EP1271446A1 - Système d'avertissement et de détection de la présence d'un appareil de contrôle de vitesse - Google Patents

Système d'avertissement et de détection de la présence d'un appareil de contrôle de vitesse Download PDF

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Publication number
EP1271446A1
EP1271446A1 EP02254157A EP02254157A EP1271446A1 EP 1271446 A1 EP1271446 A1 EP 1271446A1 EP 02254157 A EP02254157 A EP 02254157A EP 02254157 A EP02254157 A EP 02254157A EP 1271446 A1 EP1271446 A1 EP 1271446A1
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EP
European Patent Office
Prior art keywords
vehicle
speed
speed trap
location
motorway
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.)
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Application number
EP02254157A
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German (de)
English (en)
Inventor
Timothy Michael Origin Technologies Limited Rock
Mark David Origin Technologies Limited Groves
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Origin Technologies Ltd
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Origin Technologies Ltd
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Publication of EP1271446A1 publication Critical patent/EP1271446A1/fr
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    • 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
    • G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed

Definitions

  • This invention relates to a speed trap detection and warning system for alerting the driver of a vehicle to the presence of a nearby speed trap (such as a speed camera, radar gun detector etc) and in particular to a system which provides a low false alarm rate.
  • a nearby speed trap such as a speed camera, radar gun detector etc
  • Speed traps of a number of different types are used in increasing numbers by law enforcement authorities around the world. These include active traps (Gatso cameras, radar guns, laser guns, etc) and passive traps (VASCAR type detectors, SPECS type detectors, etc).
  • radar detectors for use in vehicles are known. These work by detecting the radar signals from a radar-operated speed trap and provide an alert that radar signals are incident on the vehicle. Radar detectors suffer from the problem, however, that they may be set off by things other than speed traps which operate on similar frequencies. For example, traffic lights, building alarm systems and petrol stations may trigger a radar detector. The radar detector may therefore provide many false alarms, thereby reducing the usefulness of the detector since it is irritating to the driver and encourages the driver to undertake rapid braking regularly and, from the point of view of other road users, at random.
  • EP-A-0789344 discloses a device which stores the locations of speed traps in a database, monitors the location of the vehicle in which it is installed for example using satellite GPS (Global Positioning System) techniques, compares the vehicle location against the stored speed trap locations, and warns the driver if the vehicle travels within a predetermined distance of a speed trap.
  • satellite GPS Global Positioning System
  • the inventor in the present application has realised that a driver is often alerted to a speed trap located on a nearby road (rather than the one on which he is travelling) due to inaccuracies in calculating the position of the vehicle.
  • a speed trap located on a nearby road (rather than the one on which he is travelling) due to inaccuracies in calculating the position of the vehicle.
  • This is a particular problem because many roads run nearby, or over, motorways.
  • an apparatus and method for alerting the driver of a vehicle to a speed trap by monitoring the position of the vehicle against one or more stored speed trap databases to determine whether the vehicle is within a predetermined distance of a speed trap.
  • the database(s) or the data therein distinguishes between speed traps situated on a motorway and speed traps situated on other types of roads.
  • the driver is alerted if the vehicle approaches within a predetermined distance of a motorway speed trap, but is not alerted if the vehicle travels within a predetermined distance of a non-motorway speed trap.
  • the driver is alerted if the vehicle approaches within a predetermined distance of a non-motorway speed trap, but not when the vehicle approaches a motorway speed trap.
  • Instructions about whether the vehicle is travelling on a motorway may be input manually (for example by the driver) and/or automatically based on vehicle location and/or speed.
  • a road network comprises a motorway 1 and a plurality of non-motorway roads 2,3 along which a plurality of speed traps (in this example, fixed speed cameras) 4,5,6 are deployed.
  • a plurality of speed traps in this example, fixed speed cameras
  • Driving along the motorway 1 is a vehicle 9, which is equipped with a speed trap detection and warning unit 11.
  • the speed trap detection and warning unit 11 has stored within it, among other things, the satellite GPS (Global Positioning System) positions of the speed traps 4,5,6, together with data defining the road number (which defines whether the road is a motorway or not), the respective speed limit for the part of the road at which each speed trap 4,5,6 is situated, and the direction of travel in which the speed trap is operational (that is, the direction in which each speed trap is pointing to record speeding vehicles).
