CN106205120B - A kind of method and device for extracting road cross traffic limitation - Google Patents
A kind of method and device for extracting road cross traffic limitation Download PDFInfo
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- CN106205120B CN106205120B CN201510231132.XA CN201510231132A CN106205120B CN 106205120 B CN106205120 B CN 106205120B CN 201510231132 A CN201510231132 A CN 201510231132A CN 106205120 B CN106205120 B CN 106205120B
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Abstract
The present invention provides a kind of method and devices for extracting road cross traffic limitation, obtain vehicle in the driving trace of road cross in the driving information of a road cross and according to driving information this method comprises: obtaining multiple vehicles in real time；Obtain a plurality of communication link of road cross in the case where no traffic limitation；Driving trace by vehicle in road cross is matched with communication link, obtains the traffic conditions of road cross；According to the traffic conditions of road cross, the traffic restricted information of road cross is obtained.Method of the invention solves the problems, such as that the traffic restricted information acquisition of road cross is difficult, improve the collecting efficiency and accuracy of data, and it helps user to provide safer crossing trip, reduces crossing generation violating the regulations, more safely and quickly driving environment is provided.
Description
Technical field
The present invention relates to field of navigation technology more particularly to a kind of method and devices for extracting road cross traffic limitation.
Background technique
The traffic restricted information of current most of road cross is all that special Collection Co., Ltd is needed to be acquired and could send out
Limit is handed at existing crossing, and variation is more frequent the case where crossing, and acquisition cost is bigger.Simultaneously because the problem of more new strategy,
Cannot sometimes find in time crossing traffic limitation situation of change, cause data crossing traffic restricted information producer more
It is new slow, newest traffic restricted information cannot be sent to user, user is caused to use route planning when navigating at crossing
It is inconsistent with scene, the safety driven is influenced, it is violating the regulations to cause user, or waste time.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of method and devices for extracting road cross traffic limitation, lead to
It crosses the communication link to vehicle at the driving trace of road cross and the crossing to analyze, quickly finds crossing traffic limitation letter
The variation of breath improves the real-time of data, to provide more safely and quickly driving environment for user.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme:
According to one aspect of the present invention, a kind of method for extracting road cross traffic limitation is provided, this method comprises:
Multiple vehicles are obtained in real time obtains the vehicle in the driving information of a road cross and according to the driving information
In the driving trace of the road cross；
Obtain a plurality of communication link of road cross in the case where no traffic limitation；
Driving trace by the vehicle in the road cross is matched with the communication link, obtains the road
The traffic conditions at crossing；
According to the traffic conditions of the road cross, the traffic restricted information of the road cross is obtained.
Wherein, after obtaining the road cross traffic restricted information, the method also includes:
The traffic restricted information that sequence number (ID) information of lookup and the road cross matches in the database, and according to
The traffic restricted information in the database is updated according to the traffic restricted information of the road cross of acquisition.
Wherein, described to obtain multiple vehicles in real time in the driving information of a road cross and according to driving information acquisition
The vehicle is specifically included in the driving trace of the road cross:
Obtain in real time multiple vehicles the driving information of a road cross and according to different user informations carry out classification deposit
Storage, wherein the driving information includes the user information of vehicle, the tracing point of different moments and driving direction；
Sequentially in time, the tracing point and traveling according to vehicle corresponding to each user information in different moments
Direction obtains vehicle corresponding to each user information in the driving trace of the road cross.
Wherein, a plurality of communication link for obtaining the road cross in the case where no traffic limitation, it is specific to wrap
It includes:
Obtain sequence number (LinkID), the direction vector of the road at the ID and the road cross of the road cross
With current direction；
The entrance road of the road cross is obtained according to the LinkID, direction vector and passage direction and is driven out to
Road；
According to it is described enter road and be driven out to road, obtain in the case that the road cross is in no traffic limitation
A plurality of communication link, wherein each communication link is driven out to road into road and one including one.
Wherein, the driving trace by the vehicle in the road cross is matched with the communication link, tool
Body includes:
It is any to judge that the vehicle is located on the driving trace of the road cross with the presence or absence of at least two tracing points
Communication link enters road and is driven out on road；
If it exists, and be located at the inlet channel road tracing point driving direction and the direction vector into road
Identical, the driving direction positioned at the tracing point being driven out on road is identical as the direction vector for being driven out to road, then described
Vehicle matches in the driving trace of the road cross with the communication link；
If it does not exist, then the vehicle is mismatched in the driving trace of the road cross and the communication link.
