CN103903465A - Method and system for releasing reason for road congestion in real time - Google Patents
Method and system for releasing reason for road congestion in real time Download PDFInfo
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Abstract
The invention discloses a method and system for releasing the reason for road congestion in real time. According to the method and system for releasing the reason for the road congestion in real time, a vehicle is tracked continuously through the video tracking technique so that the traffic condition of a current roadway can be obtained in real time, the whole road section within the video tracking range can be monitored through the video tracking technique, the condition of the whole road section can be reflected, and once the congestion appears, an image of the area where the congestion appears can be immediately sent to a vehicle-mounted terminal, and then a driver can learn the reason for the congestion appearing on the front roadway and the degree of the congestion according to image information. According to the method and system for releasing the reason for the road congestion in real time, the abnormal parking situation on the roadway can also be monitored accurately in real time, and once a vehicle is parked abnormally, an image of the area where the vehicle is parked abnormally is sent to the vehicle-mounted terminal no matter whether congestion is caused.
Description
Technical field
The present invention relates to ITS Information and issue field, specifically a kind of congestion in road reason real-time release method and system.
Background technology
Along with Urban traffic demand rapid growth, road traffic is day by day busy.Because motor vehicle flow is large, illegal activities, traffic hazard, vehicle trouble, the road traffic congestion that reason causes such as freeze happens occasionally.For this reason, vehicle supervision department takes the information of the current traffic of the whole bag of tricks collection, analysis, processing, and result is issued to traffic participant by three kinds of colors of red, yellow, and green, in the time that traffic participant sees that by trackside message panel or car-mounted terminal road ahead traffic status is redness, can only illustrate that road ahead seriously blocks up, be actually seriously to what degree, to last long, be blocking up of causing of what reason, traffic participant cannot be known also just to determine whether select other routes to go to destination.
Existing patent documentation CN102930735A discloses a kind of city real-time traffic information dissemination method based on traffic video, cardinal principle is: a kind of city real-time traffic information dissemination method based on traffic video, the method comprises the step of following order: velocity information is uploaded in real time background server by the Floating Car that (1) detects each section of road network, and all control points traffic dynamic information is around uploaded in real time background server by traffic video monitoring equipment; (2) background server, according to the information acquisition state of Floating Car sample distribution and traffic video monitoring equipment, is determined real-time traffic states extraction result, in conjunction with transport information, divides traffic information and issues rank; (3) extract other FCD of each issue stage and video traffic information simultaneously, based on video mode, the public is issued.
In this technical scheme, there is following problem: 1, adopt Floating Car investigation method, it obtains data can not react the current real-time status of road network; 2, video check point adopts section detection mode can not reflect the omnidistance situation in section, can only lean on reckoning; 3, the information delay of issuing, generally needs 5 minutes; 4, can not automatically carry out image issue to the reason of blocking up of system-wide section.In sum, technique scheme poor accuracy, time delay is long.
Summary of the invention
Technical matters to be solved by this invention is of the prior art, can not issue the reason of congestion in road, non-normal stop real-time, fast automaticly to mobile terminal, thereby a kind of congestion in road reason real-time release method and system are provided.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
The invention provides a kind of congestion in road reason real-time release method, comprise the steps:
S1: each vehicle entering within the scope of video tracking is carried out to Continuous Tracking;
S2: obtain respectively First Speed and the second speed in second moment of each car in the first moment;
S3: judge whether described First Speed equates with described second speed, if enter step S4, otherwise enter step S5;
S4: whether the difference that judges described First Speed and described second speed is more than or equal to velocity contrast threshold value, if enter step S6, otherwise returns to step S1;
S5: judge whether described First Speed and described second speed are all less than or equal to threshold speed, if enter step S6, otherwise return to step S1;
S6: determine and occur blocking up, obtain congestion regions image and be sent to car-mounted terminal, described car-mounted terminal obtains according to image the reason of blocking up.
Described congestion in road reason real-time release method, also comprises the steps: between described step S1 and step S2
A: judge whether the vehicle within the scope of video tracking is halted state, enters if not step S2, is to enter step B;
B: whether the vehicle that judges the vehicle heading dead ahead next-door neighbour in halted state is halted state, if return to step S1, otherwise enters step C;
C: obtain exception parking area image and be sent to car-mounted terminal.
