EP2425414B1 - Method and device for traffic control at a railroad level crossing - Google Patents

Method and device for traffic control at a railroad level crossing Download PDF

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Publication number
EP2425414B1
EP2425414B1 EP10714249A EP10714249A EP2425414B1 EP 2425414 B1 EP2425414 B1 EP 2425414B1 EP 10714249 A EP10714249 A EP 10714249A EP 10714249 A EP10714249 A EP 10714249A EP 2425414 B1 EP2425414 B1 EP 2425414B1
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Prior art keywords
traffic
tailback
danger zone
exit
vehicles
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EP10714249A
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German (de)
French (fr)
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EP2425414A1 (en
Inventor
Matthias Seifert
Thomas Wenzel
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Siemens AG
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Siemens AG
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Priority to PL10714249T priority Critical patent/PL2425414T3/en
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    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/01Detecting movement of traffic to be counted or controlled
    • G08G1/04Detecting movement of traffic to be counted or controlled using optical or ultrasonic detectors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61LGUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L29/00Safety means for rail/road crossing traffic
    • B61L29/24Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/07Controlling traffic signals
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/16Anti-collision systems
    • G08G1/164Centralised systems, e.g. external to vehicles

Definitions

  • the invention relates to a method for traffic control at a railway crossing according to the preamble of patent claim 1 and an apparatus for performing the method according to claim 7.
  • a road intersect with one or more lanes for road vehicles, hereinafter referred to as vehicles, and a single or multi-track railway line for rail vehicles, which share a common danger area.
  • the danger area comprises a conflict area on which the movement strips of the incompatible traffic streams are superimposed.
  • visible areas are kept free from both sides of the road on both sides of the railroad track, and danger signs, beacons and other road traffic signs are set up.
  • the priority of the railway is indicated to the road users by the setting up of St. Andrews crosses.
  • level crossings are often secured by technical fuses, such as lights with yellow and red signal generator, red flashing lights, barriers or half barriers.
  • Light signals at the level crossing must be included in a traffic light program for traffic control at the intersection.
  • the relevant time constant of the level crossing is composed of a first part-time corresponding to the time needed to influence the traffic to allow the level crossing to be secured and a second part-time equal to the time required to secure the level crossing no adjacent intersection would affect the traffic flow.
  • the first part-time begins at the moment when the traffic light system is affected; it ends as soon as the securing of the railroad crossing can begin.
  • a warning signal device for warning motor vehicle drivers before approaching railway vehicles at level crossings railroad without technical assurance known.
  • a constantly active low-power radio station is installed.
  • a transmitter of another low power, variable range radio signal is also installed, activated by the signals of approaching traction vehicles.
  • a receiver of signals from the transmitters at the level crossings are in the motor vehicles, where the received signal generates a warning tone and / or possibly an additional light signal for the motor vehicle driver as a sign that a railway vehicle is approaching the railroad crossing.
  • the patent DE 10 2007 032 091 B3 discloses an apparatus for monitoring a level crossing with a railway line, a road and barriers located on either side of the railway line.
  • the road is divided from the railway track into a first and a second road section, between which there is a danger area.
  • the device comprises in each case two cameras, which are arranged in front of and behind the danger zone and are designed to receive the first and second road sections in first and second viewing directions, respectively, and an electrical control, which is designed to successively take pictures of an object. which approaches the railroad crossing, crosses it and moves away from it again, wherein the recorded images are compared for the recognition of the object.
  • patent documents WO 2004/053813 A1 and WO 00/46775 A1 also disclose a device or system for monitoring a level crossing.
  • the invention has for its object to provide a method and an apparatus of the type mentioned, with the traffic safety at the railroad crossing can be improved.
  • the sub-task related to the method is achieved according to the invention by a method having the features of claim 1.
  • a traffic flow of vehicles in the exit is detected.
  • Typical traffic variables describing the traffic flow are the traffic volume, that is to say the number of vehicles passing a measuring cross section per unit of time, as well as the speed of the vehicles at the measuring cross section, averaged over a predetermined period of time. From the measured traffic variables, it can be determined whether there is free, stagnant or stationary traffic at the measuring cross section. In particular, it is thus possible to determine whether a backflow end of a backlog of vehicles building up in the exit has reached the measuring cross section formed, for example, by a series of induction loops laid in the road surface.
  • the position of a tailback within a detection range can be localized even more accurately. If the tailback end approaches the danger zone of the level crossing in a critical manner, which may be indicated by falling below a predefinable distance threshold between the tailback end and the danger zone, the access road in front of the danger zone is blocked. This blocking can be done by emitting a light signal or other traffic-inhibiting devices. This is to prevent further entry into the danger zone, which could lead to a dangerous growth of the backwater in the danger zone of the railroad crossing and thus to a dangerous situation when approaching a rail vehicle. This provides a simple and inexpensive solution to the security problem.
  • the solution can be independent of technical safety devices of railway operations, the different security classes have to be sufficient as road traffic signal systems designed.
  • the decoupling of road and rail traffic control systems also eliminates the need for coordination.
  • the signaling can be triggered preventively independent of an actual approach of a rail vehicle.
  • an intrusion of the tailback is reported in the danger zone of a traffic signal system, which regulates the traffic at a road junction following the railroad crossing, wherein on the exit before the follower node waiting or incoming vehicles, a release phase is signaled.
  • the message can be wirelessly wireless or wired between the controllers involved.
  • a critical approach of the tailback is reported to the danger area or intrusion of the tailback end in the danger zone of a traffic signal system, which regulates traffic at a road junction preceding the railroad crossing, the traffic at the Vorknoten depending on the location of Backwater is regulated.
  • the traffic flowing in from the preliminary node via the approach to the railroad crossing can be throttled in such a way that the entire amount of traffic flowing out of the preliminary node does not cause a backlog in the exit.
  • penetration of the tailback end into the danger zone is reported to a control center assigned to rail traffic on the railway line. If a vehicle or other object, despite the aforementioned measures, are in the danger zone, can by understanding the railway control center influence on rail transport. Thus, by remote message from the control center, a rail vehicle approaching the railroad crossing can be prevented from continuing or forced to emergency braking to prevent an accident.
  • video images are taken from the exit and evaluated digitally to detect the position of the tailback.
  • image evaluation algorithms in a video camera on the one hand, an object recognition can take place, depending on the result of which additional security measures can be taken, but also recordings for documentation purposes are stored.
  • the video footage can be used to analyze local events and, if necessary, to prosecute deliberate traffic violations.
  • a length of a vehicle approaching the backflow end is determined by digital evaluation of the recorded video images. Depending on the result of the investigation, a passenger car of short length may still be allowed to pass through the danger area while the access for a truck with a trailer is blocked in order to prevent a blockade of the danger area.
  • the related to the device sub-task is achieved by a device performing a method according to one of claims 1 to 6, with a traffic detector, which is adapted to detect the position of the end of forming on the exit backwater of vehicles and falls below a to announce predefinable distance threshold between tailback and danger zone, and with a traffic signal, which is adapted to receive a message from the traffic detector and to control the vehicle traffic in the railroad crossing area via signalers.
  • a road S which connects two adjacent road junctions VK and FK, and a single-track railway line B intersect.
  • a danger area G in which the lanes of the enemy road and overlap rail traffic flows.
  • vehicle backlog can occur in each of the two directions of the road S, but will be described below for vehicles F, which are located on the road S from Vorkknek VK on the access Z to the level crossing BÜ and from there on the Take exit A to the next node FK.
  • a traffic detector 10 preferably a video camera with image evaluation unit
  • the traffic flow - traffic, average speed, occupancy, and the like - and the length of vehicles F on the exit A is detected and closed on the location of an end E of the back-staking vehicle queue .
  • the field of view of the video camera 10 detects the danger area G and an adjoining section of the exit A in order to detect the jam end E or other lying in the danger area G, stationary objects and recognize.
  • the video camera 10 transmits a corresponding message to a control device 11 at the level crossing BÜ.
  • the control unit 11 switches via a signal generator 12 at the level crossing BÜ a blocking light signal for the level crossing BÜ on the approach Z approaching vehicles F. This prevents further vehicles F drive into the danger zone G, which might not leave them immediately. This considerably reduces the collision risk of a rail vehicle with a vehicle F or other object located in the danger zone G.
  • the blocking of the access Z in front of the danger zone G can additionally be supported by lowering a barrier 13.
  • the decision to block access to the danger zone G can be improved.
  • shorter vehicles F can still pass freely, while longer vehicles F, which would extend the backwater into the danger zone G, would be denied entry.
  • the control unit 11 reports a critical backwater on the exit A to a control unit 21 of a traffic signal 20, which regulates the traffic at the sequence node FK.
  • a green phase is requested for the exit F at the following node FK waiting or approaching this vehicle F and initiated with high priority.
  • the accumulated backwater can degrade in order to make it possible for a vehicle F, which has come to a standstill in the danger zone G, to leave the danger zone G quickly.
  • the control unit 11 reports a critical backwater on the exit A and a control unit 31 of a traffic signal system 30, which regulates the traffic at the Vorknoten VK.
  • the signaling via the signal generator 32 can then be dimensioned so that the pre-notes VK leave only sufficiently small vehicle pulse on the access Z, which then cause no critically large
  • control unit 11 reports a stationary object detected in the danger zone G to a control center 40, which can influence a rail vehicle traveling on the railway line B.
  • the rail vehicle can be denied the exit from a station used or it can be caused by signal or remote message to a slow speed or even emergency braking.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Traffic Control Systems (AREA)