  • GPS Global Positioning System
  • the speed trap detection and warning unit 11 uses signals from satellites 7 belonging to the NAVSTAR (NAVigation System with Time And Ranging) GPS system to determine its position, speed and direction of travel (and hence the position, speed and direction of travel of the vehicle 9), compares these parameters with the positions, operating directions and speed limits of the speed traps 4,5,6 stored in its internal database, and provides a warning to the driver of the vehicle 9 when a speed trap 4,5,6 which is operational in the direction of travel of the vehicle 9 is being approached and the speed of the vehicle 9 exceeds the speed limit at the speed trap 4,5,6.
  • the speed trap detection and warning unit 11 has a "motorway operating mode" for selection when the vehicle is travelling on a motorway.
  • the speed trap detection and warning unit 11 is arranged to provide any warning well in advance of the speed trap 4,5,6 enabling the driver to reduce speed progressively, thereby increasing safety for the driver and other road users.
  • the speed trap detection and warning unit 11 comprises a display and processing unit 15 and a power connector 17.
  • the display and processing unit 15 comprises an antenna 23 for receiving signals from the satellites 7, processing hardware and memory (not shown in Figure 2, but described below) to process the received signals, a liquid crystal display 25 for displaying information to a user, a speaker 27 for providing audible signals to a user and input buttons 29 for the input of instructions by a user to control the speed trap detection and warning unit 11.
  • the input buttons 29 include one or more buttons for the driver to press to activate and deactivate the motorway operating mode when the vehicle 9 joins and leaves a motorway 1, respectively.
  • a telephone lead socket 31 is provided for connecting the speed trap detection and warning unit 11 to a remote database for loading and updating information about, inter alia, the positions of speed traps 4,5,6, the speed limits thereat and the operational directions thereof as further speed traps are added to the road network.
  • the power connector 17 comprises an adapter for drawing power from a motor vehicle cigarette lighter socket (not shown).
  • FIG. 3 is a block diagram showing the functional elements of the display and processing unit 15.
  • the antenna 23 receives signals from the GPS satellites 7 and sends them to a GPS receiver/decoder 41.
  • the GPS receiver/decoder 41 is a conventional component, such as the Trimble Navigation LassenTM - SK8 Embedded GPS Core Module, which processes the received GPS signals and outputs what is known in the art as a "navigation solution", which comprises a data stream defining the position, speed and direction of travel of vehicle 9.
  • the navigation solution from the GPS receiver/decoder 41 is passed to a central processing unit (CPU) 43 which operates according to instructions stored in an operating instruction store 45 to perform processing as will be described below.
  • Working memory 51 is provided for the CPU 43 to use while performing processing.
  • the GPS positions of the speed traps 4,5,6 together with known positions at which it is common for police to operate a mobile speed trap (such as a radar gun or laser gun) are stored in a speed trap database 49. Also stored in the speed trap database 49 in this embodiment is data defining the road speed limit at each speed trap location, the type of each speed trap (that is, the detection method by which it operates and/or whether it is a fixed or a mobile site), the direction of travel in which each speed trap is operational and the number of the road on which each speed trap is located (which also defines whether the speed trap is a motorway speed trap or a non-motorway speed trap).
  • CPU 43 compares the navigation solution in the data from the GPS receiver/decoder 41 with the data from the speed trap database 49, and displays information to the driver of the vehicle 9 via the display 25 and/or generates an audible alert through the speaker 27.
  • Input buttons 29 are provided for the user to select the operating mode of the speed trap detection and warning unit 11 (including the motorway operating mode), and to change operating parameters such as the volume of audible alerts and the information to be displayed on the screen.
  • one of the buttons 29 is arranged to set the speed trap detection and warning unit 11 into motorway operating mode when it is pressed by the driver (when the vehicle 9 joins a motorway 1) and another of the buttons is arranged to cancel the motorway operating mode when it is pressed by the driver (when the vehicle 9 leaves the motorway 1).
  • a telephone interface 53 is provided for connecting with a remote database 55, which is not a part of the speed trap detection and warning unit 11, via the telephone lead socket 31. That is, a cable (not shown) is used to connect between the telephone lead socket 31 and a telephone network (not shown) so as to connect the speed trap detection and warning unit 11 to a remote database 55 which is also connected to the telephone network.