Described congestion in road reason real-time release method, in described step B: the distance between stop vehicle dead ahead next-door neighbour's vehicle and stop vehicle is no more than distance threshold L rice, wherein L≤20.
Described congestion in road reason real-time release method, in described step C, when stop vehicle dead ahead is without next-door neighbour's stop vehicle, and time of this vehicle stop while exceeding again judgment threshold T, obtain exception parking area image and be sent to car-mounted terminal.
Described congestion in road reason real-time release method, described judgment threshold T was more than or equal to for 3 seconds.
The present invention also provides a kind of congestion in road reason real-time publishing system, comprising:
Car-mounted terminal, is arranged on the vehicle that needs to issue the reason of blocking up;
Video monitoring unit, carries out Continuous Tracking to each vehicle entering within the scope of video tracking;
Speed acquiring unit, obtains each car within the scope of video tracking First Speed and second speed in the second moment in the first moment;
The first judging unit, judges whether described First Speed equates with described second speed;
The second judging unit, when described First Speed and described second speed are when unequal, judges whether the difference of described First Speed and described second speed is more than or equal to velocity contrast threshold value;
The 3rd judging unit, in the time that described First Speed equates with described second speed, judges whether described First Speed and described second speed are all less than or equal to threshold speed;
Congestion information transmission unit, in the time that the difference of described First Speed and described second speed is more than or equal to described velocity contrast threshold value or described First Speed and described second speed and is all less than or equal to described threshold speed, determine and occur blocking up, obtain congestion regions image and be sent to car-mounted terminal, described car-mounted terminal obtains according to image the reason of blocking up.
Described congestion in road reason real-time publishing system, also comprises:
Vehicle-state judging unit, for judging whether the vehicle within the scope of video tracking is halted state;
Exception parking judging unit, at described vehicle-state judging unit, judges while having vehicle to be halted state, judges that having or not next-door neighbour's vehicle in the vehicle heading dead ahead of halted state is halted state;
Exception parking alarm unit, for the vehicle heading dead ahead in halted state without next-door neighbour stop vehicle time, exception parking area image is sent to car-mounted terminal.
Described congestion in road reason real-time publishing system, in described exception parking judging unit, the distance between stop vehicle dead ahead next-door neighbour's vehicle and stop vehicle is no more than distance threshold L rice, wherein L≤20.
Described congestion in road reason real-time publishing system, in described exception parking alarm unit, sets when stop vehicle dead ahead is without next-door neighbour's stop vehicle, and time of this vehicle stop while exceeding judgment threshold T, and exception parking area image is sent to car-mounted terminal.
Described congestion in road reason real-time publishing system, in described exception parking alarm unit, sets described judgment threshold T and was more than or equal to for 3 seconds.
Technique scheme of the present invention has the following advantages compared to existing technology:
(1) congestion in road reason real-time release method and system of the present invention, adopt video tracking technology to carry out Continuous Tracking to vehicle, can obtain in real time the traffic on current road surface, and video tracking technology can be monitored the whole section within the scope of video tracking, can reflect the omnidistance situation in section, once and occur blocking up, can immediately the image of congestion regions be sent to car-mounted terminal.Driver just can be known block up reason and the degree of blocking up of road ahead immediately according to image information.
(2) congestion in road reason real-time release method and system of the present invention, can accurately monitor in real time the exception parking situation on road surface, once there is exception parking in vehicle, whether no matter causing blocks up can both be sent to car-mounted terminal by the image of exception parking vehicle region, and systemic-function is abundanter.
(3) congestion in road reason real-time release method and system of the present invention, judging that vehicle whether when exception parking, set judgment threshold T.Occur by the situation that judgment threshold can avoid vehicle to be judged as exception parking once stopping is set, further improved the accuracy of system.
Accompanying drawing explanation
For content of the present invention is more likely to be clearly understood, below in conjunction with accompanying drawing, the present invention is further detailed explanation, wherein,
Fig. 1 is one embodiment of the invention congestion in road reason of the present invention real-time release method flow diagram;
Fig. 2 is congestion in road reason real-time release method flow diagram of the present invention described in one embodiment of the invention;
Fig. 3 is the theory diagram of congestion in road reason real-time publishing system of the present invention described in one embodiment of the invention;
Fig. 4 is the theory diagram of congestion in road reason real-time publishing system of the present invention described in one embodiment of the invention.