Description

Die Erfindung betrifft ein Verfahren zur Verkehrs steuerung an einem Bahnübergang nach dem Oberbegriff des Patentanspruchs 1 sowie eine Vorrichtung zur Durchführung des Verfahrens nach Patentanspruch 7.The invention relates to a method for traffic control at a railway crossing according to the preamble of patent claim 1 and an apparatus for performing the method according to claim 7.

An höhengleichen Bahnübergängen kreuzen sich eine Straße mit einer oder mehreren Fahrbahnen für Straßenfahrzeuge, im Folgenden kurz Fahrzeuge genannt, und eine ein- oder mehrgleisige Bahntrasse für Schienenfahrzeuge, welche einen gemeinsamen Gefahrenbereich teilen. Der Gefahrenbereich umfasst eine Konfliktfläche, auf der sich die Bewegungsstreifen der nicht verträglichen Verkehrsströme überlagern. Zur Sicherung der Bahnübergänge werden Sichtflächen von beiden Seiten der Straße zu beiden Seiten des Schienenwegs freigehalten und Gefahrzeichen, Baken und andere Verkehrszeichen an der Straße aufgestellt. Insbesondere wird den Verkehrsteilnehmern der Vorrang der Bahn durch das Aufstellen von Andreaskreuzen angezeigt. Darüber hinaus sind Bahnübergängen häufig durch technische Sicherungen, wie zum Beispiel Lichtzeichen mit gelbem und rotem Signalgeber, rote Blinklichter, Schranken oder Halbschranken, gesichert.At height level crossings, a road intersect with one or more lanes for road vehicles, hereinafter referred to as vehicles, and a single or multi-track railway line for rail vehicles, which share a common danger area. The danger area comprises a conflict area on which the movement strips of the incompatible traffic streams are superimposed. To protect the level crossings, visible areas are kept free from both sides of the road on both sides of the railroad track, and danger signs, beacons and other road traffic signs are set up. In particular, the priority of the railway is indicated to the road users by the setting up of St. Andrews crosses. In addition, level crossings are often secured by technical fuses, such as lights with yellow and red signal generator, red flashing lights, barriers or half barriers.

