EP0292897A2 - Méthode d'évaluation du temps de voyage mesuré dans des véhicules au moyen d'un dispositif de guidage et d'informations dans un système de guidage et d'informations - Google Patents
Méthode d'évaluation du temps de voyage mesuré dans des véhicules au moyen d'un dispositif de guidage et d'informations dans un système de guidage et d'informations Download PDFInfo
- Publication number
- EP0292897A2 EP0292897A2 EP88108163A EP88108163A EP0292897A2 EP 0292897 A2 EP0292897 A2 EP 0292897A2 EP 88108163 A EP88108163 A EP 88108163A EP 88108163 A EP88108163 A EP 88108163A EP 0292897 A2 EP0292897 A2 EP 0292897A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- traffic
- travel
- time
- route
- guidance
- 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.)
- Granted
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Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
-
- 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
- G08G1/096833—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 evaluating the travel time measured in vehicles by means of a guidance and information device in a guidance and information system for individual traffic, with a digitized road network map that can be stored in a location and navigation computer of the guidance and information device, two of which A route section is formed in the nodes of the road network and a partial route is formed from two guidance points, each with its own address, and the travel time is measured with a travel time measuring device of the guidance and information device.
- Traffic management and information systems are generally known. With such a control system, individual vehicles can be guided individually from a respective starting point to an inputable destination.
- European patent specification 00 21 060 describes a guidance system for individual traffic, in which guidance information for all vehicles in question is radiated from individual guidance beacons to all passing vehicles. The recommendation for a specific destination is selected in the vehicle.
- the guide beacons are each arranged at greater distances from one another. The routes between them are described as a sequence of path vectors. It is provided that guidance beacons are given to the vehicles in the form of a chain of guidance vectors.
- European patent 00 29 201 describes a method for recording traffic data in a guidance and information system for individual traffic.
- the known method describes a travel time measuring device in the vehicle with which the travel time is measured individually between the individual guide points of a guide vector chain. The travel time within a section or section of a route is made up of several times.
- a standstill which may be due to traffic, such as is caused, for example, by traffic jams or stops in front of traffic signals.
- the standstill can also not be due to traffic, as can be caused, for example, by stopping with the engine running, because quick cigarettes or a newspaper are fetched or because, for example, a taxi driver pays the passenger with the engine running.
- Falsified travel times determined in this way are, however, not meaningful if travel time forecasts and situation-related route optimizations are to be created with the aid of a central control computer.
- it has already been proposed to reduce such false travel times by averaging the measured values of several vehicles.
- smoothing inevitably requires longer reaction times to real traffic jams. Delays in reaction are undesirable, however, because the benefits of a dynamic traffic control system depend to a large extent on its ability to react quickly to unexpected traffic jams.
- This object is achieved in such a system in that the congestion time contained in the travel time per partial route is calculated from the sum of all time intervals at which the vehicle speed is below a predetermined limit speed, that in the location and navigation computer the number of deceleration processes below Limit speed is measured for each section and a weight factor is formed, that the respective weight factors associated with the congestion times are transmitted to a central traffic and information control computer, that the respective travel and congestion time is evaluated as a function of the size of the weight factor, and that with These evaluated travel and traffic jam times, on the one hand, new alternative route recommendations are worked out and, on the other hand, they are evaluated for traffic light control systems.
- an analysis of the vehicle movement forms a weight factor that describes the credibility of a traffic jam message.
- the measured congestion times are evaluated depending on the size of the associated weight factor and only congestion times with sufficiently large weight factors are used for further processing in the host computer.
- the weight factor For the method according to the invention, it is expedient to form a plurality of speed classes to form the weight factor, which, for example, comprise a speed range of 5 km each per hour. Six speed ranges result in a limit speed of 30 km per hour. The number of transitions from one speed range to the next lower speed range is now advantageously determined, this number of transitions corresponding to the weight factor.