Embodiment
embodiment 1
The present embodiment provides a kind of congestion in road reason real-time release method, as shown in Figure 1, comprises the steps:
S1: each vehicle entering within the scope of video tracking is carried out to Continuous Tracking.
S2: obtain respectively First Speed and the second speed in second moment of each car in the first moment.
S3: judge whether described First Speed equates with described second speed, if enter step S4, otherwise enter step S5.
S4: whether the difference that judges described First Speed and described second speed is more than or equal to velocity contrast threshold value, if enter step S6, otherwise returns to step S1.Wherein said velocity contrast threshold value is chosen flexibly according to road position and vehicle flowrate at that time.For example can select velocity contrast threshold value=(First Speed-second speed) * 0.5.
S5: judge whether described First Speed and described second speed are all less than or equal to threshold speed, if enter step S6, otherwise return to step S1.Wherein said threshold speed is chosen flexibly according to road position and vehicle flowrate at that time.For example can select 50% or 30% etc. of this section speed limit.For example, on general through street, the speed limit of vehicle is 100km/ hour, and the threshold speed that can arrange on this section is 30km/ hour.
S6: determine and occur blocking up, obtain congestion regions image and be sent to car-mounted terminal, described car-mounted terminal obtains according to image the reason of blocking up.
In the present embodiment, adopt video tracking technology to carry out Continuous Tracking to vehicle, can obtain in real time the traffic on current road surface, and video tracking technology can be monitored the whole section within the scope of video tracking, can reflect the omnidistance situation in section, once and occur blocking up, can immediately the image of congestion regions be sent to car-mounted terminal.Driver just can be known block up reason and the degree of blocking up of road ahead immediately according to image information.
In the present embodiment, adopting video tracking technology to carry out Continuous Tracking to the vehicle entering within the scope of video tracking, is means conventional in prior art.As a kind of implementation method, video tracking picture can be regarded a plane coordinate system as, and its transverse axis is x axle, and the longitudinal axis is y axle.Each location point in this video pictures, can determine its position.And enter each car within the scope of video tracking, and after Continuous Tracking, can be considered as a rectangle frame, the corresponding x in center of rectangle frame, y value can be used as the foundation of determining its position in video pictures.For different vehicle is distinguished, can also one numbering be set for each car.For example, numbering 001,002,003 ...Therefore, each moment, the particular location of the vehicle that can both accurately learn each numbering in video pictures.
In video tracking technology, the vehicle location in any two moment can be obtained, then according to the mistiming between two moment, car speed can be obtained immediately.Certainly the velocity information of utilizing video tracking detection technique to obtain vehicle is also ripe means of the prior art, no longer describes in detail at this.
Mistiming between the first moment and the second moment in the present embodiment can be set flexibly according to actual road conditions.Mistiming, the shorter result obtaining was sensitiveer, was 1s such as setting two mistimings between the moment, and 2s etc., also can be set to 1 minute.In addition, in the present embodiment, said the first moment and the second moment are the concepts of a relative time.For example, take the mistimings of 2 seconds as benchmark, in the process continuous to vehicle, just obtain the speed of a vehicle every two seconds so, the initial time of each time period was exactly the first moment, and the end time of each time period was for the second moment.
Ultimate principle in technique scheme is:
If the travel speed of vehicle at short notice just from fast to slow, it is Reduced Speed Now, and the speed reducing has exceeded again velocity contrast threshold value, can think and necessarily occur that in this region some unexpected time causes vehicle speed retarding, therefore can think to have occurred to block up.
And if the speed of vehicle, all the time all lower than threshold speed, can illustrate and occur to block up in a period of time section.
As long as judgement has occurred to block up, the image that obtains congestion regions is sent to car-mounted terminal.
Preferably, further, as shown in Figure 2, between described step S1 and described step S2, also comprise the steps:
A: judge whether the vehicle within the scope of video tracking is halted state, enters if not step S2, is to enter step B;
B: whether the vehicle that judges the vehicle heading dead ahead next-door neighbour in halted state is halted state, if return to step S1, otherwise enters step C;
C: obtain exception parking area image and be sent to car-mounted terminal.