Wherein, the traffic conditions according to the road cross obtain the traffic restricted information of the road cross, tool
Body includes:
The vehicle is calculated the case where the driving trace of the road cross matches with the communication link,
And the communication link of impassabitity is obtained according to calculated result；
Communication link according to impassabitity generates traffic restricted information.
According to another aspect of the invention, a kind of device for extracting road cross traffic limitation is additionally provided, comprising:
First obtains module, for obtaining multiple vehicles in real time in the driving information of a road cross and according to the traveling
Driving trace of the vehicle described in information acquisition in the road cross；
Second obtains module, for obtaining a plurality of current chain of road cross in the case where no traffic limitation
Road；
Matching module, for by the vehicle the road cross driving trace and the communication link carry out
Match, obtains the traffic conditions of the road cross；
Determining module obtains the traffic limitation letter of the road cross for the traffic conditions according to the road cross
Breath.
Wherein, described device further include:
Update module is believed for searching the traffic limitation to match with the id information of the road cross in the database
Breath, and the traffic restricted information of the road cross according to acquisition updates the traffic restricted information in the database.
Wherein, the first acquisition module includes:
Storage unit, for obtaining multiple vehicles in real time in the driving information of a road cross and according to different user's letters
Breath carries out classification storage, wherein the driving information includes the user information of vehicle, the tracing point of different moments and traveling side
To；
First acquisition unit is used for sequentially in time, according to vehicle corresponding to each user information when different
Tracing point and driving direction when quarter obtain vehicle corresponding to each user information in the traveling rail of the road cross
Mark.
Wherein, the second acquisition module includes:
Second acquisition unit, the LinkID at ID and the road cross, vector for obtaining the road cross
Direction and current direction；
Third acquiring unit, for obtaining the road cross according to the LinkID, direction vector and current direction
Into road and it is driven out to road；
4th acquiring unit, for according to it is described enter road and be driven out to road, obtaining the road cross and being in does not have
A plurality of communication link in the case where traffic limitation, wherein each communication link is driven out to including one into road and one
Road.
Wherein, the matching module is specifically used for:
It is any to judge that the vehicle is located on the driving trace of the road cross with the presence or absence of at least two tracing points
Communication link enters road and is driven out on road；
If it exists, and be located at the inlet channel road tracing point driving direction and the direction vector into road
Identical, the driving direction positioned at the tracing point being driven out on road is identical as the direction vector for being driven out to road, then described
Vehicle matches in the driving trace of the road cross with the communication link；
If it does not exist, then the vehicle is mismatched in the driving trace of the road cross and the communication link.
Wherein, the determining module includes:
Computing unit, for what the vehicle matched in the driving trace of the road cross and the communication link
Situation is calculated, and the communication link of impassabitity is obtained according to calculated result；
Generation unit generates traffic restricted information for the communication link according to impassabitity.
The beneficial effects of the present invention are:
The method of the extraction road cross traffic limitation of the embodiment of the present invention, by obtaining multiple vehicles in real time in a road
The driving information at crossing simultaneously obtains corresponding driving trace, thus by driving trace and road cross not traffic limitation feelings
A plurality of communication link under condition is matched, and then obtains the traffic restricted information of the road cross.It follows that the present invention is real
The method for applying the extraction road cross traffic limitation of example solves the problems, such as that the traffic restricted information acquisition of road cross is difficult, side
It helps user to find the traffic restricted information variation at crossing in time, real-time, collecting efficiency and the accuracy of data is improved, to protect
Card user route planning when road cross is using navigation is consistent with scene, provides safer and quick crossing for user
Trip reduces crossing generation violating the regulations.