- the weighting factors for evaluating the measured congestion time are standardized by dividing the number of transitions from one speed range to a next lower one in the area of a partial distance by the number of transitions that are necessary for a stopping process from a speed exceeding the limit speed is inevitably given. If the standardized weight factor is greater than or equal to a limit value, for example two, the associated congestion time is assessed as the real congestion time. If the normalized weight factor has a value which is below this limit value, for example two, the congestion time can be evaluated in a known manner by continuously averaging.
- the weight factors added to the traffic jam time measurements are used to assess the credibility of travel times.
- the congestion times are measured separately for each section, which are limited by two control points, which are generally two signaling systems. Travel times are generally for entire sections of the route, i.e. Routes between two nodes in the main node network, measured. They can contain several control points or light signal systems.
- the addition of the weight factors of all congestion times of a route section in the central control computer makes sense, because the weight factors are nothing else than the number of (standard) deceleration processes during the slow movement of a pent-up column.
- the functional principle of the control and information system is shown schematically in FIG.
- the vehicle FZ there is a guidance and information device LIE which has a locating device 0 with a magnetic field probe MS and a wheel pulse generator RIG, and a navigation device N with an operating device BG, with a travel time measuring device RZM and with an infrared transmitter SF and an infrared receiver EF.
- the operating device BG has an input keyboard ET, a target memory ZSp and, for example, a direction indicator ANZ.
- the common travel and congestion times, including the weight factors, are transmitted via the vehicle transmitter SF of the vehicle FZ to the beacon LB, which is mounted on the roadside, for example on a mast SM on a light signal system LSA.
- beacon LB is connected to the beacon electronics BE, which can be accommodated in the VSG traffic switching device.
- the traffic switching device VSG is connected to the traffic and information control computer VLR, which is located in a traffic control and information center VLZ, via a data line DL.
- VLR traffic and information control computer
- Fig. 2 shows the scheme of a road network in a limited area.
- The are shown Intersections or nodes K1, K2 and K3, each with a beacon.
- their functions of sending control information (LB1, LB2) and receiving time measurements (MB1, MB2, MB3) are shown separately.
- a vehicle FZ1 approaching the node K1 receives the guidance recommendation from the beacon LB1 to use the route to the node K2 described by the guidance point LP1, LP2 to LP5.
- the control and information device LIE in the vehicle FZ measures the respective travel times between the mentioned control points LP1 to LP5.
- the node K2 it transmits the measured travel times to the beacon MB2, which in turn forwards it to the traffic control computer VLR.
- the vehicle FZ3 is routed from the node K1 via the through the control points LP1, LP2, LP3 and LP7 to the node K3 and there reports the measuring beacon MB3 which sections and which times it has in common on these. Further details of the known travel time measurement are described in European patent specification 00 29 201.
- the speed v (km / h) is plotted over the distance s covered in meters (m).
- the congestion time tSt per section is determined from the sum of all time intervals tStn, tSt (n + 1) at which the vehicle travels at a speed which is below a certain limit speed vSt.
- FIG. 4 also shows a speed profile of a vehicle over the distance s using an example of a measurement run in the backflow area in front of an overloaded traffic light system.
- the travel time tR is also plotted as a function of the path s in FIG.
- the path s is plotted in meters (m) on the abscissa, the zero point being entered on the right and the stop line HL being drawn in on the left of the zero point (traffic signal system).
- the speed v is plotted on the right ordinate in kilometers per hour (kmih).
- the travel time tR in seconds (sec) is plotted on the left coordinate.
- FIG. 5 also shows a speed profile, for a test run of a vehicle that stops once and then has to wait a second time in front of a traffic light system at the stop line HL, it can be seen that a completely different situation must exist.
- the vehicle also stops about 520 m in front of the stop line using the example of FIG. 5.
- it only starts again after a time of approx. Four minutes (240 sec), before finally having to wait in front of the traffic light system (HL) in order to continue driving after about 40 more seconds.
- the travel time is approximately 360 seconds.
- Fig. 4 it is due to traffic
- Fig. 5 it is most likely due to other reasons.