Adopt video tracking technology, when the position of a certain vehicle in two continuous frames or several frame data does not all change, can assert that this vehicle is in halted state.Utilize Continuous Tracking technology, real-time monitor the vehicle entering within the scope of video tracking and be and normally travel or in halted state.When vehicle is during in halted state, judge that immediately whether the vehicle in vehicle dead ahead is in halted state, if the dead ahead of vehicle next-door neighbour's vehicle does not have halted state, illustrate that this vehicle is exception parking, obtain exception parking area image and be sent to car-mounted terminal.
Preferably, in described step B: the distance between stop vehicle dead ahead next-door neighbour's vehicle and stop vehicle is no more than distance threshold L rice, wherein L≤20.Described distance threshold can be 1 meter, 3 meters, and 5 meters, 10 meters, 20 meters etc.That is to say if having vehicle in halted state in stop vehicle front and stop vehicle next-door neighbour's position, illustrate that this vehicle does not belong to exception parking.This distance threshold capable of dynamic is adjusted, and the selection of occurrence is more low better with rate of false alarm.
Further, set alarm threshold value T, when stop vehicle dead ahead, next-door neighbour's vehicle is not halted state, and time of this vehicle stop while exceeding described judgment threshold T, obtains exception parking area image and is sent to car-mounted terminal.Described judgment threshold T was more than or equal to for 3 seconds, can select 5 seconds, 10 seconds etc.Occur by the situation that judgment threshold can avoid vehicle to be judged as exception parking once stopping is set, further improved the accuracy of system.Therefore, if T was 5 seconds, in the time having exception parking on runway, system can be sent to car-mounted terminal by image within 5 seconds, had greatly shortened the time that notes abnormalities and stop, and had improved quick-reaction capability (QRC) and road efficiency.
embodiment 2
The present embodiment provides a kind of congestion in road reason real-time publishing system, as shown in Figure 3, comprising:
Car-mounted terminal, arranges and needs to issue on the vehicle of the reason of blocking up.
Speed acquiring unit, obtains each car within the scope of video tracking First Speed and second speed in the second moment in the first moment.
The first judging unit, judges whether described First Speed equates with described second speed.
The second judging unit, when described First Speed and described second speed are when unequal, judges whether the difference of described First Speed and described second speed is more than or equal to velocity contrast threshold value.Wherein said velocity contrast threshold value is chosen flexibly according to road position and vehicle flowrate at that time.For example can select velocity contrast threshold value=(First Speed-second speed) * 0.5.
The 3rd judging unit, in the time that described First Speed equates with described second speed, judges whether described First Speed and described second speed are all less than or equal to threshold speed.Wherein said threshold speed is chosen flexibly according to road position and vehicle flowrate at that time.For example can select 50% or 30% etc. of this section speed limit.For example, on general through street, the speed limit of vehicle is 100km/ hour, and the threshold speed that can arrange on this section is 30km/ hour.
Congestion information transmission unit, in the time that the difference of described First Speed and described second speed is more than or equal to described velocity contrast threshold value or described First Speed and described second speed and is all less than or equal to described threshold speed, determine and occur blocking up, obtain congestion regions image and be sent to car-mounted terminal, described car-mounted terminal obtains according to image the reason of blocking up.
In the present embodiment, adopt video tracking technology to carry out Continuous Tracking to vehicle, can obtain in real time the traffic on current road surface, and video tracking technology can be monitored the whole section within the scope of video tracking, can reflect the omnidistance situation in section, once and occur blocking up, can immediately the image of congestion regions be sent to car-mounted terminal.Driver just can be known block up reason and the degree of blocking up of road ahead immediately according to image information.
In the present embodiment, adopting video tracking technology to carry out Continuous Tracking to the vehicle entering within the scope of video tracking, is means conventional in prior art.As a kind of implementation method, video tracking picture can be regarded a plane coordinate system as, and its transverse axis is x axle, and the longitudinal axis is y axle.Each location point in this video pictures, can determine its position.And enter each car within the scope of video tracking, and after Continuous Tracking, can be considered as a rectangle frame, the corresponding x in center of rectangle frame, y value can be used as the foundation of determining its position in video pictures.For different vehicle is distinguished, can also one numbering be set for each car.For example, numbering 001,002,003 ...Therefore, each moment, the particular location of the vehicle that can both accurately learn each numbering in video pictures.
