CN104200648B - A kind of road-section average computing method hourage based on electronic license plate - Google Patents
A kind of road-section average computing method hourage based on electronic license plate Download PDFInfo
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- CN104200648B CN104200648B CN201410415346.8A CN201410415346A CN104200648B CN 104200648 B CN104200648 B CN 104200648B CN 201410415346 A CN201410415346 A CN 201410415346A CN 104200648 B CN104200648 B CN 104200648B
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Abstract
The invention discloses a kind of road-section average computing method hourage based on electronic license plate.Adopt, on vehicle, electronic license plate is installed, in the import and export position of road, electronic license plate reader device is installed, when vehicle is by reader device, reader device reads the electronics number plate of vehicle, and by the electronic license plate of reading, information transmission such as reading time and load position etc. to central server, central server is according to the information of many cars read, and reject hourage obviously than the vehicle sample having larger difference average hourage, COMPREHENSIVE CALCULATING goes out the average hourage of section multiple directions.Compared with the present invention and employing are carried out calculating based on electronic license plate method hourage, there is the clear superiority that cost is low, accuracy is high, and the reading of electronic license plate is not subject to the impact of weather and illumination, abundant solution video mode carries out Car license recognition because of the low problem of the such environmental effects such as weather and illumination Detection accuracy, carries out the calculating of the shortest hourage more accurately.
Description
One, technical field
The present invention relates to intelligent transportation field, particularly a kind of road-section average computing method hourage based on electronic license plate.
Two, background technology
Along with the increase of automobile, urban traffic blocking is on the rise, but the traffic flow distribution of urban road exists imbalance, usually occur that segment path blocks up very much, and another part road traffic is still very unimpeded.Traffic trip person is when selecting row line, due to the jam situation of that road cannot be known, by virtue of experience can only select row line or by navigation selection generic line, if the jam situation of road can be known, know the average hourage in section, just can implement shortest time turn-by-turn navigation.
Road-section average computing method hourage mainly contain two kinds at present, a kind of employing Floating Car computing method, another kind of employing Car license recognition method.Floating Car computing method mainly through installing GPS device on special car, the GPS position information of special car is read by centring system, determine that vehicle runs the time spent in section, Floating Car is adopted to calculate the real-time of hourage relatively good, but because GPS is mounted on bus or taxi, the operation of these vehicles has singularity, especially when bus travels on dedicated bus lanes, it adopts GPS to determine that the hourage in section has limitation, and accuracy is lower.The method that current another kind calculates road-section average hourage installs high-definition camera on section, by capturing car image, image recognition technology is adopted to carry out the number plate identification of vehicle, utilize number plate identification to determine that a same number plate car is in the time of diverse location, then calculates the average hourage in section by many cars.Adopting license plate recognition technology to calculate road-section average hourage is the previous Main Means of order, but Car license recognition needs to set up a large amount of cameras and light compensating lamp on urban road, not only construction cost is high, and Car license recognition is subject to the such environmental effects such as illumination, and accuracy can reduce.
Based on above reason, the present invention adopts and install electronic license plate on vehicle, by installing electronic license plate reader device in the import and export position of road, when vehicle is by reader device, reader device reads the electronics number plate of vehicle, and by the electronic license plate of reading, information transmission such as reading time and load position etc. to central server, central server is according to the information of many cars read, and COMPREHENSIVE CALCULATING goes out the average hourage of section multiple directions.
Three, summary of the invention
The object of the invention is, for adopting floating car technology to have some limitations hourage to calculate road-section average at present, to cause accuracy not high; Adopt and carry out the calculating of road-section average hourage based on the number plate of vehicle recognition technology of video camera and there is the high deficiency of construction cost, a kind of new road-section average computing method hourage are provided.This method can not only accurately calculate hourage on section, can also calculate the delay time at stop of crossing all directions, and the calculating making road-section average hourage more accurately and science.