  • the remote database 55 stores data for storage in the speed trap database 49 defining the position of each speed trap 4,5,6 the road number of the road on which each speed trap is located, the speed limit of the road for the position at which the speed trap is located, the operating direction(s) of each speed trap and the type of speed trap.
  • the data in database 55 is updated when an additional speed trap is added to the road network or when an additional site at which a mobile speed trap is frequently used becomes known, when new roads are added to the road network 1 or when the speed limit for an existing road is changed.
  • the telephone interface 53 allows the CPU 43 to execute the update database function to use information from the remote database 55 to replace the data stored in the speed trap database 49.
  • step S4-2 the GPS receiver/decoder 41 generates a navigation solution and transmits it to the CPU 43.
  • the CPU 43 then extracts from the navigation solution the current speed at which the speed trap detection and warning unit 11 (and hence the vehicle 9) is travelling, the position of the vehicle 9 and the direction of travel of the vehicle 9.
  • step S4-4 the CPU 43 checks to determine whether a navigation solution has been generated.
  • a navigation solution may not be generated for example whilst the vehicle 9 is within a road tunnel, or if landscape or architectural features prevent the GPS receiver/decoder 41 from receiving enough satellite signals to generate a navigation solution.
  • the GPS receiver/decoder 41 may require up to a few minutes to generate a first navigation solution. If it is determined at step S4-4 that no navigation solution has been generated, then at step S4-6 the CPU 43 causes a warning to be displayed on display 25 and the process returns to step S4-2. On the other hand, if it is determined at step S4-4 that a navigation solution has been generated, then the process continues to step S4-8.
  • the CPU 43 causes the current vehicle speed to be displayed on the display 25.
  • the current vehicle speed continues to be displayed on the display 25 until, on a future cycle, the speed is determined to have changed, at which time the display 25 is updated to display the new current vehicle speed. Accordingly, the display of the current vehicle speed on the display 25 is updated continuously in accordance with the operational cycle rate, which in this embodiment, is once per second.
  • CPU 43 compares the current location of the vehicle 9 as determined from the navigation solution generated at step S4-2 to the stored locations of speed trap sites stored in the speed trap database 49.
  • step S4-12 CPU 43 determines whether any speed trap sites are within a first predetermined distance of the vehicle 9, which, in this embodiment is set to 500 metres. If no speed trap sites are within the first predetermined distance of the vehicle 9, processing returns to step S4-2 to await the generation of a new navigation solution for processing.
  • step S4-12 determines whether one or more speed trap sites are within the first predetermined distance of the vehicle 9
  • step S4-14 CPU 43 determines whether the motorway operating mode is currently set.
  • CPU 43 determines whether any of the speed traps identified at step S4-12 is a motorway speed trap. More particularly, in this embodiment, CPU 43 determines whether each of the speed traps identified at step S4-12 is a motorway speed trap by reading the data stored in speed trap database 49 defining the road number of the road on which the speed trap is located and determining whether the road number is prefixed by the letter "M" (indicating a motorway number).
  • step S4-16 If it is determined at step S4-16 that none of the speed traps identified at step S4-12 is a motorway speed trap, then processing returns to step S4-2 to await the generation of a new navigation solution for processing.
  • step S4-16 determines whether at least one of the speed traps is a motorway speed trap, or if it is determined at step S4-14 that the motorway operating mode is not selected. If it is determined at step S4-16 that at least one of the speed traps is a motorway speed trap, or if it is determined at step S4-14 that the motorway operating mode is not selected, then processing proceeds to step S4-18.
  • a speed trap identified at step S4-12 (that is, a speed trap towards which the vehicle 9 has approached within a predetermined distance) is not processed further if the motorway operating mode has been selected and the speed trap is situated on a non-motorway road. In this way, false alarms caused by non-motorway speed traps when the vehicle 9 is travelling on a motorway 1 are eliminated.
  • the driver when vehicle 9 is travelling on motorway 1 the driver is not alerted when the vehicle 9 approaches within a predetermined distance of speed trap 5 or speed trap 6. However, as will be explained below, the driver may be alerted when the vehicle 9 approaches speed trap 4.
  • CPU 43 compares the direction of travel of the vehicle 9 (previously determined at step S4-2) to the location of the speed trap site(s) identified at step S4-12 (it being noted that the vehicle direction of travel is compared against the location of only motorway speed traps identified at step S4-12 if it was determined at step S4-14 that the motorway operating mode is currently selected).