In video tracking technology, the vehicle location in any two moment can be obtained, then according to the mistiming between two moment, car speed can be obtained immediately.Certainly the velocity information of utilizing video tracking detection technique to obtain vehicle is also ripe means of the prior art, no longer describes in detail at this.
Mistiming between the first moment and the second moment in the present embodiment can be set flexibly according to actual road conditions.Mistiming, the shorter result obtaining was sensitiveer, was 1s such as setting two mistimings between the moment, and 2s etc., also can be set to 1 minute.In addition, in the present embodiment, said the first moment and the second moment are the concepts of a relative time.For example, take the mistimings of 2 seconds as benchmark, in the process continuous to vehicle, just obtain the speed of a vehicle every two seconds so, the initial time of each time period was exactly the first moment, and the end time of each time period was for the second moment.
Ultimate principle in technique scheme is:
If the travel speed of vehicle at short notice just from fast to slow, it is Reduced Speed Now, and the speed reducing has exceeded again velocity contrast threshold value, can think and necessarily occur that in this region some unexpected time causes vehicle speed retarding, therefore can think to have occurred to block up.
And if the speed of vehicle, all the time all lower than threshold speed, can illustrate and occur to block up in a period of time section.
As long as judgement has occurred to block up, the image that obtains congestion regions is sent to car-mounted terminal.
Preferably, further, as shown in Figure 4, also comprise:
Vehicle-state judging unit, for judging whether the vehicle within the scope of video tracking is halted state;
Exception parking judging unit, judges whether the vehicle of the vehicle heading dead ahead next-door neighbour in halted state is halted state for judging at described vehicle-state judging unit while having vehicle to be halted state;
Exception parking alarm unit is, while being not halted state, exception parking area image is sent to car-mounted terminal for the vehicle of the vehicle heading dead ahead next-door neighbour in halted state.
Adopt video tracking technology, when the position of a certain vehicle in two continuous frames or several frame data does not all change, can assert that this vehicle is in halted state.Utilize Continuous Tracking technology, real-time monitor the vehicle entering within the scope of video tracking and be and normally travel or in halted state.When vehicle is during in halted state, judge that immediately whether the vehicle in vehicle dead ahead is in halted state, if the dead ahead of vehicle next-door neighbour's vehicle does not have halted state, illustrate that this vehicle is exception parking, obtain exception parking area image and be sent to car-mounted terminal.
Preferably, in described exception parking judging unit, the distance between stop vehicle dead ahead next-door neighbour's vehicle and stop vehicle is no more than distance threshold L rice, wherein L≤20.Described distance threshold can be 1 meter, 3 meters, and 5 meters, 10 meters, 20 meters etc.
Further, in described exception parking alarm unit, set when stop vehicle dead ahead next-door neighbour vehicle be not halted state, and time of this vehicle stop while exceeding judgment threshold T, exception parking area image is sent to car-mounted terminal.Described judgment threshold T was more than or equal to for 3 seconds, can select 5 seconds, 10 seconds etc.Occur by the situation that judgment threshold can avoid vehicle to be judged as exception parking once stopping is set, further improved the accuracy of system.Therefore, if T was 5 seconds, in the time having exception parking on runway, system can be sent to car-mounted terminal by image within 5 seconds, had greatly shortened the time that notes abnormalities and stop, and had improved quick-reaction capability (QRC) and road efficiency.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, completely implement software example or the form in conjunction with the embodiment of software and hardware aspect.And the present invention can adopt the form at one or more upper computer programs of implementing of computer-usable storage medium (including but not limited to magnetic disk memory, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is with reference to describing according to process flow diagram and/or the block scheme of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block scheme and/or square frame and process flow diagram and/or block scheme and/or the combination of square frame.Can provide these computer program instructions to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction that makes to carry out by the processor of computing machine or other programmable data processing device produces the device for realizing the function of specifying at flow process of process flow diagram or multiple flow process and/or square frame of block scheme or multiple square frame.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of specifying in flow process of process flow diagram or multiple flow process and/or square frame of block scheme or multiple square frame.
These computer program instructions also can be loaded in computing machine or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computing machine or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of specifying in flow process of process flow diagram or multiple flow process and/or square frame of block scheme or multiple square frame on computing machine or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the modification of the scope of the invention.