The object of the invention is to reach like this: the present invention adopts and install electronic license plate on vehicle, in the import and export position of road, electronic license plate reader device is installed, when vehicle is by reader device, reader device reads the electronics number plate of vehicle, and the electronic license plate that will read, the information transmission such as reading time and load position are to central server, central server is according to the information of many cars read, each sample vehicle journeys time and average hourage are compared, reject hourage obviously than the vehicle sample having larger difference average hourage, COMPREHENSIVE CALCULATING goes out the average hourage of section multiple directions.
Electronic license plate reader device is installed in the described import and export position at road, according to non-mandrel roller right-angled intersection be provided with signal and control lamp right-angled intersection two kinds of different situations and install electronic license plate reader devices.
Described central server is according to the information of many cars read, and the average hourage that COMPREHENSIVE CALCULATING goes out section multiple directions is provided with signal control lamp according to crossing, road and does not have signalization control lamp two kinds of different situations to calculate average hourage.
Described installation of installing electronic license plate reader device at non-mandrel roller right-angled intersection, be 4 directions of right-angled intersection entrance respectively reader device is installed, the installation site of reader device antenna is from stop line 10 meters.
Electronic license plate reader device is all installed in described turnover 8 directions being provided with signal control lamp right-angled intersection, the reader device astronomical cycle that enters crossing vehicle will be read from stop line 20 ~ 50 meters of in the installation site of reader device, sail out of the vehicle at crossing, read the reader device astronomical cycle that sails out of crossing vehicle from stop line 10 meters of.
The described right-angled intersection situation according to non-mandrel roller lamp calculates average hourage: be according to calculate in certain hour section correct read electronic license plate vehicle by averaging time in section, when calculating each road-section average hourage, calculated once every 1 minute, and the vehicle selected by calculating is the vehicle by reader device in first 5 minutes of current computing time.
Described according to there being the account form of signal controlled junctions road-section average hourage to be included in the average running time on this section, the average queuing at crossing by mean transit time three part of time, downstream road junction, be divided three classes by the mean transit time of downstream road junction: craspedodrome direction hourage, to turn right direction hourage and the direction hourage of turning left.
The calculating of the average running time on section is the time from outlet reader device installation site, crossing, upstream to this section of distance in downstream road junction entrance reader device installation site; Crossing computing method hourage respectively to craspedodrome, turning right calculates with turning left; No matter calculate the average hourage of road-section average hourage or crossing all directions, it is all the average hourage calculating certain interval section, its computing method are consistent, and before agreement, point is for entering interval section vehicle detection point, and rear point is for sailing out of interval section vehicle detection point:
1), first acquisition current time is sailed out of all vehicle license plate information of the rear some reader device reading in interval section and is passed through the time in first 5 minutes;
2), then, put in the data of reader device reading before entering interval section, to search within the scope of certain hour by vehicle consistent with rear point-like electron license plate number in vehicle database, and using the vehicle that satisfies condition as initial Sample Storehouse, initial sample vehicle number is set as K;
3), each initial sample vehicle was deducted with the time by rear point be designated as t by the time of front point
i, then calculate front arrive rear point initial average hourage:
4) t of each sample vehicle, is compared
ivalue and T
1difference, to judge that this value is whether effective, if
then cancelled from initial Sample Storehouse by this sample vehicle, K value deducts 1; If t
i>2T
1, then cancelled from initial Sample Storehouse by this sample vehicle, K value deducts 1;
5) residue sample vehicle average hourage is calculated:
This hourage is exactly the current average hourage that rear point is put in section in the past.
Described according within the scope of rear some place certain hour by finding out the vehicle consistent with point-like electron license plate number before E in vehicle database, its time range be no more than in the past point to 5 times of times of rear normal vehicle operation time.
Described rejecting hourage is the half Rejection of samples vehicle journeys time being less than average hourage obviously than the vehicle sample having larger difference average hourage, and the sample vehicle journeys time is greater than the vehicle sample of a times of average hourage.