Liegen Straßenkreuzungen so nahe an Bahnübergänge, dass das Sichern des Bahnübergangs oder die Verkehrsabwicklung an der Kreuzung bei gesperrtem Bahnübergang beeinträchtigt wird, so sind nach den " Richtlinien über Abhängigkeiten zwischen der technischen Sicherung von Bahnübergängen und der Verkehrsregelung an benachbarten Straßenkreuzungen und -einmündungen (BÜSTRA)", BMV-Erlass StV 4/36.42.37 - 01 - vom 17.07.1972 unter Berücksichtigung Änderungen vom 19.01.1977 und 13.01.1984, die Regelungen des Straßenverkehrs und die der Bahnübergangssicherung aufeinander abzustimmen. Demnach sollen Maßnahmen am Bahnübergang und an der Straßenkreuzung oder -einmündung den Straßenverkehr zum Bahnübergang frühzeitig unterbrechen, so dass die jeweilige Bahnübergangssicherung ohne Behinderung des Schienenverkehrs wirksam werden kann.If intersections are so close to level crossings that the securing of the level crossing or the traffic handling at the intersection is impaired when the level crossing is closed, then according to the Guidelines on dependencies between the technical protection of level crossings and the traffic control at adjacent intersections and junctions (BÜSTRA) ", BMV Decree StV 4 / 36.42.37 - 01 - from 17.07.1972 Taking into account changes from 19.01.1977 and 13.01.1984, the regulations of the road traffic and the level crossing protection to one another vote. Accordingly, measures at the railroad crossing and at the intersection or - Junction interrupt the road to the railroad crossing early, so that the respective level crossing protection can be effective without obstructing the rail traffic.

Lichtzeichen am Bahnübergang sind in ein Lichtzeichenprogramm zur Verkehrsregelung an der Kreuzung einzubeziehen. Bei abhängigen Anlagen setzt sich die relevante Zeitkonstante des Bahnübergangs aus einer ersten Teilzeit, die dem Zeitbedarf für die Beeinflussung des Straßenverkehrs entspricht, um das Sichern des Bahnübergangs zu ermöglichen, und einer zweiten Teilzeit zusammen, die dem Zeitbedarf für das Sichern des Bahnübergangs entspricht, wenn keine benachbarte Kreuzung den Verkehrsablauf beeinflussen würde. Bei der Ermittlung des Zeitbedarfs für die Beeinflussung des Straßenverkehrs ist zu beachten, dass die erste Teilzeit im Augenblick der Beeinflussung der Lichtzeichenanlage beginnt; sie endet, sobald mit der Sicherung des Bahnübergangs begonnen werden kann.Light signals at the level crossing must be included in a traffic light program for traffic control at the intersection. In dependent installations, the relevant time constant of the level crossing is composed of a first part-time corresponding to the time needed to influence the traffic to allow the level crossing to be secured and a second part-time equal to the time required to secure the level crossing no adjacent intersection would affect the traffic flow. When determining the time required to influence road traffic, it should be noted that the first part-time begins at the moment when the traffic light system is affected; it ends as soon as the securing of the railroad crossing can begin.

Die erforderlichen Mindestgrünzeiten und Zwischenzeiten sowie gewisse Verzögerungen für das Räumen des Bahnübergangs bei Behinderungen durch Abbieger an der Kreuzung sind zu berücksichtigen. Hierbei ist von einer Beeinflussung in demjenigen Signalisierungszustand auszugehen, der den größten Zeitbedarf bis zum Beginn der Vollbeeinflussung erfordert. Bei Berechnung des größten Zeitbedarfs kann es sich empfehlen, in besonderen Fällen - etwa bei einer Grünen Welle - auch die Verhältnisse des Straßenverkehrs verstärkt zu berücksichtigen, sofern dem nicht überwiegende Interessen des Eisenbahnverkehrs entgegen stehen. Vor einer Zugfahrt werden alle Lichtzeichengeber so geschaltet, dass das zügige Räumen des Bahnübergangs sichergestellt ist und die Zufahrten zum Bahnübergang gesperrt werden. Hierfür sendet eine BÜSTRA-Schnittstelle ein Anmeldesignal an die Lichtzeichenanlage der Kreuzung, wenn sich ein Schienenfahrzeug dem Bahnübergang nähert.The required minimum green times and split times as well as certain delays for clearing the level crossing in the event of obstruction by benders at the intersection shall be taken into account. In this case, it is to be assumed that an influencing in that signaling state which requires the greatest time until the full influence is started. When calculating the greatest amount of time, it may be advisable to take greater account of the circumstances of road traffic in special cases, such as a Green Wave, provided that this does not conflict with the predominant interests of rail transport. Before a train journey, all signal transmitters are switched so that the speedy clearing of the level crossing is ensured and the access roads to the level crossing are blocked. For this purpose, an BÜSTRA interface sends a registration signal to the traffic light system of the intersection when a rail vehicle approaches the level crossing.