- the control system to a traffic-related congestion must recognize and respond IN THE OWNER T prechend
- the second case it would be wrong and an alternative route recommendation unfounded.
- the typical difference between the two routes is striking.
- the speed profile v in FIG. 4 is characterized by a relatively large number of acceleration and deceleration processes.
- the speed curve v shown in FIG. 5 even runs through a larger speed range between the two stops, but has significantly fewer changes.
- the method according to the invention therefore measures the number of transitions from one speed class to the next lower one and uses this as a weight factor for evaluating the measured congestion time.
- a standardized weighting factor GN In order to obtain smaller and clearer numerical values, it is advisable to form a standardized weighting factor GN.
- Each congestion time TSt which is measured by the navigation computer ONR and the travel time measuring devices RZM in the vehicles FZ, is supplemented with a weight factor G or GN.
- the weight factors can be calculated relatively easily from the temporal density of the path impulses in the vehicle navigation computer. Measurements with normalized weight factors of 0 and 1 are expediently dealt with by continuous averaging, as is already known.
- the frequency of occurrence of standardized weighting factors GN> - 1 can be used for a first rough assessment of the quality of the green wave.
- Weight factors of GN k 2 mean that vehicles entering the backwater area of an intersection with a red signal cannot pass through the next green. Weight factors of GN k-2 are therefore used to record traffic jam time lines in the traffic control computer for all the entrances to the traffic light system in question. Significantly different weighting factors for the traffic flows at an intersection can be a clear indication, in contrast to the normally measured congestion time, that the green time distribution no longer corresponds to the actual traffic volume.
- the measured travel time is also evaluated with the weight factors added to the traffic jam time measurements.
- the congestion times are measured separately for each section, which is limited by two control points.
- the travel time is for entire sections of the route, i.e. the distance between two nodes in the road network, measured.
- the travel times can include several guiding points or light signal systems.
- the weighting factors of all congestion times of a section of the route are added in the central control computer. An addition makes sense because the weight factors are nothing other than the number of (standard) deceleration processes in a pent-up column.
- the length of a traffic jam can also be derived indirectly if one assumes that the speed curve v shown is typical for a pent-up column according to FIG. 4, and that a switching cycle of the signal system of e.g.
- the weight factor GN increases by one value in each 100 m of stowage length.
- the sum of the weight factors for a route section or a partial route can therefore serve as an indirect measure of the amount of the pent-up vehicles on this route.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Mathematical Physics (AREA)
- Traffic Control Systems (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT8888108163T ATE104788T1 (de) | 1987-05-25 | 1988-05-20 | Verfahren zur bewertung der in fahrzeugen mittels einer leit-und informationseinrichtung gemessenen reisezeit in einem leit- und informationssystem. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3717550 | 1987-05-25 | ||
DE3717550 | 1987-05-25 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0292897A2 true EP0292897A2 (fr) | 1988-11-30 |
EP0292897A3 EP0292897A3 (en) | 1990-05-09 |
EP0292897B1 EP0292897B1 (fr) | 1994-04-20 |