Detailed description of the invention
Fig. 1 shows the method flow schematic diagrams of the extraction road cross traffic limitation of the embodiment of the present invention；
Fig. 2 indicates the structural block diagram of the device of the extraction road cross traffic limitation of the embodiment of the present invention；
Fig. 3 indicates that the first of the embodiment of the present invention obtains the structural block diagram of module；
Fig. 4 indicates that the second of the embodiment of the present invention obtains the structural block diagram of module；
Fig. 5 indicates the structural block diagram of the determining module of the embodiment of the present invention；
Fig. 6 indicates the communication link schematic diagram at road cross；
Fig. 7 indicates that driving trace matches schematic diagram with communication link.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
Embodiment one
One aspect according to an embodiment of the present invention provides a kind of method for extracting road cross traffic limitation, the party
Method exists firstly, obtaining multiple vehicles in real time in the driving information of a road cross and according to the driving information acquisition vehicle
The driving trace of the road cross；Then, a plurality of passage of road cross in the case where no traffic limitation is obtained
Link；Again, the driving trace by the vehicle in the road cross is matched with the communication link, obtains the road
The traffic conditions at road crossing；Finally, obtaining the traffic limitation letter of the road cross according to the traffic conditions of the road cross
Breath.
As shown in Figure 1, this method comprises:
Step S11, multiple vehicles are obtained in real time to obtain in the driving information of a road cross and according to the driving information
Driving trace of the vehicle in the road cross.
When user uses online navigation software, newest driving information can be stayed on the server, therefore can be by making
Vehicle is obtained in the driving information of a road cross with navigation software, or by cooperating with taxi company, is obtained in real time
The driving information hired a car is taken out, and these information are uniformly subjected to classified and stored by collection system.
Specifically, step S11 includes:
Obtain in real time multiple vehicles the driving information of a road cross and according to different user informations carry out classification deposit
Storage, wherein the driving information of the vehicle includes the user information of vehicle, the tracing point of different moments and driving direction；
Sequentially in time, the tracing point and traveling according to vehicle corresponding to each user information in different moments
Direction obtains vehicle corresponding to each user information in the driving trace of the road cross.
Wherein, vehicle corresponding to each user information in different moments there are corresponding tracing point and driving direction,
And tracing point includes x coordinate value and the y-coordinate value on map, driving direction is the direction of headstock.By each of vehicle
Tracing point arranges sequentially in time, and is concatenated tracing point according to driving direction and can obtain vehicle in road cross
Driving trace.
Step S13, a plurality of communication link of road cross in the case where no traffic limitation is obtained.
Each road cross there are it is multiple enter roads and be driven out to road, thus pass through from the road cross each
Communication link then includes one entering road and being driven out to road.
Specifically, step S13 includes:
Obtain LinkID, direction vector and the current direction at the ID and the road cross of the road cross；
The entrance road of the road cross is obtained according to the LinkID, direction vector and passage direction and is driven out to
Road；
According to it is described enter road and be driven out to road, obtain in the case that the road cross is in no traffic limitation
A plurality of communication link, wherein each communication link is driven out to road into road and one including one.
For example, as shown in fig. 6, if the ID of the road cross obtained is C1, and a plurality of road at the road cross
LinkID be followed successively by R1, R2, R3, R4, R5, R6, R7 and R8.According to the direction vector of R1~R8 and current direction it can be concluded that
R2, R4, R6, R8 are to enter road, and R1, R3, R5, R7 are to be driven out to road, and then obtain outlet road C1 in no traffic limitation
In the case where communication link it is as follows:
Enter crossing by R2, in the case where no traffic limitation, crossing can be exited from R1, R3, R5, R7；
Enter crossing by R4, in the case where no traffic limitation, crossing can be exited from R1, R3, R5, R7；
Enter crossing by R6, in the case where no traffic limitation, crossing can be exited from R1, R3, R5, R7；
Enter crossing by R8, in the case where no traffic limitation, crossing can be exited from R1, R3, R5, R7.
And then it can obtain, communication link list as shown in Table 1:
1 communication link list of table
| Crossing | Into road | It is driven out to road |
| C1 | R2 | R1 |
| C1 | R2 | R3 |
| C1 | R2 | R5 |
| C1 | R2 | R7 |
| C1 | R4 | R1 |
| C1 | R4 | R3 |
| C1 | R4 | R5 |
| C1 | R4 | R7 |
| C1 | R6 | R1 |
| C1 | R6 | R3 |
| C1 | R6 | R5 |
| C1 | R6 | R7 |
| C1 | R8 | R1 |
| C1 | R8 | R3 |
| C1 | R8 | R5 |
| C1 | R8 | R7 |
Step S15, the driving trace by the vehicle in the road cross is matched with the communication link, is obtained
The traffic conditions of the road cross.
