verkehrswegeplanung abgeleitet oder Fahrtzeiten für geplante Fahrtrouten prognostiziert werden, wobei aus Lastdaten, die extrapoliert sind oder aus einer Erfahrungsdatenbank entnommen werden, über die jeweilige Lastfunktion zukünftige Leitwerte ermittelt werden.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19650844A DE19650844C2 (de) | 1996-11-27 | 1996-11-27 | Verfahren zur Ermittlung von Fahrtroutendaten |
DE19650844 | 1996-11-27 | ||
PCT/DE1997/002819 WO1998024080A1 (de) | 1996-11-27 | 1997-11-26 | Verfahren zur ermittlung von fahrtroutendaten |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0941534A1 EP0941534A1 (de) | 1999-09-15 |
EP0941534B1 true EP0941534B1 (de) | 2001-07-25 |
Family
ID=7813954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97953607A Expired - Lifetime EP0941534B1 (de) | 1996-11-27 | 1997-11-26 | Verfahren zur ermittlung von fahrtroutendaten |
Country Status (7)
Country | Link |
---|---|
US (1) | US6216088B1 (de) |
EP (1) | EP0941534B1 (de) |
JP (1) | JP2001504590A (de) |
AT (1) | ATE203613T1 (de) |
DE (2) | DE19650844C2 (de) |
ES (1) | ES2158614T3 (de) |
WO (1) | WO1998024080A1 (de) |
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US9832610B2 (en) | 1994-11-29 | 2017-11-28 | Apple Inc. | System for collecting, analyzing, and transmitting information relevant to transportation networks |
DE19914041A1 (de) * | 1999-03-27 | 2000-09-28 | Bosch Gmbh Robert | Verfahren zur Information von Autofahrern |
DE19916967C1 (de) * | 1999-04-15 | 2000-11-30 | Daimler Chrysler Ag | Verfahren zur Aktualisierung einer Verkehrswegenetzkarte und kartengestütztes Verfahren zur Fahrzeugführungsinformationserzeugung |
US6498986B1 (en) * | 1999-06-14 | 2002-12-24 | International Business Machines Corporation | Method and system for enabling automatic vehicle routing |
DE19933639A1 (de) * | 1999-07-17 | 2001-01-18 | Bosch Gmbh Robert | Verfahren zur Berechnung einer Route von einem Start- zu einem Zielort |
US6385539B1 (en) | 1999-08-13 | 2002-05-07 | Daimlerchrysler Ag | Method and system for autonomously developing or augmenting geographical databases by mining uncoordinated probe data |
US6353795B1 (en) * | 2000-02-01 | 2002-03-05 | Infospace, Inc. | Method and system for matching an incident to a route |
US6480783B1 (en) * | 2000-03-17 | 2002-11-12 | Makor Issues And Rights Ltd. | Real time vehicle guidance and forecasting system under traffic jam conditions |
DE10015936C2 (de) | 2000-03-30 | 2002-06-13 | Bosch Gmbh Robert | Verfahren zur Strassenklassenbewertung in Navigationssystemen |
US6308132B1 (en) * | 2000-06-13 | 2001-10-23 | Honeywell International Inc. | Method and apparatus for displaying real time navigational information |
DE10030931C2 (de) * | 2000-06-24 | 2002-06-13 | Bosch Gmbh Robert | Verfahren zur Fahrtroutenberechnung in einem Navigationssystem |
DE10031787A1 (de) * | 2000-07-04 | 2002-01-24 | Daimler Chrysler Ag | Assistenzsystem zur Auswahl von Strecken |
US20020144143A1 (en) * | 2000-12-15 | 2002-10-03 | International Business Machines Corporation | Method and system for network management capable of restricting consumption of resources along endpoint-to-endpoint routes throughout a network |