  • CPU 43 determines whether or not the vehicle 9 is travelling towards any of the identified speed trap sites. More particularly, in this embodiment, CPU 43 determines whether the distance between the vehicle and a speed trap site is decreasing (in which case it is determined that the vehicle is travelling towards the speed trap) or increasing (in which case it is determined that the vehicle is travelling away from the speed trap).
  • CPU 43 determines whether the vehicle is still within a second predetermined distance of the speed trap site.
  • the second predetermined distance represents the range over which the speed trap may operate, and, in this embodiment, is set to 100 metres.
  • step S4-22 If it is determined at step S4-22 that the vehicle 9 is beyond the second predetermined distance of the speed trap site then the processing returns to step S4-2 and a new navigation solution is processed.
  • step S4-20 determines whether the vehicle 9 is travelling towards the speed trap site or it is determined at step S4-22 that the vehicle is still within the second predetermined distance of the speed trap site. If it is determined at step S4-20 that the vehicle 9 is travelling towards the speed trap site or it is determined at step S4-22 that the vehicle is still within the second predetermined distance of the speed trap site, then the processing proceeds to step S4-24.
  • CPU 43 compares the direction of travel of the vehicle 9 to the direction in which the speed trap is operational. This comparison is to ensure that the driver of the vehicle 9 is not alerted when the vehicle 9 is approaching a speed trap which cannot trap the vehicle 9 because the trap is directed or positioned to trap vehicles which are approaching the speed trap from a direction different to the direction of travel of the vehicle 9 (for example, the speed trap may be positioned on the opposite side of the road to the side on which vehicle 9 is travelling, so as to trap vehicles travelling in the opposite direction).
  • CPU 43 determines whether the vehicle 9 is travelling in a direction in which the speed trap is operational.
  • step S4-26 If it is determined at step S4-26 that the vehicle 9 is not travelling in a direction in which the speed trap is operational, processing returns to step S4-2 and a new navigation solution is processed.
  • step S4-26 if it is determined at step S4-26 that the vehicle 9 is travelling in the direction in which the speed trap is operational, then the processing proceeds to step S4-28.
  • CPU 43 compares the speed of travel of the vehicle 9 (previously determined at step S4-2) to the road speed limit at the speed trap site stored in speed trap database 49. It is then determined at step S4-30 whether the speed of travel of the vehicle 9 is greater than the speed limit at the speed trap site.
  • step S4-30 If the speed of travel is determined at step S4-30 to be less than the speed limit of the speed trap site, then the processing returns to step S4-2 and a new navigation solution is processed.
  • step S4-30 determines whether the speed of travel of the vehicle 9 is greater than the speed limit at the speed trap site. If it is determined at step S4-30 that the speed of travel of the vehicle 9 is greater than the speed limit at the speed trap site, then, at step S4-32, CPU 43 causes an audible alarm to be emitted from the speaker 27 and causes the speed limit, type of speed trap and road number at the speed trap site to be displayed on display 25 so that the user can compare his current speed, as displayed on the display 25 in step S5-4, to the speed limit at the speed trap site and adjust the speed of the vehicle 9 accordingly. The processing then returns to step S4-2 and a new navigation solution is processed.
  • the components of the second embodiment and the processing operations performed thereby are the same as those of the first embodiment, with the exception of the structure of the speed trap database 49 and the processing operations performed to determine which speed traps are a threat to the vehicle 9 based on whether the motorway operating mode is selected or not.
  • step S4-10 and S4-12 all of the speed trap locations stored in speed trap database 49 are searched to identify any speed trap which is within a predetermined distance of the vehicle 9. That is, the locations of both motorway speed traps and non-motorway road speed traps are searched.
  • steps S4-14 and S4-16 non-motorway speed traps identified at steps S4-10 and S4-12 are discarded if the motorway operating mode is set.
  • the speed trap database 49 is replaced by two separate speed trap databases - one storing data relating to motorway speed traps and one storing data relating to non-motorway road speed traps.
  • steps S5-2 to S5-8 are the same as steps S4-2 to S4-8, and steps S5-18 to S5-32 are the same as steps S4-18 to S4-32 in the first embodiment. Accordingly, these steps will not be described again here, and instead, only the processing operations which are different to those performed in the first embodiment (that is steps S5-10 to S5-16) will be described.
  • CPU 43 determines whether the motorway operating mode is currently selected.
  • step S5-12 CPU 43 compares the vehicle's current location (determined at step S5-2) with the stored locations of speed traps in the motorway speed trap database.
  • step S5-14 CPU 43 compares the vehicle's current location with the speed trap locations stored in the non-motorway speed trap database.
