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WO2019175747A1 - Procédé de signalisation de l'état d'un élément d'infrastructure de transport et ensemble destiné à la mise en œuvre de ce procédé - Google Patents

Procédé de signalisation de l'état d'un élément d'infrastructure de transport et ensemble destiné à la mise en œuvre de ce procédé Download PDF

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Publication number
WO2019175747A1
WO2019175747A1 PCT/IB2019/051961 IB2019051961W WO2019175747A1 WO 2019175747 A1 WO2019175747 A1 WO 2019175747A1 IB 2019051961 W IB2019051961 W IB 2019051961W WO 2019175747 A1 WO2019175747 A1 WO 2019175747A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
transport infrastructure
transmission module
infrastructure
radio transmission
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.)
Ceased
Application number
PCT/IB2019/051961
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English (en)
Inventor
Jarogniew Rykowski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UNIWERSYTET EKONOMICZNY W POZNANIU
Original Assignee
UNIWERSYTET EKONOMICZNY W POZNANIU
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by UNIWERSYTET EKONOMICZNY W POZNANIU filed Critical UNIWERSYTET EKONOMICZNY W POZNANIU
Priority to EP19720697.2A priority Critical patent/EP3766057A1/fr
Publication of WO2019175747A1 publication Critical patent/WO2019175747A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/005—Traffic control systems for road vehicles including pedestrian guidance indicator
    • 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
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096708—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control
    • G08G1/096716—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control where the received information does not generate an automatic action on the vehicle control
    • 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
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096733—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place
    • G08G1/09675—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place where a selection from the received information takes place in the vehicle
    • 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
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
    • G08G1/096783—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is a roadside individual element
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/16—Anti-collision systems
    • G08G1/164—Centralised systems, e.g. external to vehicles