Described electronic license plate is radio frequency identification RFID 2.4G, is communicated with read write line by label antenna; Described electronic license plate reader device is made up of card reader, antenna and main control system, and card reader is RFID2.4G active long-range card reader, and antenna is planar directional antenna, and the corresponding antenna in each track, a main control system can connect multiple card reader simultaneously.
The present invention has following beneficial effect:
1, electronic license plate reader device equipment cost is low, easy for installation, adopts and carries out calculating hourage based on electronic license plate method, and compare and adopt video to carry out Car license recognition and carry out calculating hourage, cost is low, accuracy is high.
2, the reading of electronic license plate is by the impact of weather and illumination, fully solves video mode and carries out Car license recognition because of the low problem of the such environmental effects such as weather and illumination Detection accuracy.
3, the hourage of road-section average hourage and crossing all directions can be calculated simultaneously, the calculating of the shortest hourage can be carried out more accurately.
Four, accompanying drawing explanation
The reading schematic diagram of Fig. 1 electronic license plate.
The connection diagram of Fig. 2 reader device.
Fig. 3 reader device scheme of installation.
Fig. 4 electronic license plate reader device is at the installation site schematic diagram of non-mandrel roller right-angled intersection.
The installation site schematic diagram that Fig. 5 electronic license plate reader device is having signal to control right-angled intersection.
Fig. 6 is that to read the E point in accompanying drawing 5 to hourage of B ＇ point be example, concrete implementation step process flow diagram.
Five, embodiment
The electronic license plate that the present invention adopts is based on RFID2.4G active electronic car plate, can be described as electronic tag again, is communicated by label antenna with read write line.Electronic tag adopts advanced CMOS0.18um low-power integrated circuit, meets that size is little, low-power performance design, and working current is about 12 ~ 18uA, and voltage is 3V.The design of its ultra low power, make Intelligent electronic license plate when not affecting transmitting range, battery life reached more than 4 years.
In order to ensure that electronic license plate can effectively be read, electronic license plate of the present invention is arranged on pilot dial plate side or front screen usually.For each car, electronic license plate can the number-plate number of store car, user profile, purchase ground, the time buying, engine number, vehicle the valid data such as photo.
The reading schematic diagram of electronic license plate as shown in Figure 1.
The electronic license plate reader device that the present invention adopts is formed primarily of following a few part:
Card reader: adopt RFID2.4G active long-range card reader.To the vehicle by road, read its electronic license plate information, and information is sent to main control system.
Antenna: select antenna to be reading signal in order to strengthen card reader, improve the Distance geometry accuracy that card reader reads, the present invention selects planar directional antenna, the corresponding antenna in each track.
Main control system: receive the electronic license plate information that card reader reads, by information transmission to central server, a main control system can connect multiple card reader simultaneously.
The connection layout of electronic license plate reader device as shown in Figure 2.Wherein, antenna is connected with card reader by copper axis cable, and card reader is connected with main control system by Serial Port Line, and main control system is connected with central server by fiber optic network or 3G/LTE wireless network.
Reader device is installed as shown in Figure 3, and this figure is the scheme of installation in 2 tracks, has 1 electronic license plate card reader in figure, and connects 2 antennas, and every root antenna cover 1 track, card reader is connected to main control system by serial ports.
For city road network, road is divided into turnpike road and non-turnpike road, for turnpike road, usually be all provided with signal and control lamp, when vehicle is by crossing, running into red light needs to wait in line, when the magnitude of traffic flow is large, vehicle queue is longer by the time at crossing, forms the delay of long period at crossing place; And for non-major trunk roads, vehicle flowrate is less, crossing non-mandrel roller lamp, vehicle is shorter by the crossing delay time at stop.For this reason, whether the present invention, when calculating road-section average hourage, has signal to control lamp according to crossing, is divided into two kinds of situations to calculate respectively.
1, the account form of non-mandrel roller crossing road-section average hourage
The magnitude of traffic flow of non-mandrel roller intersection is less, and vehicle is less in the crossing stand-by period, and vehicle is basically identical for working time in crossing all directions, therefore, relatively simpler when calculating road-section average hourage.