Family
ID=6328343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88108163A Expired - Lifetime EP0292897B1 (fr) | 1987-05-25 | 1988-05-20 | Méthode d'évaluation du temps de voyage mesuré dans des véhicules au moyen d'un dispositif de guidage et d'informations dans un système de guidage et d'informations |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0292897B1 (fr) |
AT (1) | ATE104788T1 (fr) |
DE (1) | DE3889144D1 (fr) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2642875A1 (fr) * | 1989-02-03 | 1990-08-10 | Urba 2000 | Systeme de collecte et de diffusion d'informations pour automobilistes |
EP0516215A1 (fr) * | 1991-05-27 | 1992-12-02 | Koninklijke Philips Electronics N.V. | Procédé pour collecter de l'information routière et dispositif pour la mise en oeuvre de ce procédé |
US5402117A (en) * | 1991-05-27 | 1995-03-28 | U.S. Philips Corporation | Method of collecting traffic information, and system for performing the method |
EP0849718A1 (fr) * | 1996-12-16 | 1998-06-24 | MANNESMANN Aktiengesellschaft | Procédé et dispositif pour transmettre des informations routières relatives à un réseau de transport et représentant des situations routières d'un centre de trafic à un terminal dans un véhicule |
WO1998059329A1 (fr) | 1997-06-24 | 1998-12-30 | Siemens Aktiengesellschaft | Procede pour determiner la duree d'un trajet en fonction du moment de la journee |
WO2001018770A1 (fr) * | 1999-09-08 | 2001-03-15 | Robert Bosch Gmbh | Procede pour faire fonctionner un systeme de navigation destine a un vehicule automobile |
WO2001075397A1 (fr) * | 2000-03-30 | 2001-10-11 | Robert Bosch Gmbh | Procede d'evaluation de classes routieres dans des systemes de navigation |
EP1217331A1 (fr) * | 2000-12-20 | 2002-06-26 | Pioneer Corporation | Méthode et système pour fixer le temps de trajet et méthode et système de calcul de route et son utilisation |
AT500265A1 (de) * | 2004-05-03 | 2005-11-15 | E & C Engineering & Consulting | Verfahren zur bemessung von mautgebühren |
EP0815547B2 (fr) † | 1995-03-23 | 2006-08-30 | T-Mobile Deutschland GmbH | Procede et dispositif de determination d'informations dynamiques sur la circulation |
AU2005100125B4 (en) * | 2005-02-11 | 2006-11-30 | Mojarrabi, Bahram Mr | Scale free network of urban traffic |
WO2007012566A2 (fr) * | 2005-07-27 | 2007-02-01 | Siemens Aktiengesellschaft | Procede, systeme et unite de commande servant a la navigation d'un vehicule dans un reseau routier |
DE102005035431B3 (de) * | 2005-07-28 | 2007-04-19 | Siemens Ag | Navigationsverfahren |
CN113903169A (zh) * | 2021-08-23 | 2022-01-07 | 深圳市金溢科技股份有限公司 | 一种交通优化方法、装置、电子设备及存储介质 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19964644B3 (de) * | 1999-04-16 | 2015-02-05 | Deutsche Telekom Ag | Verfahren zum Erkennen von Stausituationen auf Straßen und Fahrzeuggeräte mit einer Einheit zur Durchführung des Verfahrens |
DE19917154B4 (de) * | 1999-04-16 | 2013-09-05 | Deutsche Telekom Ag | Verfahren zum Erkennen von Stausituationen auf Straßen und Fahrzeuggeräte mit einer Einheit zur Durchführung des Verfahrens |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0021060A1 (fr) * | 1979-06-11 | 1981-01-07 | Siemens Aktiengesellschaft | Système de guidage pour la circulation individuelle |
EP0025388A1 (fr) * | 1979-09-07 | 1981-03-18 | Thomson-Csf | Dispositif de mesure pour un indicateur de circulation et système de signalisation comportant un tel dispositif |
EP0029201A1 (fr) * | 1979-11-13 | 1981-05-27 | Siemens Aktiengesellschaft | Procédé pour la mesure des trafic routier dans un système de guidage et d'information pour le trafic individuel |
-
1988
- 1988-05-20 AT AT8888108163T patent/ATE104788T1/de active
- 1988-05-20 DE DE3889144T patent/DE3889144D1/de not_active Expired - Fee Related