Definitions

  • the object of the invention is a method for signalling the state of an element of transport infrastructure and a set for the realisation of this method.
  • the invention relates to an improvement with respect to efficient notification of users of transport infrastructure about the state or specific features of the place in which they are currently in.
  • This data is transmitted at short distances (in the order of several, or about a dozen metres) by means of geolocation beacons of the Bluetooth Low Energy (BLE) standard and the so-called BLE marketing channel, only in the broadcast mode, to all receiving devices (smartphones) present at the given moment within the radio signal range of a notifying device.
  • BLE Bluetooth Low Energy
  • Signalling of the state of transport infrastructure is traditionally realised by informing about a long-term change in the state of the given road fragment (or a specific device, located within this fragment) by means of mass media - announcements, information boards or even sheets of paper with proper information in print, or people who provide such information (for example, a police officer who directs local traffic during a traffic accident).
  • Another method involves embedding notification about a change in the state into road devices, such as traffic lights on crossroads (the popular "light”), or acoustic signals for the visually impaired. Such notification is partially included in the traffic code (mainly the traffic lights), and due to this it is largely standardised.
  • the traffic light must be in sight, which is not always possible (e.g. the lights are covered by a lorry in a lane ahead of us, the sun is shining such that the contrast of the signal is insufficient, rain or snow is falling which blurs the view, etc.).
  • traffic lights are only available to people with regular eyesight and not suffering from eye diseases or impairments, like colour blindness or myopia.
  • acoustic signalling accompanying light signals is not standardised by the law and it often changes in form (usually they are simple sounds with a specified frequency), which leads to misunderstandings and requires prior knowledge of local "customs" in that regard. It leads to unrealisticities such as a sound signalling a possibility to cross the street in one place, and several streets away - a similar sound prohibiting crossing.
  • Document US 20120206483 A1 discloses a solution which uses transmission in a band of 700 MHz and 5.9 MHz, which radio ranges are not directly supported by smartphones, nor are they placed within the so-called “citizen band”.
  • the solution is rather used to inform about unexpected obstacles on the path of movement (e.g. a pedestrian on a crossing), also not providing for the use of any elements of infrastructure of geolocation beacons.
  • the solution works in a given vehicle (information about an obstacle on a local screen, alternatively on the windscreen - a head-up display).
  • the solution does not provide for the notification of other devices in vehicles or elements of transport infrastructure, nor does it use radio-based digital transmission of data (radio waves are used only as a sensor radio beam).
  • the solution proposed in the invention enables the use of a smartphone as a receiving/notifying device, both inside a vehicle, as well as in pedestrian traffic, and the arrangement of distinguishable transmission devices in intervals of even several metres and the presence of numerous receivers in the same place using the same transmitter.
  • the proposed solution also provides for the use of some extensions of the iBeacon Marketing Channel information exchange standard, not introducing its own information representation standard.
  • Document WO2017181881 (A1) (D2) describes Bluetooth transmitters integrated with traffic lights and automation of the selection of traffic priority for vehicles at a crossroads.
  • the solution provides for the possibility of automation in determining the order of vehicles passing through a critical section or alerts the drivers about a possible conflict, by repeating information from light signals in Bluetooth transmission, by means of LED lamps with integrated radio transmitters.
  • the solution does not provide for the use of geolocation beacons, nor does it predict the transmission of information about future changes in the state (only the current state).
  • the solution assumes integration of Bluetooth transmission with LED lights only.
  • the proposed solution integrates beacons with any element of transport infrastructure, including one lacking a power supply (like, e.g.
  • the proposed solution uses the popular BLE Marketing Channel standard, which enables interpretation oF the signal by means oF a commonly available programming code and a standard smartphone with a BLE radio transmission module.
  • Document CN206058524 (U) (D3) describes a specialised controller oF traFFic lights which can communicate with a controlling/managing device by means oF Bluetooth transmission.
  • the device does not enable notiFication oF drivers about a change in the state - the communication module serves solely For programming the operation oF the device by an administrator.
  • This module works in a classic pairing mode (which requires prior mutual registration oF each transmitter-receiver pair) using the popular HC-06 module, which does not realise BLE transmission, nor can it work as a BLE geolocation beacon to transmit in the broadcasting mode the state oF the device via radio.
  • documents D1 -D3 disclose elements oF transport inFrastructure, including traFFic lights, provided with elements oF uni- and bidirectional radio communication.
  • elements which are devices mounted inside vehicles.
  • They Focus on traFFic lights on crossroads, skipping other elements, like roadworks, accidents, damaged road surFace, high curbs - impediments not only For drivers, but also For pedestrians.
  • the documents do not disclose the transmission oF data to mobile telephones present at the same place oF the road, nor the use oF systems like iBeacon location beacons or BLE radio transmission.
  • the purpose oF the present invention is to provide a new, improved method For signalling the state oF an element oF transport inFrastructure and a set For the realisation oF this method that lacks the abovementioned disadvantages, as well as to improve eFFicient notiFication oF the users oF transport inFrastructure about the state or speciFic Features oF their current location.
  • a method for signalling the state oFan element oF transport inFrastructure according to the invention comprises:
  • a radio transmission module operating in a 2.4 GHz band, using the IEEE 802.1 5.1 communication standard (Bluetooth) mounted on an element oF transport inFrastructure transmits in a broadcasting mode, unidirectionally without conFirmation a signal comprising digital inFormation including the identiFier, type and state oF an element oF transport inFrastructure;
  • Bluetooth IEEE 802.1 5.1 communication standard