Diese Voranmeldung ist sehr kurz und erzeugt große Probleme bei der Definition der oben genannten Zeitkonstanten. Die damit einhergehenden hohen Projektierungskosten werden von Kunden nur selten in Kauf genommen. Obwohl gemäß BÜSTRA ein Rückstau auf den Bahnübergang und die Straßenkreuzung vermieden werden soll, treten diese noch immer auf und verursachen Unfälle, die viele Menschenleben und den Bahnen hohe Betriebsverluste kosten.This pre-application is very short and creates big problems in the definition of the above time constants. The associated high design costs are paid by customers rarely accepted. Although according to BÜSTRA a backwater to the railroad crossing and the intersection should be avoided, these still occur and cause accidents that cost many lives and the railways high operating losses.

Zur Verminderung des Unfallrisikos ist aus der Gebrauchsmusterschrift DE 20 2008 003 947 U1 eine Warnsignaleinrichtung zur Warnung von Kfz-Führern vor Annäherung von Eisenbahnfahrzeugen an höhengleiche Bahnübergänge ohne technische Sicherung bekannt. An Triebfahrzeugen der Eisenbahn ist ein ständig aktiver Radiosender geringer Leistung installiert. An den Bahnübergängen ist ein Sender eines anderen Radiosignals ebenfalls geringer Leistung und variabler Reichweite installiert, der durch die Signale sich nähernder Triebfahrzeuge aktiviert wird. Ein Empfänger von Signalen der Sender an den Bahnübergängen befinden sich in den Kraftfahrzeugen, wo das empfangene Signal einen Warnton und/oder evtl. ein zusätzliches Lichtsignal für den Kraftfahrzeugführer als Zeichen dafür erzeugt, dass sich ein Eisenbahnfahrzeug dem Bahnübergang nähert.To reduce the accident risk is from the utility model DE 20 2008 003 947 U1 a warning signal device for warning motor vehicle drivers before approaching railway vehicles at level crossings railroad without technical assurance known. At railroad locomotives a constantly active low-power radio station is installed. At the level crossings, a transmitter of another low power, variable range radio signal is also installed, activated by the signals of approaching traction vehicles. A receiver of signals from the transmitters at the level crossings are in the motor vehicles, where the received signal generates a warning tone and / or possibly an additional light signal for the motor vehicle driver as a sign that a railway vehicle is approaching the railroad crossing.

Die Patentschrift DE 10 2007 032 091 B3 offenbart eine Vorrichtung zum Überwachen eines höhengleichen Bahnübergangs mit einer Bahntrasse, einer Straße und beiderseits der Bahntrasse angeordneten Schranken. Die Straße ist von der Bahntrasse in einen ersten und einen zweiten Straßenabschnitt geteilt, zwischen denen sich ein Gefahrenbereich befindet. Die Vorrichtung umfasst je zwei Kameras, die vor und hinter dem Gefahrenbereich angeordnet sind und zum Aufnehmen des ersten und des zweiten Straßenabschnittes jeweils in einer ersten und zweiten Blickrichtung ausgebildet sind, und eine elektrische Steuerung, die zur sukzessiven Aufnahme von Bildern eines Objektes ausgebildet ist, welches sich dem Bahnübergang nähert, diesen durchquert und sich von diesem wieder entfernt, wobei die aufgenommenen Bilder zur Wiedererkennung des Objektes verglichen werden.The patent DE 10 2007 032 091 B3 discloses an apparatus for monitoring a level crossing with a railway line, a road and barriers located on either side of the railway line. The road is divided from the railway track into a first and a second road section, between which there is a danger area. The device comprises in each case two cameras, which are arranged in front of and behind the danger zone and are designed to receive the first and second road sections in first and second viewing directions, respectively, and an electrical control, which is designed to successively take pictures of an object. which approaches the railroad crossing, crosses it and moves away from it again, wherein the recorded images are compared for the recognition of the object.

Die Patentschrifte WO 2004/053813 A1 und WO 00/46775 A1 offenbaren ebenfalls eine Vorrichtung bzw. ein System zur Überwachung eines Bahnübergangs.The patent documents WO 2004/053813 A1 and WO 00/46775 A1 also disclose a device or system for monitoring a level crossing.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung der eingangs genannten Art bereitzustellen, mit der die Verkehrssicherheit am Bahnübergang verbessert werden kann.The invention has for its object to provide a method and an apparatus of the type mentioned, with the traffic safety at the railroad crossing can be improved.