Claims (10)
1. a congestion in road reason real-time release method, is characterized in that, comprises the steps:
S1: each vehicle entering within the scope of video tracking is carried out to Continuous Tracking;
S2: obtain respectively First Speed and the second speed in second moment of each car in the first moment;
S3: judge whether described First Speed equates with described second speed, if enter step S4, otherwise enter step S5;
S4: whether the difference that judges described First Speed and described second speed is more than or equal to velocity contrast threshold value, if enter step S6, otherwise returns to step S1;
S5: judge whether described First Speed and described second speed are all less than or equal to threshold speed, if enter step S6, otherwise return to step S1;
S6: determine and occur blocking up, obtain congestion regions image and be sent to car-mounted terminal, described car-mounted terminal obtains according to image the reason of blocking up.
2. congestion in road reason real-time release method according to claim 1, is characterized in that, between described step S1 and step S2, also comprises the steps:
A: judge whether the vehicle within the scope of video tracking is halted state, enters if not step S2, is to enter step B;
B: whether the vehicle that judges the vehicle heading dead ahead next-door neighbour in halted state is halted state, if return to step S1, otherwise enters step C;
C: obtain exception parking area image and be sent to car-mounted terminal.
3. congestion in road reason real-time release method according to claim 2, is characterized in that, in described step B: the distance between stop vehicle dead ahead next-door neighbour's vehicle and stop vehicle is no more than distance threshold L rice, wherein L≤20.
4. according to the congestion in road reason real-time release method described in claim 2 or 3, it is characterized in that, in described step C, when stop vehicle dead ahead is without next-door neighbour's stop vehicle, and the time of this vehicle stop, while exceeding again judgment threshold T, obtains exception parking area image and is sent to car-mounted terminal.
5. congestion in road reason real-time release method according to claim 4, is characterized in that: described judgment threshold T was more than or equal to for 3 seconds.
6. a congestion in road reason real-time publishing system, is characterized in that, comprising:
Car-mounted terminal, is arranged on the vehicle that needs to issue the reason of blocking up;
Video monitoring unit, carries out Continuous Tracking to each vehicle entering within the scope of video tracking;
Speed acquiring unit, obtains each car within the scope of video tracking First Speed and second speed in the second moment in the first moment;
The first judging unit, judges whether described First Speed equates with described second speed;
The second judging unit, when described First Speed and described second speed are when unequal, judges whether the difference of described First Speed and described second speed is more than or equal to velocity contrast threshold value;
The 3rd judging unit, in the time that described First Speed equates with described second speed, judges whether described First Speed and described second speed are all less than or equal to threshold speed;
Congestion information transmission unit, in the time that the difference of described First Speed and described second speed is more than or equal to described velocity contrast threshold value or described First Speed and described second speed and is all less than or equal to described threshold speed, determine and occur blocking up, obtain congestion regions image and be sent to car-mounted terminal, described car-mounted terminal obtains according to image the reason of blocking up.
7. congestion in road reason real-time publishing system according to claim 6, is characterized in that, also comprises:
Vehicle-state judging unit, for judging whether the vehicle within the scope of video tracking is halted state;
Exception parking judging unit, at described vehicle-state judging unit, judges while having vehicle to be halted state, judges that having or not next-door neighbour's vehicle in the vehicle heading dead ahead of halted state is halted state;
Exception parking alarm unit, for the vehicle heading dead ahead in halted state without next-door neighbour stop vehicle time, exception parking area image is sent to car-mounted terminal.
8. according to congestion in road reason real-time publishing system described in claim 6 or 7, it is characterized in that, in described exception parking judging unit, the distance between stop vehicle dead ahead next-door neighbour's vehicle and stop vehicle is no more than distance threshold L rice, wherein L≤20.
9. according to congestion in road reason real-time publishing system described in claim 7 or 8, it is characterized in that, in described exception parking alarm unit, set when stop vehicle dead ahead is without next-door neighbour's stop vehicle, and the time of this vehicle stop, while exceeding judgment threshold T, is sent to car-mounted terminal by exception parking area image.
10. congestion in road reason real-time publishing system according to claim 9, is characterized in that, in described exception parking alarm unit, sets described judgment threshold T and is more than or equal to for 3 seconds.
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