  • a portable telephone or computer device in particular a smartphone, a tablet or a laptop, provided with a receiver operating in a 2.4 GHz band, using the IEEE 802.15.1 communication standard (Bluetooth) receives said signal comprising digital inFormation, processes this inFormation and according to the user's predeFined settings - notifies the user, in particular by means oF an acoustic, mechanical and in particular vibrating signal, and/or a visual signal, in particular in the Form oF a displayed message, image or animation on the screen oF said portable telephone or computer device.
  • Bluetooth Bluetooth
  • radio transmission module oF the iBeacon type, operating in the BLE mode (Bluetooth Low Energy), in particular in the "Marketing Channel” mode.
  • radio transmission module reversibly, permanently or integrally connected to an element oF transport inFrastructure.
  • a radio transmission module powered by means oF an external power supply or provided with an autonomous power supply, preFerably a battery, accumulator and/or a solar panel.
  • a radio transmission module mounted on an element oF Fixed transport inFrastructure, preFerably in the Form oF traFFic lights, horizontal or vertical signs, lighting elements, e.g. lanterns, surFace elements, e.g. curbs, decorative elements, trees and decorative plants, tracks, poles and masts, including catenary, Fences, or mounted on an element oF mobile transport inFrastructure, e.g. in the Form oF portable traFFic lights, temporary horizontal signs and portable vertical signs, portable lighting elements, including warning lights, barriers, posts, tapes, surFace elements, e.g. manhole covers, portable decorative elements, trees and decorative plants, portable poles and masts, vehicles, pedestrians, animals.
  • lighting elements e.g. lanterns
  • surFace elements e.g. curbs, decorative elements, trees and decorative plants, tracks, poles and masts, including catenary, Fences
  • an element oF mobile transport inFrastructure e.g. in the Form
  • the portable telephone or computer device in particular a smartphone, a tablet or a laptop, Filters the received digital inFormation according to the user's predeFined settings and alternatively does not notiFy the user.
  • the filter uses Filtering based on the source oF the signal, e.g. the type oF inFrastructure and/or the identifier oF an element oF inFrastructure, and/or the state oF an element oF inFrastructure, according to the user's settings.
  • it uses Filtering due to the power oF the received signal, according to the user's settings.
  • said radio transmission module emits a signal comprising digital inFormation in the Form oF a data Frame divided into standardised parts, in particular having part oF an identifier, in which said digital inFormation is placed in part oF the identifier, in particular in the minor and major Fields, oF a communication protocol oF the IEEE 802.15.1 communication standard (Bluetooth), this information comprising individual identifier of said radio transmission module, the type of the model of transport infrastructure and the state of the element of transport infrastructure.
  • a communication protocol oF the IEEE 802.15.1 communication standard (Bluetooth)
  • the invention also comprises a set for signalling the state of an element of transport infrastructure, configured for the realisation of the method according to the invention, which comprises:
  • a radio transmission module adjusted to operate in a 2.4 GHz band, in the IEEE 802.15.1 communication standard (Bluetooth) to be mounted on an element of transport infrastructure, configured to transmit in a broadcasting mode, unidirectionally without confirmation, a signal comprising digital information including the identifier, type and state of an element of transport infrastructure;
  • Bluetooth IEEE 802.15.1 communication standard
  • a portable telephone or computer device in particular a smartphone, a tablet or a laptop, provided with a receiver operating in a 2.4 GHz band, using the IEEE 802.15.1 communication standard (Bluetooth) configured to receive said signal comprising digital information, process this information and according to the user's predefined settings - notify the user, in particular by means of an acoustic, mechanical and in particular vibrating signal, and/or a visual signal, in particular in the form of a displayed message, image or animation on the screen of said portable telephone or computer device.
  • Bluetooth Bluetooth
  • the set comprises a radio transmission module of the iBeacon type, operating in the BLE mode (Bluetooth Low Energy), in particular in the "Marketing Channel” mode.
  • BLE mode Bluetooth Low Energy
  • the set comprises a radio transmission module intended for its reversible, permanent or integral connection to an element of transport infrastructure.
  • the set comprises a radio transmission module powered by means of an external power supply or provided with an autonomous power supply, preferably a battery, accumulator and/or a solar panel.
  • an autonomous power supply preferably a battery, accumulator and/or a solar panel.
  • the set comprises a radio transmission module intended to be mounted on an element of fixed transport infrastructure, preferably in the form of traffic lights, horizontal or vertical signs, lighting elements, e.g. lanterns, surface elements, e.g. curbs, decorative elements, trees and decorative plants, tracks, poles and masts, including catenary, fences, or mounted on an element of mobile transport infrastructure, e.g. in the form of portable traffic lights, temporary horizontal signs and portable vertical signs, portable lighting elements, including warning lights, barriers, posts, tapes, surface elements, e.g. manhole covers, portable decorative elements, trees and decorative plants, portable poles and masts, vehicles, pedestrians, animals.
  • lighting elements e.g. lanterns
  • surface elements e.g. curbs, decorative elements, trees and decorative plants, tracks, poles and masts, including catenary, fences
  • portable lighting elements e.g. in the form of portable traffic lights, temporary horizontal signs and portable vertical signs, portable lighting elements, including warning lights, barriers, posts, tapes, surface elements, e.
  • the set comprises a portable telephone or computer device, in particular a smartphone, a tablet or a laptop configured to filter the received digital information according to the user's predefined settings and alternatively do not notify the user.
  • a portable telephone or computer device in particular a smartphone, a tablet or a laptop configured to filter the received digital information according to the user's predefined settings and alternatively do not notify the user.
  • the set comprises a portable telephone or computer device, in particular a smartphone, a tablet or a laptop configured to filter the received digital information based on the source of the signal, e.g. the type of infrastructure and/or the identifier of an element of infrastructure and/or the state of an element of infrastructure, according to the user's settings.