Die auf das Verfahren bezogene Teilaufgabe wird erfindungsgemäß gelöst durch ein Verfahren mit den Merkmalen des Patentanspruches 1. Es wird ein Verkehrsfluss von Fahrzeugen in der Ausfahrt erfasst. Typische den Verkehrsfluss beschreibende Verkehrsgrößen sind die Verkehrsstärke, also die Anzahl der pro Zeiteinheit einen Messquerschnitt passierenden Fahrzeuge, sowie die Geschwindigkeit der Fahrzeuge an dem Messquerschnitt, gemittelt über eine vorgegebene Zeitspanne. Aus den gemessenen Verkehrsgrößen kann ermittelt werden, ob am Messquerschnitt freier, stockender oder stehender Verkehr vorliegt. Insbesondere lässt sich also ermitteln, ob ein Rückstauende eines sich in der Ausfahrt aufbauenden Rückstaues von Fahrzeugen den Messquerschnitt, der beispielsweise durch eine Reihe von im Straßenbelag verlegten Induktionsschleifen gebildet ist, erreicht hat. Im Falle anderer Verkehrsdetektoren, die etwa auf Magnetfeld-, Radar-, Infrarot-, Ultraschall- oder Videoaufnahmetechniken basieren, lässt sich die Lage eines Rückstauendes innerhalb eines Erfassungsbereiches noch genauer lokalisieren. Nähert sich das Rückstauende in kritischer Weise dem Gefahrenbereich des Bahnübergangs, was durch Unterschreiten einer vordefinierbaren Abstandsschwelle zwischen Rückstauende und Gefahrenbereich indiziert sein kann, so wird die Zufahrt vor dem Gefahrenbereich gesperrt. Diese Sperrung kann durch Abgabe eines Lichtsignals oder anderer verkehrshemmender Einrichtungen erfolgen. Damit soll ein weiteres Einfahren in den Gefahrenbereich verhindert werden, was zu einem gefährlichen Anwachsen des Rückstaues in den Gefahrenbereich des Bahnübergangs hinein und damit zu einer Gefahrensituation bei Herannahen eines Schienenfahrzeuges führen könnte. Auf diese Weise wird eine einfache und preisgünstige Lösung des Sicherheitsproblems bereitgestellt. Außerdem kann die Lösung unabhängig von technischen Sicherungseinrichtungen des Bahnbetriebs, die unterschiedlichen Sicherheitsklassen genügen müssen als Straßenverkehrssignalanlagen, gestaltet werden. Durch die Entkopplung von Steuereinrichtungen des Straßen- und Schienenverkehrs entfällt auch ein entsprechender Abstimmungsbedarf. Die Signalisierung kann unabhängig von einer tatsächlichen Annäherung eines Schienenfahrzeugs präventiv ausgelöst werden.The sub-task related to the method is achieved according to the invention by a method having the features of claim 1. A traffic flow of vehicles in the exit is detected. Typical traffic variables describing the traffic flow are the traffic volume, that is to say the number of vehicles passing a measuring cross section per unit of time, as well as the speed of the vehicles at the measuring cross section, averaged over a predetermined period of time. From the measured traffic variables, it can be determined whether there is free, stagnant or stationary traffic at the measuring cross section. In particular, it is thus possible to determine whether a backflow end of a backlog of vehicles building up in the exit has reached the measuring cross section formed, for example, by a series of induction loops laid in the road surface. In the case of other traffic detectors, based for example on magnetic field, radar, infrared, ultrasound or video recording techniques, the position of a tailback within a detection range can be localized even more accurately. If the tailback end approaches the danger zone of the level crossing in a critical manner, which may be indicated by falling below a predefinable distance threshold between the tailback end and the danger zone, the access road in front of the danger zone is blocked. This blocking can be done by emitting a light signal or other traffic-inhibiting devices. This is to prevent further entry into the danger zone, which could lead to a dangerous growth of the backwater in the danger zone of the railroad crossing and thus to a dangerous situation when approaching a rail vehicle. This provides a simple and inexpensive solution to the security problem. In addition, the solution can be independent of technical safety devices of railway operations, the different security classes have to be sufficient as road traffic signal systems designed. The decoupling of road and rail traffic control systems also eliminates the need for coordination. The signaling can be triggered preventively independent of an actual approach of a rail vehicle.

In einer bevorzugten Ausgestaltung des erfindungsgemäßen Verfahrens wird ein Eindringen des Rückstauendes in den Gefahrenbereich einer Lichtsignalanlage gemeldet, welche den Verkehr an einem dem Bahnübergang folgenden Straßenknoten regelt, wobei auf der Ausfahrt vor dem Folgeknoten wartenden bzw. zufließenden Fahrzeugen eine Freigabephase signalisiert wird. Die Meldung kann drahtlos per Funk oder leitungsgebunden zwischen den beteiligten Steuergeräten erfolgen. Durch Einleiten einer Grünphase am Folgeknoten kann der Rückstau über den Folgeknoten abgebaut und das im Gefahrenbereich befindliche Fahrzeug den Bahnübergang verlassen.In a preferred embodiment of the method according to the invention, an intrusion of the tailback is reported in the danger zone of a traffic signal system, which regulates the traffic at a road junction following the railroad crossing, wherein on the exit before the follower node waiting or incoming vehicles, a release phase is signaled. The message can be wirelessly wireless or wired between the controllers involved. By initiating a green phase at the secondary node, the backwater can be reduced via the secondary node and the vehicle located in the danger zone can leave the railroad crossing.

In einer vorteilhaften Ausführungsform des erfindungsgemäßen Verfahrens wird eine kritische Annäherung des Rückstauendes an den Gefahrenbereich oder ein Eindringen des Rückstauendes in den Gefahrenbereich einer Lichtsignalanlage gemeldet, welche den Verkehr an einem dem Bahnübergang vorangehenden Straßenknoten regelt, wobei der Verkehr am Vorknoten in Abhängigkeit von der Lage des Rückstauendes geregelt wird. Hierdurch kann der vom Vorknoten über die Zufahrt auf den Bahnübergang zufließende Verkehr derart gedrosselt werden, dass die gesamte vom Vorknoten abfließende Verkehrsmenge keine Rückstaugefahr in der Ausfahrt bewirkt.In an advantageous embodiment of the method according to the invention, a critical approach of the tailback is reported to the danger area or intrusion of the tailback end in the danger zone of a traffic signal system, which regulates traffic at a road junction preceding the railroad crossing, the traffic at the Vorknoten depending on the location of Backwater is regulated. As a result, the traffic flowing in from the preliminary node via the approach to the railroad crossing can be throttled in such a way that the entire amount of traffic flowing out of the preliminary node does not cause a backlog in the exit.