- 1988-05-20 EP EP88108163A patent/EP0292897B1/fr not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0021060A1 (fr) * | 1979-06-11 | 1981-01-07 | Siemens Aktiengesellschaft | Système de guidage pour la circulation individuelle |
EP0025388A1 (fr) * | 1979-09-07 | 1981-03-18 | Thomson-Csf | Dispositif de mesure pour un indicateur de circulation et système de signalisation comportant un tel dispositif |
EP0029201A1 (fr) * | 1979-11-13 | 1981-05-27 | Siemens Aktiengesellschaft | Procédé pour la mesure des trafic routier dans un système de guidage et d'information pour le trafic individuel |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0384794A1 (fr) * | 1989-02-03 | 1990-08-29 | Urba 2000 | Système de collecte et de diffusion d'informations sur la circulation et le stationnement de véhicules de transport, notamment pour automobilistes |
FR2642875A1 (fr) * | 1989-02-03 | 1990-08-10 | Urba 2000 | Systeme de collecte et de diffusion d'informations pour automobilistes |
EP0516215A1 (fr) * | 1991-05-27 | 1992-12-02 | Koninklijke Philips Electronics N.V. | Procédé pour collecter de l'information routière et dispositif pour la mise en oeuvre de ce procédé |
US5402117A (en) * | 1991-05-27 | 1995-03-28 | U.S. Philips Corporation | Method of collecting traffic information, and system for performing the method |
EP0815547B2 (fr) † | 1995-03-23 | 2006-08-30 | T-Mobile Deutschland GmbH | Procede et dispositif de determination d'informations dynamiques sur la circulation |
EP0849718A1 (fr) * | 1996-12-16 | 1998-06-24 | MANNESMANN Aktiengesellschaft | Procédé et dispositif pour transmettre des informations routières relatives à un réseau de transport et représentant des situations routières d'un centre de trafic à un terminal dans un véhicule |
WO1998059329A1 (fr) | 1997-06-24 | 1998-12-30 | Siemens Aktiengesellschaft | Procede pour determiner la duree d'un trajet en fonction du moment de la journee |
WO2001018770A1 (fr) * | 1999-09-08 | 2001-03-15 | Robert Bosch Gmbh | Procede pour faire fonctionner un systeme de navigation destine a un vehicule automobile |
US6711498B1 (en) | 1999-09-08 | 2004-03-23 | Robert Bosch Gmbh | Method for operating a navigation system for a vehicle |
WO2001075397A1 (fr) * | 2000-03-30 | 2001-10-11 | Robert Bosch Gmbh | Procede d'evaluation de classes routieres dans des systemes de navigation |
US6640183B2 (en) | 2000-03-30 | 2003-10-28 | Robert Bosch Gmbh | Method for the evaluation of road classification in navigation systems |
EP1217331A1 (fr) * | 2000-12-20 | 2002-06-26 | Pioneer Corporation | Méthode et système pour fixer le temps de trajet et méthode et système de calcul de route et son utilisation |
US6915207B2 (en) | 2000-12-20 | 2005-07-05 | Pioneer Corporation | Method and system for setting travel time and method and system for route calculation with use thereof |
AT500265A1 (de) * | 2004-05-03 | 2005-11-15 | E & C Engineering & Consulting | Verfahren zur bemessung von mautgebühren |
AU2005100125B4 (en) * | 2005-02-11 | 2006-11-30 | Mojarrabi, Bahram Mr | Scale free network of urban traffic |
WO2007012566A2 (fr) * | 2005-07-27 | 2007-02-01 | Siemens Aktiengesellschaft | Procede, systeme et unite de commande servant a la navigation d'un vehicule dans un reseau routier |
WO2007012566A3 (fr) * | 2005-07-27 | 2007-03-29 | Siemens Ag | Procede, systeme et unite de commande servant a la navigation d'un vehicule dans un reseau routier |
DE102005035431B3 (de) * | 2005-07-28 | 2007-04-19 | Siemens Ag | Navigationsverfahren |
CN113903169A (zh) * | 2021-08-23 | 2022-01-07 | 深圳市金溢科技股份有限公司 | 一种交通优化方法、装置、电子设备及存储介质 |
Also Published As
Publication number | Publication date |
---|---|
EP0292897B1 (fr) | 1994-04-20 |
EP0292897A3 (en) | 1990-05-09 |
ATE104788T1 (de) | 1994-05-15 |
DE3889144D1 (de) | 1994-05-26 |
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