  • the processing in the second embodiment ensures that the driver does not receive false alarms from non-motorway speed traps 5,6 when vehicle 9 is travelling on motorway 1, and further ensures that the driver does not receive false alarms from motorway speed trap 4 when vehicle 9 is travelling on a non-motorway road 2,3.
  • CPU 43 determines whether any speed trap site is within a first predetermined distance of the vehicle 9. Processing then proceeds in the same way as described above in the first embodiment.
  • the location of the vehicle 9 is determined using GPS processing.
  • any radio navigation system providing sufficient accuracy in determining position may be utilised.
  • GLONASS the Russian equivalent to GPS
  • GNSS a proposed new satellite new navigation system
  • the location of the vehicle 9 may be determined using signals transmitted between a device such as a mobile telephone in the vehicle 9 and a plurality of fixed locations. More particularly, a positioning technique may be used such as that utilised in the CURSOR system operated by Cambridge Positioning Systems Limited and described in EP 0303371, WO97/11384, WO99/11086 and WO99/21028.
  • ETSI TS 101 528 sets out the standard for GSM Enhanced Observed Time Difference (EOTD) location services as used in Cambridge Positioning Systems CURSOR system and other similar systems.
  • EOTD Enhanced Observed Time Difference
  • the position of vehicle 9 may be calculated by an in-vehicle system for monitoring the displacement of the vehicle from a starting position.
  • Such a system may comprise, for example the vehicle's mileometer to measure distance travelled and a magnetic compass, gyroscope etc to measure changes in direction.
  • the data in the speed trap database 49 is updated from a remote database via a communications network.
  • the data may be updated by providing a storage device (such as a cartridge, disk, etc) storing the data for insertion into the speed trap detection and warning unit 11.
  • data could be entered manually into the database 49, for example by typing with a keyboard.
  • the motorway operating mode of the speed trap detection and warning unit 11 is activated and deactivated using one or more of the buttons 29.
  • the CPU 43 may be arranged to monitor the vehicle speed calculated at step S4-2 or step S5-2 and to sound an audible alarm when the vehicle speed drops below a predetermined value indicative that the vehicle 9 is no longer on the motorway (for example 25 miles per hour).
  • the motorway operating mode may be automatically activated, deactivated or both activated and deactivated without input from the driver.
  • a location indicative that a vehicle is joining a motorway such as a location very near every motorway junction entry slip road (for example ten metres onto the motorway from the end of the slip road, or a position on the actual slip road itself) may be stored in the speed trap detection and warning unit 11.
  • CPU 43 may then be arranged to compare the location of the vehicle 9 calculated at step S4-2 or step S5-2 with the stored motorway entry positions, and to activate the motorway operating mode if it is determined that the vehicle 9 passes such a location.
  • locations indicative that a vehicle is leaving a motorway such as the locations of every motorway junction exit slip road or a location nearby which the vehicle 9 must pass when exiting a motorway may be stored in the speed trap detection and warning unit 11 and the motorway operating mode may be deactivated when CPU 43 determines that the vehicle 9 has passed such a point.
  • data is stored in the speed trap database 49 defining the respective road number on which each speed trap is located.
  • This data is used at step S4-16 to determine whether a speed trap identified at step S4-12 is located on a motorway. More particularly, in the first embodiment, the data defining the road number is read to determine whether it begins with the letter "M", indicating that the road is a motorway.
  • this method of determining whether a speed trap is located on a motorway assumes that the road number of each motorway is prefixed by the letter "M” and that all non-motorway roads are not prefixed by the letter "M” (as is the case in the United Kingdom).
  • a letter other than the letter "M" may be used to identify motorways, and the processing must therefore be modified accordingly. Further, in some countries it may not be possible to determine whether a road is a motorway by reading the road number. In such a case, additional data may be stored in speed trap database 49 defining whether each respective road is a motorway. For example, an additional field may be provided in the database for each speed trap defining whether or not the speed trap is located on a motorway. The data in the additional field may then be read at step S4-16 to determine whether the speed trap is located on a motorway.
  • the components of the speed trap detection and warning unit are provided within the unit 11 carried by vehicle 9.
  • the components may be split between a unit carried in vehicle 9 and one or more separate processing apparatus at a remote fixed location or locations.
  • the speed trap database 49 may be stored at a remote processing apparatus which communicates with the apparatus in vehicle 9 by via a mobile telephone link.
  • Other divisions of components are also possible.