In einer bevorzugten Ausführungsform des erfindungsgemäßen Verfahrens wird ein Eindringen des Rückstauendes in den Gefahrenbereich einer dem Schienenverkehr auf der Bahntrasse zugeordneten Leitzentrale gemeldet. Bleibt ein Fahrzeug oder ein anderes Objekt, trotz der vorgenannten Maßnahmen, im Gefahrenbereich liegen, kann durch Verständigung der Bahnleitzentrale Einfluss auf den Schienenverkehr genommen werden. So kann durch Fernmeldung von der Leitzentrale aus ein sich dem Bahnübergang näherndes Schienenfahrzeug von seiner Weiterfahrt abgehalten oder zu einer Notbremsung gezwungen werden, um einen Unfall zu verhindern.In a preferred embodiment of the method according to the invention, penetration of the tailback end into the danger zone is reported to a control center assigned to rail traffic on the railway line. If a vehicle or other object, despite the aforementioned measures, are in the danger zone, can by understanding the Railway control center influence on rail transport. Thus, by remote message from the control center, a rail vehicle approaching the railroad crossing can be prevented from continuing or forced to emergency braking to prevent an accident.

In einer vorteilhaften Ausgestaltung des erfindungsgemäßen Verfahrens werden von der Ausfahrt Videobilder aufgenommen und zur Erfassung der Lage des Rückstauendes digital ausgewertet werden. Durch Bildauswertealgorithmen in einer Videokamera kann einerseits eine Objekterkennung erfolgen, von deren Ergebnis abhängig weitere Sicherungsmaßnahmen getroffen werden können, aber auch Aufnahmen zu Dokumentationszwecken gespeichert werden. Die Videoaufnahmen können zur Analyse der Begebenheiten am Ort und ggf. zur Strafverfolgung bei bewussten Verkehrsverstößen verwendet werden. Mit Vorteil wird bei dem erfindungsgemäßen Verfahren durch digitale Auswertung der aufgenommenen Videobilder eine Länge eines sich dem Rückstauende nähernden Fahrzeugs ermittelt. In Abhängigkeit des Ermittlungsergebnisses kann einem Personenkraftwagen mit geringer Länge die Durchfahrt durch den Gefahrenbereich noch freigegeben werden, während die Zufahrt für einen Lastkraftwagen mit Anhänger gesperrt wird, um eine Blockade des Gefahrenbereichs zu verhindern.In an advantageous embodiment of the method according to the invention video images are taken from the exit and evaluated digitally to detect the position of the tailback. By image evaluation algorithms in a video camera, on the one hand, an object recognition can take place, depending on the result of which additional security measures can be taken, but also recordings for documentation purposes are stored. The video footage can be used to analyze local events and, if necessary, to prosecute deliberate traffic violations. Advantageously, in the method according to the invention, a length of a vehicle approaching the backflow end is determined by digital evaluation of the recorded video images. Depending on the result of the investigation, a passenger car of short length may still be allowed to pass through the danger area while the access for a truck with a trailer is blocked in order to prevent a blockade of the danger area.

Die auf die Vorrichtung bezogene Teilaufgabe wird gelöst durch eine Vorrichtung Durchführung eines Verfahrens nach einem der Ansprüche 1 bis 6, mit einem Verkehrsdetektor, der dazu ausgebildet ist, die Lage des Endes eines sich auf der Ausfahrt bildenden Rückstaues von Fahrzeugen zu erfassen und ein Unterschreiten einer vordefinierbaren Abstandsschwelle zwischen Rückstauende und Gefahrenbereich zu melden, und mit einer Lichtsignalanlage, die dazu ausgebildet ist, eine Meldung des Verkehrsdetektors zu empfangen und über Signalgeber den Fahrzeugverkehr im Bereich des Bahnübergangs zu steuern.The related to the device sub-task is achieved by a device performing a method according to one of claims 1 to 6, with a traffic detector, which is adapted to detect the position of the end of forming on the exit backwater of vehicles and falls below a to announce predefinable distance threshold between tailback and danger zone, and with a traffic signal, which is adapted to receive a message from the traffic detector and to control the vehicle traffic in the railroad crossing area via signalers.

Weitere Vorteile der Erfindung ergeben sich aus der im Folgenden beschriebenen Zeichnung, in deren einziger Figur eine erfindungsgemäße Vorrichtung zur Verkehrsteuerung an einem Bahnübergang schematisch veranschaulicht ist.Further advantages of the invention will become apparent from the drawing described below, in the single figure of a device according to the invention for traffic control at a railway crossing is illustrated schematically.

Gemäß der einzigen Figur kreuzen sich an einem Bahnübergang BÜ eine Straße S, die zwei benachbarte Straßenknoten VK bzw. FK verbindet, und eine eingleisige Bahntrasse B. Im Bereich des Bahnüberganges BÜ befindet sich ein Gefahrenbereich G, in dem sich die Fahrstreifen der feindlichen Straßen- und Schienenverkehrsströme überlagern. Das Problem eines in den Gefahrenbereich G gelangenden Fahrzeugrückstaues kann in jeder der beiden Fahrtrichtungen der Straße S auftreten, wird aber im Folgenden für Fahrzeuge F beschrieben, die sich auf der Straße S vom Vorknoten VK auf der Zufahrt Z zum Bahnübergang BÜ und von dort auf der Ausfahrt A zum Folgeknoten FK bewegen.According to the single figure, at a level crossing BÜ, a road S, which connects two adjacent road junctions VK and FK, and a single-track railway line B intersect. In the area of the level crossing BÜ there is a danger area G, in which the lanes of the enemy road and overlap rail traffic flows. The problem of reaching into the danger zone G vehicle backlog can occur in each of the two directions of the road S, but will be described below for vehicles F, which are located on the road S from Vorkknek VK on the access Z to the level crossing BÜ and from there on the Take exit A to the next node FK.