Wherein, the driving trace by the vehicle in the road cross is matched with the communication link, tool
Body includes:
It is any to judge that the vehicle is located on the driving trace of the road cross with the presence or absence of at least two tracing points
Communication link enters road and is driven out on road；
If it exists, and be located at the inlet channel road tracing point driving direction and the direction vector into road
Identical, the driving direction positioned at the tracing point being driven out on road is identical as the direction vector for being driven out to road, then described
Vehicle matches in the driving trace of the road cross with the communication link；
If it does not exist, then the vehicle is mismatched in the driving trace of the road cross and the communication link.
For example, as shown in fig. 7, if obtaining the driving trace of vehicle Car1, Car2 and Car3 in step s 11,
During then the communication link at the road cross that the driving trace of Car1, Car2 and Car3 and ID are C1 carries out matched,
If the traveling side for the tracing point for being respectively present multiple tracing points on R4 and R7 on the driving trace of Car1, and being located on R4
To identical as the direction vector of R4, the driving direction of the tracing point on R7 and the direction vector of R7 are identical, i.e. the rail of Car1
Mark be always validation value 180 (direction running is spent in positive and negative 35), then driving trace of the Car1 road cross C1 at and road R4 and
R7 matches.The track that Car2 can similarly be obtained is along 270 (positive and negative 35) degree direction running, the tracks of Car3 at crossing
It is that (direction running is spent in positive and negative 35), then the driving trace of Car2 is matched with road R4 and R1, the row of Car3 along 90 at crossing
Track is sailed to match with road R4 and R5.
Therefore, the match condition of driving trace and communication link as shown in Table 2 can be obtained:
Such as the match condition of table 2 driving trace and communication link
| License number | Crossing ID | Into road | Exit road |
| Car1 | C1 | R4 | R7 |
| Car2 | C1 | R4 | R1 |
| Car3 | C1 | R4 | R5 |
Step S17, according to the traffic conditions of the road cross, the traffic restricted information of the road cross is obtained.
Wherein, step S17 is specifically included:
The vehicle is calculated the case where the driving trace of the road cross matches with the communication link,
And the communication link of impassabitity is obtained according to calculated result；
Communication link according to impassabitity generates traffic restricted information.
Wherein, the driving information that a vehicle road cross in office for magnanimity is acquired in the method for the embodiment of the present invention, because
For each communication link, there are the driving traces of multiple vehicles to match for this.Avoid the single car due to random acquisition
Irregular traveling and the traffic restricted information that causes to make mistake.
Simply, for example, can get and the traveling rail of Car1, Car2 and Car3 at road cross C1 from Fig. 7
The communication link that mark matches.In summary Tables 1 and 2, then can from which further follow that at road cross C1 from R4 enter but
Failed matched communication link, i.e., enter crossing by R4, in the case where no traffic limitation, from R3 exit crossing not at
Function matching.Therefore it can be concluded that a traffic restricted information of road cross C1 are as follows: the road of R4 not can enter on the road of R3.
It can also be calculated between the road of R2, R6, R8 and R1, R3, R5, R7 not using above method
Situation about can pass through, to obtain the traffic restricted information in entire road cross C1.
Optionally, may also include that after step S17
Step S19, the traffic restricted information that the id information of lookup and the road cross matches in the database, and according to
The traffic restricted information in the database is updated according to the traffic restricted information of the road cross of acquisition.
In conclusion the method for the extraction road cross traffic limitation of the embodiment of the present invention, solves the friendship of road cross
The difficult problem of logical restricted information acquisition, helps user to find the traffic restricted information variation at crossing in time, improves the real-time of data
Property, collecting efficiency and accuracy, to guarantee that user's route planning when road cross is using navigation is consistent with scene, is
User provides safer and quick crossing trip, reduces crossing generation violating the regulations.
Embodiment two
Other side according to an embodiment of the present invention provides a kind of device for extracting road cross traffic limitation, such as
The device 200 shown in Fig. 2 includes:
First obtains module 201, for obtaining multiple vehicles in real time in the driving information of a road cross and according to described
Driving information obtains the vehicle in the driving trace of the road cross；
Second obtains module 202, for obtaining a plurality of passage of road cross in the case where no traffic limitation
Link；
Matching module 203, for carrying out the vehicle in the driving trace of the road cross and the communication link
Matching, obtains the traffic conditions of the road cross；
Determining module 204 obtains the traffic limitation of the road cross for the traffic conditions according to the road cross
Information.