  • a portable telephone or computer device in particular a smartphone, a tablet or a laptop configured to filter the received digital information based on the source of the signal, e.g. the type of infrastructure and/or the identifier of an element of infrastructure and/or the state of an element of infrastructure, according to the user's settings.
  • the set comprises a portable telephone or computer device, in particular a smartphone, a tablet or a laptop configured to filter the received signal with respect to its strength, adequately to the user's settings.
  • a portable telephone or computer device in particular a smartphone, a tablet or a laptop configured to filter the received signal with respect to its strength, adequately to the user's settings.
  • the set comprises a radio transmission module configured to emit a signal comprising digital information in the form of a data frame divided into standardised parts, in particular having part of an identifier, in which said digital information is placed in part of the identifier, in particular in the minor and major fields, of a communication protocol of the IEEE 802.15.1 communication standard (Bluetooth), this information comprising individual identifier of said radio transmission module, the type of the model of transport infrastructure and the state of the element of transport infrastructure.
  • a radio transmission module configured to emit a signal comprising digital information in the form of a data frame divided into standardised parts, in particular having part of an identifier, in which said digital information is placed in part of the identifier, in particular in the minor and major fields, of a communication protocol of the IEEE 802.15.1 communication standard (Bluetooth), this information comprising individual identifier of said radio transmission module, the type of the model of transport infrastructure and the state of the element of transport infrastructure.
  • Bluetooth IEEE 802.15.1 communication standard
  • fig. 3 Indicator of traffic light changing at a crossroad as an example of notifying about the state of an element of road infrastructure by means of a smartphone
  • variable BLE identifier somehow departs from the standard (somehow, since formally the standard does not introduce any limitations in here), but this slight change prevents the use of current location solutions (as part of the presented invention, a suitable scanner has been developed, resistant to such situations - however, this software is not currently and commonly available).
  • the presented invention has managed to solve the problem of the lack of an efficient method for notifying about a change in the state of a transport infrastructure or device.
  • BLE Bluetooth Low Energy standard
  • modified geolocation beacons operating with the use of this standard, as well as smartphones as devices of basic contact with the user (human).
  • the notifying device being the essence of the described invention, operates based on the following principles:
  • connection to the displaying device is made automatically, as soon as both devices are within direct range of BLE radio transmission (from several to about a dozen metres);
  • radio transmission is local and it proceeds only in one direction - from the notifying to the notified device (smartphone), without confirmation;
  • the transmitted signal comprises identifier of the type of the given place (e.g., a traffic light, a road obstruction, a pedestrian crossing, a high curb, etc.) and its state (on/off, active or passive, time until changing the state, etc.);
  • the type of the given place e.g., a traffic light, a road obstruction, a pedestrian crossing, a high curb, etc.
  • its state on/off, active or passive, time until changing the state, etc.
  • the notified device autonomously decides which actions to take after receiving the notification.
  • the following signalling is possible:
  • acoustic an acoustic signal or voice message synthesis
  • the notifying device is realised with the use of a Bluetooth Low Energy transmission module operating in the "geolocation beacon" mode.
  • the use of the beacon differs from the classic one in that a part of the identifier (specifically, the “minor” and “major” fields) is used as a variable and shows the current state and type of the given fragment of transport infrastructure (e.g., a curb/edge of the carriageway, a traffic light, a pedestrian crossing, an elevator, etc.).
  • the state of the device depends on its current condition and type - for example, for a traffic light it will be the current colour of the displayed signal and seconds remaining until its change, for signalling of roadworks - the predicted time of their completion, etc.
  • the signal from a beacon reaches by broadcasting all BLE receivers (smartphones) which are present nearby (meaning within a radius from several to about a dozen metres, depending on the programmed power of the transmitter).
  • BLE receivers smarttphones
  • Receivers provided with a suitable application operating in the background receive the signal and interpret the transmitted information. If the information is of significance for the owner of a smartphone, it is presented in an acoustic or visual form by means of this device. For example, after approaching a signal, on the screen we see the colour of lights and the number of seconds which are remaining until its change (Fig.
  • our smartphone can also detect (based on information from built-in sensors like an accelerometer) whether we are walking or driving a car, and properly adjust the presented information to our current situation.
  • a notifying device built into the transport infrastructure transmits radio signal in regular time intervals, its structure corresponding to the frame of the so-called BLE marketing channel (Fig. 1).
  • the frame contains a constant part (comprising, among other things, a unique identifier of the notifying type) and a variable part, symbolising the current state of the given fragment of infrastructure.
  • the frame is transmitted in the BLE radio band at a small distance in broadcast mode and without confirmation.
  • the device broadcasting the signal does not know who will receive it, but due to this, the signal may reach many (even hundreds or thousands) receiving devices in a very short time, counted in milliseconds.
  • notification can also be related to fast-changing states, for example the number of vehicles on the given segment of a road, the occupancy of parking spaces, moments of changing traffic lights, etc., although on the other hand it might just as well reflect slow-changing situations, like ice on the given segment of a road, a big hole in the carriageway, or a high curb, etc.
  • the signal is received by a smartphone and monitoring software running in the background (the so-called BLE scanner).
  • Each received information is analysed in terms of repetitiveness (whether it had been lasting for some time and was already previously signalled, or whether it has just appeared) and its content.
  • the second aspect of the analysis is related to associating the contents with a proper context and the preferences of the person receiving the notification.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephone Function (AREA)