Durch erhöhtes Verkehrsaufkommen auf der Ausfahrt A bzw. durch zu geringen Verkehrsabfluss über den Folgeknoten FK, aber auch durch einen Unfall oder ein liegen gebliebenes Fahrzeug F auf der Ausfahrt A kann sich ein Rückstau von Fahrzeugen F bilden. Erfindungsgemäß wird mittels eines Verkehrsdetektors 10, vorzugsweise einer Videokamera mit Bildauswertungseinheit, der Verkehrsfluss - Verkehrsstärke, mittlere Geschwindigkeit, Belegung, und dergleichen - und die Länge von Fahrzeugen F auf der Ausfahrt A erfasst und daraus auf die Lage eines Endes E der sich rückstauenden Fahrzeugschlange geschlossen. Das Sichtfeld der Videokamera 10 erfasst dabei den Gefahrenbereich G und einen sich daran anschließenden Abschnitt der Ausfahrt A, um das Stauende E oder andere im Gefahrenbereich G liegende, stationäre Objekte zu erfassen und zu erkennen.Due to increased traffic on the exit A or due to low traffic flow through the sequence node FK, but also by an accident or a broken-down vehicle F on the exit A may be a backwater of vehicles F form. According to the invention by means of a traffic detector 10, preferably a video camera with image evaluation unit, the traffic flow - traffic, average speed, occupancy, and the like - and the length of vehicles F on the exit A is detected and closed on the location of an end E of the back-staking vehicle queue , The field of view of the video camera 10 detects the danger area G and an adjoining section of the exit A in order to detect the jam end E or other lying in the danger area G, stationary objects and recognize.

Unterschreitet der Abstand zwischen Rückstauende E und Gefahrenbereich G eine kritische Schwelle oder dringt das Stauende E sogar in den Gefahrenbereich G ein, so wird von der Videokamera 10 eine entsprechende Meldung an ein Steuergerät 11 am Bahnübergang BÜ übertragen. Das gleiche gilt, wenn ein statir onäres Objekt - etwa ein liegen gebliebenes Fahrzeug F - im Gefahrenbereich G erkannt wird. Das Steuergerät 11 schaltet über einen Signalgeber 12 am Bahnübergang BÜ ein Sperrlichtsignal für sich dem Bahnübergang BÜ auf der Zufahrt Z nähernde Fahrzeuge F. Hierdurch wird verhindert, dass weitere Fahrzeuge F in den Gefahrenbereich G einfahren, die diesen möglicherweise nicht sofort verlassen könnten. Hierdurch wird das Kollisionsrisiko eines Schienenfahrzeuges mit einem im Gefahrenbereich G befindlichen Fahrzeug F bzw. sonstigen Objekt erheblich verringert. Die Sperrung der Zufahrt Z vor dem Gefahrenbereich G kann zusätzlich durch Absenken einer Schranke 13 unterstützt werden.If the distance between the tailback end E and the danger zone G falls below a critical threshold or even penetrates the tail end E into the danger zone G, the video camera 10 transmits a corresponding message to a control device 11 at the level crossing BÜ. The same is true if a statir onäres object - about a broken-down vehicle F - in the danger zone G is detected. The control unit 11 switches via a signal generator 12 at the level crossing BÜ a blocking light signal for the level crossing BÜ on the approach Z approaching vehicles F. This prevents further vehicles F drive into the danger zone G, which might not leave them immediately. This considerably reduces the collision risk of a rail vehicle with a vehicle F or other object located in the danger zone G. The blocking of the access Z in front of the danger zone G can additionally be supported by lowering a barrier 13.

Durch Erfassen der Fahrzeuglänge eines sich dem Rückstauende E nähernden Fahrzeugs F kann die Entscheidung über eine Sperrung der Zufahrt zum Gefahrenbereich G verbessert werden. So können kürzere Fahrzeuge F noch frei passieren, während längeren Fahrzeugen F, die den Rückstau in den Gefahrenbereich G hinein verlängern würden, die Einfahrt verwehrt würde.By detecting the vehicle length of a vehicle F approaching the tailback E, the decision to block access to the danger zone G can be improved. Thus, shorter vehicles F can still pass freely, while longer vehicles F, which would extend the backwater into the danger zone G, would be denied entry.

Das Steuergerät 11 meldet einen kritischen Rückstau auf der Ausfahrt A an ein Steuergerät 21 einer Lichtsignalanlage 20, die den Straßenverkehr am Folgeknoten FK regelt. Im Signalprogrammablauf des Steuergerätes 21 wird eine Grünphase für in der Ausfahrt A am Folgeknoten FK wartende oder sich diesem nähernden Fahrzeuge F angefordert und mit hoher Priorität eingeleitet. Hierdurch kann sich der entstandene Rückstau abbauen, um es einem im Gefahrenbereich G zum Stehen gekommenen Fahrzeug F zu ermöglichen, den Gefahrenbereich G zügig zu verlassen.The control unit 11 reports a critical backwater on the exit A to a control unit 21 of a traffic signal 20, which regulates the traffic at the sequence node FK. In the signal program sequence of the control unit 21, a green phase is requested for the exit F at the following node FK waiting or approaching this vehicle F and initiated with high priority. As a result, the accumulated backwater can degrade in order to make it possible for a vehicle F, which has come to a standstill in the danger zone G, to leave the danger zone G quickly.