Optionally, described device further include:
Update module 205, for searching the traffic limitation to match with the id information of the road cross in the database
Information, and the traffic restricted information of the road cross according to acquisition updates the traffic restricted information in the database.
Optionally, as shown in figure 3, the first acquisition module 201 includes:
Storage unit 2011, for obtaining multiple vehicles in real time in the driving information of a road cross and according to different use
Family information carries out classification storage, wherein the driving information of the vehicle includes the tracing point of the user information of vehicle, different moments
And driving direction；
First acquisition unit 2012 is used for sequentially in time, according to vehicle corresponding to each user information not
Tracing point and driving direction when in the same time obtain vehicle corresponding to each user information in the traveling of the road cross
Track.
Optionally, as shown in figure 4, the second acquisition module 202 includes:
Second acquisition unit 2021, the LinkID at ID and the road cross for obtaining the road cross,
Direction vector and current direction；
Third acquiring unit 2022, for obtaining the Road according to the LinkID, direction vector and current direction
Mouthful enter and road and be driven out to road；
4th acquiring unit 2023, for according to it is described enter road and be driven out to road, obtain the road cross and be in
There is no a plurality of communication link in the case where traffic limitation, wherein each communication link is sailed including one into road and one
Road out.
Optionally, the matching module 203 is specifically used for:
It is any to judge that the vehicle is located on the driving trace of the road cross with the presence or absence of at least two tracing points
Communication link enters road and is driven out on road；
If it exists, and be located at the inlet channel road tracing point driving direction and the direction vector into road
Identical, the driving direction positioned at the tracing point being driven out on road is identical as the direction vector for being driven out to road, then described
Vehicle matches in the driving trace of the road cross with the communication link；
If it does not exist, then the vehicle is mismatched in the driving trace of the road cross and the communication link.
Optionally, as shown in figure 5, the determining module 204 includes:
Computing unit 2041, for by the vehicle in the road cross driving trace and the communication link phase
With the case where calculated, and according to calculated result obtain impassabitity communication link；
Generation unit 2042 generates traffic restricted information for the communication link according to impassabitity.
Above-described is the preferred embodiment of the present invention, it should be pointed out that the ordinary person of the art is come
It says, can also make several improvements and retouch under the premise of not departing from principle of the present invention, these improvements and modifications also exist
In protection scope of the present invention.
Claims (8)
1. a kind of method for extracting road cross traffic limitation characterized by comprising
Multiple vehicles are obtained in real time obtains the vehicle in institute in the driving information of a road cross and according to the driving information
State the driving trace of road cross；
Obtain a plurality of communication link of road cross in the case where no traffic limitation；
Driving trace by the vehicle in the road cross is matched with the communication link, obtains the road cross
Traffic conditions；
According to the traffic conditions of the road cross, the traffic restricted information of the road cross is obtained；
The a plurality of communication link that the road cross is obtained in the case where no traffic limitation, specifically includes:
Obtain sequence number LinkID, direction vector and the passage of the road at the ID and the road cross of the road cross
Direction；
The entrance road of the road cross is obtained according to the LinkID, direction vector and passage direction and is driven out to road；
According to it is described enter road and be driven out to road, obtain the road cross be in it is a plurality of in the case where no traffic limitation
Communication link, wherein each communication link is driven out to road into road and one including one；
The traffic conditions according to the road cross, obtain the traffic restricted information of the road cross, specifically include:
The vehicle is calculated the case where the driving trace of the road cross matches with the communication link, and root
The communication link of impassabitity is obtained according to calculated result；
Communication link according to impassabitity generates traffic restricted information.
2. the method as described in claim 1, which is characterized in that described after obtaining the road cross traffic restricted information
Method further include:
The traffic restricted information to match with the sequence number id information of the road cross is searched in the database, and according to acquisition
The traffic restricted information of the road cross update the traffic restricted information in the database.
3. the method as described in claim 1, which is characterized in that described to obtain multiple vehicles in real time in the traveling of a road cross
Information simultaneously obtains the vehicle in the driving trace of the road cross according to the driving information, specifically includes:
Multiple vehicles are obtained in real time carries out classification storage in the driving information of a road cross and according to different user informations,
In, the driving information includes the user information of vehicle, the tracing point of different moments and driving direction；
Sequentially in time, the tracing point according to vehicle corresponding to each user information in different moments and traveling side
To obtaining vehicle corresponding to each user information in the driving trace of the road cross.