Abstract

La présente invention concerne un procédé de signalisation de l'état d'un élément d'infrastructure de transport : - un module de transmission radio fonctionnant dans une bande de 2,4 GHz, utilisant la norme de communication IEEE 802.15.1 (Bluetooth) et monté sur un élément d'infrastructure de transport transmet, dans un mode de diffusion, de manière unidirectionnelle et sans confirmation, un signal comprenant des informations numériques incluant l'identifiant, le type et l'état d'un élément d'infrastructure de transport ; - un téléphone portable ou un dispositif informatique, en particulier un téléphone intelligent, une tablette ou un ordinateur portable pourvu d'un récepteur fonctionnant dans une bande de 2,4 GHz et utilisant la norme de communication IEEE 802.15.1 (Bluetooth), reçoit ledit signal comprenant des informations numériques, traite ces informations et, sur la base de réglages prédéfinis de l'utilisateur, - notifie l'utilisateur, en particulier au moyen d'un signal acoustique, d'un signal mécanique et en particulier d'un signal de vibration et/ou d'un signal visuel, plus particulièrement sous forme d'un message, d'une image ou d'une animation affiché sur l'écran dudit téléphone portable ou dudit dispositif informatique. La présente invention concerne également un ensemble destiné à la mise en œuvre de ce procédé.
PCT/IB2019/051961 2018-03-14 2019-03-11 Procédé de signalisation de l'état d'un élément d'infrastructure de transport et ensemble destiné à la mise en œuvre de ce procédé Ceased WO2019175747A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19720697.2A EP3766057A1 (fr) 2018-03-14 2019-03-11 Procédé de signalisation de l'éltat d'un élément d'infrastructure de transport et ensemble destiné la mise enoeuvre de ce procédé

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Application Number Priority Date Filing Date Title
PL424880A PL424880A1 (pl) 2018-03-14 2018-03-14 Sposób sygnalizacji stanu elementu infrastruktury transportowej i zestaw do realizacji tego sposobu
PLP.424880 2018-03-14

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WO2019175747A1 true WO2019175747A1 (fr) 2019-09-19

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5214793A (en) * 1991-03-15 1993-05-25 Pulse-Com Corporation Electronic billboard and vehicle traffic control communication system
US6861959B1 (en) * 1999-10-27 2005-03-01 Jose Maria Minguella Llobet Help and/or risk signaling means for the traffic of vehicles and pedestrians using a short range infrared or electromagnetic signaling system
US20120206483A1 (en) * 2010-12-28 2012-08-16 Denso Corporation Obstacle information notification apparatus for vehicle
WO2016083817A1 (fr) * 2014-11-28 2016-06-02 Neatebox Limited Appareil pour système de régulation de la circulation
CN206058524U (zh) * 2016-09-29 2017-03-29 重庆大学 一种基于单片机和蓝牙模块的路口交通灯信号控制装置
WO2017181881A1 (fr) * 2016-04-22 2017-10-26 深圳市以捷创新科技有限公司 Signal de régulation de circulation monté sur la route avec fonctionnalité de communication bluetooth

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206302573U (zh) * 2016-12-08 2017-07-04 东北大学秦皇岛分校 一种基于ibeacon技术的室内定位无人运输车

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5214793A (en) * 1991-03-15 1993-05-25 Pulse-Com Corporation Electronic billboard and vehicle traffic control communication system
US6861959B1 (en) * 1999-10-27 2005-03-01 Jose Maria Minguella Llobet Help and/or risk signaling means for the traffic of vehicles and pedestrians using a short range infrared or electromagnetic signaling system
US20120206483A1 (en) * 2010-12-28 2012-08-16 Denso Corporation Obstacle information notification apparatus for vehicle
WO2016083817A1 (fr) * 2014-11-28 2016-06-02 Neatebox Limited Appareil pour système de régulation de la circulation
WO2017181881A1 (fr) * 2016-04-22 2017-10-26 深圳市以捷创新科技有限公司 Signal de régulation de circulation monté sur la route avec fonctionnalité de communication bluetooth
CN206058524U (zh) * 2016-09-29 2017-03-29 重庆大学 一种基于单片机和蓝牙模块的路口交通灯信号控制装置

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PL424880A1 (pl) 2019-09-23

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