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  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
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EP02254157A 2001-06-18 2002-06-14 Système d'avertissement et de détection de la présence d'un appareil de contrôle de vitesse Withdrawn EP1271446A1 (fr)

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GB0114843 2001-06-18
GB0114843A GB2381143B (en) 2001-06-18 2001-06-18 Speed trap detection and warning system

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EP1271446A1 true EP1271446A1 (fr) 2003-01-02

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NL1026352C2 (nl) * 2004-06-07 2005-12-15 Target Automotive B V Verkeerscontrolewaarschuwingssysteem.
DE102006010572A1 (de) * 2006-03-06 2007-09-13 Gerhard Lauche Verkehrsleitsystem
NL1034129C2 (nl) * 2007-07-13 2009-01-14 Eldap B V Waarschuwingsapparaat voor snelheidscontrole.
DE102008007687A1 (de) 2008-02-06 2009-08-13 GM Global Technology Operations, Inc., Detroit Assistenzeinrichtung für ein Kraftfahrzeug mit einer Verarbeitungseinrichtung sowie einer Erkennungseinrichtung für Kontrolleinrichtungen
DE102008007686A1 (de) 2008-02-06 2009-08-13 GM Global Technology Operations, Inc., Detroit Assistenzeinrichtung für ein Kraftfahrzeug
DE102012020100A1 (de) * 2012-10-12 2014-04-17 Mitac International Corp. Verfahren zum Aufzeichnen von Nachweisen von Fahrgeschwindigkeiten und zugehörige mobile Vorrichtung
CN103902601A (zh) * 2012-12-27 2014-07-02 上海易罗信息科技有限公司 车辆固定报警点的检索方法、设备及车载导航方法、设备
JP2016106221A (ja) * 2016-01-20 2016-06-16 株式会社ユピテル 運転支援システム、情報生成方法、運転支援プログラム、及び生成プログラム
CN110444026A (zh) * 2019-08-06 2019-11-12 北京万集科技股份有限公司 车辆的触发抓拍方法及系统

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EP0782118A1 (fr) * 1995-12-26 1997-07-02 Aisin Aw Co., Ltd. Système de navigation pour véhicules
EP0789344A1 (fr) * 1996-02-10 1997-08-13 Werner Schrimpf Système de détermination de position pour véhicule
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1026352C2 (nl) * 2004-06-07 2005-12-15 Target Automotive B V Verkeerscontrolewaarschuwingssysteem.
DE102006010572A1 (de) * 2006-03-06 2007-09-13 Gerhard Lauche Verkehrsleitsystem
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WO2009011566A1 (fr) * 2007-07-13 2009-01-22 Eldap Bv Dispositif d'avertissement pour zones de vitesse contrôlée
DE102008007687A1 (de) 2008-02-06 2009-08-13 GM Global Technology Operations, Inc., Detroit Assistenzeinrichtung für ein Kraftfahrzeug mit einer Verarbeitungseinrichtung sowie einer Erkennungseinrichtung für Kontrolleinrichtungen
DE102008007686A1 (de) 2008-02-06 2009-08-13 GM Global Technology Operations, Inc., Detroit Assistenzeinrichtung für ein Kraftfahrzeug
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CN103902601B (zh) * 2012-12-27 2017-12-26 上海易罗信息科技有限公司 车辆固定报警点的检索方法、设备及车载导航方法、设备
JP2016106221A (ja) * 2016-01-20 2016-06-16 株式会社ユピテル 運転支援システム、情報生成方法、運転支援プログラム、及び生成プログラム
CN110444026A (zh) * 2019-08-06 2019-11-12 北京万集科技股份有限公司 车辆的触发抓拍方法及系统

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GB2388731B (en) 2004-03-31

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