Das Steuergerät 11 meldet einen kritischen Rückstau auf der Ausfahrt A auch einem Steuergerät 31 einer Lichtsignalanlage 30, die den Straßenverkehr am Vorknoten VK regelt. Die Signalisierung über die Signalgeber 32 kann dann so bemessen werden, dass den Vorknoten VK nur hinreichend kleine Fahrzeugpulks über die Zufahrt Z verlassen, die dann in der Ausfahrt A keine kritisch großen Rückstaulängen verursachen. Diese Maßnahme kann auch unabhängig von einer bereits erfassten kritischen Rückstaulänge vorsorglich getroffen werden.The control unit 11 reports a critical backwater on the exit A and a control unit 31 of a traffic signal system 30, which regulates the traffic at the Vorknoten VK. The signaling via the signal generator 32 can then be dimensioned so that the pre-notes VK leave only sufficiently small vehicle pulse on the access Z, which then cause no critically large Rückstaulängen in the exit A. These The measure can also be taken as a precaution, irrespective of an already recorded critical back-up length.

Das Steuergerät 11 meldet insbesondere ein im Gefahrenbereich G erfasstes stationäres Objekt an eine Leitzentrale 40, die auf ein die Bahntrasse B befahrendes Schienenfahrzeug Einfluss nehmen kann. So kann zur Vermeidung einer Kollision im Gefahrenbereich G dem Schienenfahrzeug die Ausfahrt aus einem benutzten Bahnhof verwehrt werden oder es durch Signal oder Fernmeldung zu einer Langsamfahrt oder gar einer Notbremsung veranlasst werden.In particular, the control unit 11 reports a stationary object detected in the danger zone G to a control center 40, which can influence a rail vehicle traveling on the railway line B. Thus, to avoid a collision in the danger zone G, the rail vehicle can be denied the exit from a station used or it can be caused by signal or remote message to a slow speed or even emergency braking.

Insgesamt sind Bahn- und Straßensteuergeräte nicht miteinander verbunden, so dass keine Abstimmungsschwierigkeiten zwischen unterschiedlichen Sicherheitsklassen entstehen können. Das Problem des Rückstaus wird immer sofort dann behoben, wenn es entsteht, so dass eine zeitliche Entkopplung mit dem Zeitpunkt der Zugannäherung entsteht. Die entstandene Situation kann im Falle eines Videodetektors zusätzlich noch dokumentiert werden.Overall, rail and road control devices are not interconnected, so that no voting difficulties between different security classes can arise. The problem of backlog is always corrected immediately when it arises, so that a temporal decoupling arises with the time of train approach. The resulting situation can also be documented in the case of a video detector.

Claims (7)

  1. Method for controlling traffic at a railway level crossing (BÜ) at which a road (S) and a rail line (B) intersect at the same height in a danger zone (G),
    - wherein the road (S) has at least one access (Z) to the danger zone (G), and, subsequent thereto, has an exit (A) from the danger zone (G),
    - wherein the access (Z) for vehicles (F) is blocked or released by way of safety means (11, 12) in front of the danger zone (G),
    characterised in that
    - a traffic flow of vehicles (F) is measured at the exit (A),
    - the measured traffic flow is used to conclude a position of an end (E) of a tailback of vehicles (F) at the exit (A),
    - and when a predefinable distance threshold between end (E) of tailback and danger zone (G) is undershot the access (Z) is blocked.
  2. Method according to claim 1,
    - wherein a penetration of the end (E) of a tailback into the danger zone (G) is reported to a light signal system (20) which regulates the traffic at a street node (FK) following the railway level crossing (BÜ),
    - and wherein a release phase is signalled to vehicles (F) waiting at or flowing towards the exit (A) in front of the following node (FK).
  3. Method according to claim 1 or 2,
    - wherein a critical approach of the end (E) of a tailback to the danger zone (G) or a penetration of the end (E) of a tailback into the danger zone (G) is reported to a light signal system which regulates the traffic at a street node preceding the railway level crossing (BÜ),
    - and wherein the traffic at the previous node (VK) is regulated as a function of the position of the end (E) of a tailback.
  4. Method according to one of claims 1 to 3,
    - wherein a penetration of the end (E) of a tailback into the danger zone (E) is reported to a control unit (40) associated with the rail traffic on the rail line (B).
  5. Method according to one of claims 1 to 4,
    - wherein video images are recorded of the exit (A) and are evaluated digitally in order to measure the position of the end (E) of a tailback.
  6. Method according to claim 5,
    - wherein a length of a vehicle (F) approaching the end (E) of a tailback is determined using digital evaluation of the recorded video images.
  7. Apparatus for carrying out a method according to one of claims 1 to 6,
    - with a traffic detector (10) which is designed to measure the position of the end (E) of a tailback of vehicles (F) forming on the exit (A), and to report if a predefinable distance threshold between end (E) of tailback and danger zone (G) is undershot,
    - and with a light signal system which is designed to receive a message from the traffic detector (10) and to control the vehicle traffic in the zone of the railway level crossing (BÜ) using signal transmitters (12, 22, 32).
EP10714249A 2009-04-30 2010-04-14 Method and device for traffic control at a railroad level crossing Not-in-force EP2425414B1 (en)

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EP2857277A1 (en) 2013-09-24 2015-04-08 AZD Praha S.R.O. Programmable railway level crossing safeguarding equipment with communication coupling to external intelligent peripherals and the method for controlling this equipment's activity
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