US6662106B2 (en) * | 2001-04-13 | 2003-12-09 | Hewlett-Packard Development Company, L.P. | Navigation system that takes into account dynamic road conditions |
US6558164B2 (en) * | 2001-06-04 | 2003-05-06 | Hewlett-Packard Development Company, L.P. | Method and system for simulating travel |
DE10162335A1 (de) * | 2001-12-18 | 2003-07-10 | Zf Lemfoerder Metallwaren Ag | Verfahren und Vorrichtung zur Erzeugung und Aktualisierung einer Wege- und/oder Wegezustandskarte |
CA2493973C (en) * | 2003-07-17 | 2008-10-21 | Harman Becker Automotive Systems Gmbh | Route calculations around traffic obstacles using marked diversions |
DE102004012041B4 (de) | 2004-03-10 | 2021-09-16 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Fahrzeitermittlung in einem Navigationssystem für Kraftfahrzeuge |
DE102004032499B3 (de) * | 2004-07-05 | 2005-12-08 | Siemens Ag | Verfahren und Routenplanungssystem zur Generierung und Speicherung von für eine dynamische Routenplanung benötigten Daten |
DE102005033753A1 (de) * | 2005-07-15 | 2007-01-18 | Ptv Ag | Verfahren zum Berechnen einer geeigneten Strecke und Navigationssystem |
US8290699B2 (en) * | 2007-09-28 | 2012-10-16 | Clarion Co., Ltd. | System and method for geographic interpolation of traffic data |
CN105074793A (zh) | 2013-03-15 | 2015-11-18 | 凯利普公司 | 用于车辆路径规划和交通管理的车道级车辆导航 |
DE102013005828A1 (de) * | 2013-04-04 | 2014-10-09 | Man Truck & Bus Ag | Anordnung zur Warnung vor und/oder zur Berücksichtigung von nutzfahrzeugrelevanten Fahreinschränkungen |
DE102013017857A1 (de) | 2013-10-26 | 2014-07-03 | Daimler Ag | Verfahren zum Vorhalt von Neubaustrecken in einem Navigationssystem eines Kraftfahrzeuges und ein Kraftfahrzeug |
DE102014006551A1 (de) | 2014-05-06 | 2015-11-12 | Audi Ag | Verfahren zum Erstellen einer Schaltprognose für eine Ampel |
CN108009972B (zh) * | 2017-10-24 | 2021-09-28 | 北京交通大学 | 一种基于多源数据校核的多方式出行o-d需求估计方法 |
CN112129305B (zh) * | 2020-09-22 | 2023-11-24 | 腾讯科技(深圳)有限公司 | 车辆导航方法、系统、装置和存储介质 |
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-
1996
- 1996-11-27 DE DE19650844A patent/DE19650844C2/de not_active Expired - Fee Related
-
1997
- 1997-11-26 EP EP97953607A patent/EP0941534B1/de not_active Expired - Lifetime
- 1997-11-26 JP JP52415798A patent/JP2001504590A/ja active Pending
- 1997-11-26 ES ES97953607T patent/ES2158614T3/es not_active Expired - Lifetime
- 1997-11-26 WO PCT/DE1997/002819 patent/WO1998024080A1/de active IP Right Grant
- 1997-11-26 DE DE59704147T patent/DE59704147D1/de not_active Expired - Lifetime
- 1997-11-26 AT AT97953607T patent/ATE203613T1/de not_active IP Right Cessation
- 1997-11-26 US US09/308,857 patent/US6216088B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE59704147D1 (de) | 2001-08-30 |
DE19650844C2 (de) | 2003-09-25 |
ES2158614T3 (es) | 2001-09-01 |
US6216088B1 (en) | 2001-04-10 |
ATE203613T1 (de) | 2001-08-15 |
EP0941534A1 (de) | 1999-09-15 |
DE19650844A1 (de) | 1998-06-04 |
JP2001504590A (ja) | 2001-04-03 |
WO1998024080A1 (de) | 1998-06-04 |
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