4. the method as described in claim 1, which is characterized in that it is described by the vehicle the road cross driving trace
It is matched, is specifically included with the communication link:
Judge that the vehicle is located at any passage with the presence or absence of at least two tracing points on the driving trace of the road cross
Link enters road and is driven out on road；
If it exists, the driving direction and the direction vector phase into road of the tracing point and positioned at the inlet channel road
Together, identical as the direction vector for being driven out to road positioned at the driving direction of the tracing point being driven out on road, then the vehicle
Match in the driving trace of the road cross with the communication link；
If it does not exist, then the vehicle is mismatched in the driving trace of the road cross and the communication link.
5. a kind of device for extracting road cross traffic limitation characterized by comprising
First obtains module, for obtaining multiple vehicles in real time in the driving information of a road cross and according to the driving information
The vehicle is obtained in the driving trace of the road cross；
Second obtains module, for obtaining a plurality of communication link of road cross in the case where no traffic limitation；
Matching module is matched with the communication link for the driving trace by the vehicle in the road cross, is obtained
Obtain the traffic conditions of the road cross；
Determining module obtains the traffic restricted information of the road cross for the traffic conditions according to the road cross；
Described second, which obtains module, includes:
Second acquisition unit, the sequence number of the road at ID and the road cross for obtaining the road cross
LinkID, direction vector and current direction；
Third acquiring unit, for obtaining the entrance of the road cross according to the LinkID, direction vector and current direction
Road and it is driven out to road；
4th acquiring unit, for according to it is described enter road and be driven out to road, obtain the road cross and be in no traffic
A plurality of communication link in the case where limitation, wherein each communication link is driven out to road into road and one including one；
The determining module includes:
Computing unit, for by the vehicle the road cross driving trace and the communication link match the case where
It is calculated, and obtains the communication link of impassabitity according to calculated result；
Generation unit generates traffic restricted information for the communication link according to impassabitity.
6. device as claimed in claim 5, which is characterized in that described device further include:
Update module is believed for searching the traffic limitation to match with the sequence number id information of the road cross in the database
Breath, and the traffic restricted information of the road cross according to acquisition updates the traffic restricted information in the database.
7. device as claimed in claim 5, which is characterized in that described first, which obtains module, includes:
Storage unit, for obtain in real time multiple vehicles the driving information of a road cross and according to different user informations into
Row classification storage, wherein the driving information includes the user information of vehicle, the tracing point of different moments and driving direction；
First acquisition unit is used for sequentially in time, according to vehicle corresponding to each user information in different moments
Tracing point and driving direction, obtain vehicle corresponding to each user information in the driving trace of the road cross.
8. device as claimed in claim 5, which is characterized in that the matching module is specifically used for:
Judge that the vehicle is located at any passage with the presence or absence of at least two tracing points on the driving trace of the road cross
Link enters road and is driven out on road；
If it exists, the driving direction and the direction vector phase into road of the tracing point and positioned at the inlet channel road
Together, identical as the direction vector for being driven out to road positioned at the driving direction of the tracing point being driven out on road, then the vehicle
Match in the driving trace of the road cross with the communication link；
If it does not exist, then the vehicle is mismatched in the driving trace of the road cross and the communication link.
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| CN110455302B (en) * | 2018-05-08 | 2023-10-20 | 奥迪股份公司 | Navigation system control method, device, computer equipment and storage medium |
| JP2021503106A (en) * | 2018-10-25 | 2021-02-04 | ベイジン ディディ インフィニティ テクノロジー アンド ディベロップメント カンパニー リミティッド | Methods and systems for determining the presence or absence of target road equipment at intersections |
| CN111383446B (en) * | 2018-12-28 | 2022-09-20 | 西安四维图新信息技术有限公司 | Method and equipment for making electronic map road information |
| CN111899505B (en) * | 2019-05-06 | 2022-01-25 | 北京四维图新科技股份有限公司 | Detection method and device for traffic restriction removal |
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| CN111739323B (en) * | 2020-03-19 | 2022-08-12 | 腾讯科技（深圳）有限公司 | Method and device for acquiring intersection information |
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