Electronic license plate reader device of the present invention in the installation site of non-mandrel roller right-angled intersection as shown in Figure 4, installs reader device respectively in 4 directions of right-angled intersection entrance, and the installation site of reader device antenna is from stop line 10 meters.
When calculating road-section average hourage, be actually according to calculate in certain hour section correct read electronic license plate vehicle by averaging time in section, the present invention is when calculating each road-section average hourage, calculated once every 1 minute, and the vehicle selected by calculating is the vehicle by reader device in first 5 minutes of current computing time.
In figure 4, calculate the average hourage from crossing 1 to section, crossing 2, real transform is calculate the road-section average hourage from A point (B point or D point) to A ＇ point.At the reader device of A ＇ point, to often by a car, card reader reads its electronic license plate number, and record this car by the time, and the car information of crossing of this car is sent to central server.Central server is when calculating road-section average hourage, first to inquire in first 5 minutes of current time by A ＇ point and complete the vehicle that correct electronic license plate information reads, then, according to upstream within the scope of A point (B point or D point) place's certain hour by vehicle database in find out the vehicle consistent with A ＇ point-like electron license plate number.This time range, according to the normal vehicle operation Time dependent of A point to A ＇ point, is no more than 5 times from A point to the A ＇ point normal vehicle operation time usually.And using the vehicle that the satisfies condition initial Sample Storehouse as statistics hourage, vehicles all in initial Sample Storehouse are deducted time by A point (B point or D point) with the time by A ＇ point, calculate each sample vehicle from crossing 1 to the hourage at crossing 2, and calculate the mean value of all initial sample vehicle journeys time.When calculating road-section average hourage, because Some vehicles exists parking or other factors on section, cause its hourage obviously than having larger difference average hourage, in order to the accuracy calculated, need this Some vehicles to reject, for this reason, each sample vehicle journeys time and average hourage is needed to compare, if the sample vehicle journeys time is less than average half, then this car exists abnormal hourage, is cancelled by this car from sample vehicle; If the sample vehicle journeys time is greater than one times of average hourage, then this car exists abnormal hourage, is cancelled by this car from sample vehicle.Finally all sample vehicles removing exception vehicle hourage are calculated its mean value, and using this value as crossing 1 to the average hourage at crossing 2.
When calculating road-section average hourage, if section is one-way road, then the road-section average hourage defining forbidden direction is+∞.
There is the account form of signal controlled junctions road-section average hourage
Be made up of three parts hourage based on there being the road-section average of signal controlled junctions: the average running time on section, average queuing at crossing are by time and the mean transit time by downstream road junction.Wherein, queuing time is important time-varying parameter, on accurately estimating that road-section average impact hourage is larger.And downstream road junction is according to road conditions, can be divided into again craspedodrome, three directions of turning right and turn left, the mean transit time in each direction is different.
Because the reader device of electronic license plate is easy for installation, cost is lower, therefore, electronic license plate reader device of the present invention is having the installation site of signal control right-angled intersection as shown in Figure 5, all reader device is installed in right-angled intersection 8 directions, the installation site of reader device enters crossing according to reading vehicle and sails out of crossing and there are differences, because the vehicle entering crossing often exists the state of waiting in line, entering the vehicle of crossing queuing, not travel by normal speed, for this reason, the present invention will read the reader device astronomical cycle that enters crossing vehicle from stop line 20 ~ 50 meters of, mounting distance is depending on crossing congestion situation, and sail out of the vehicle at crossing, there is not waiting status, the present invention will read the reader device astronomical cycle that sails out of crossing vehicle from stop line 10 meters of.
Reader device is by above mounting means, two parts are divided into by asking the average hourage in section, a part is the hourage of vehicle on section and the vehicle hourage at crossing place, wherein comprise vehicle queue's transit time and the vehicle time by crossing the hourage at crossing place, due to crossing place signal lamp can be divided into craspedodrome, three directions of turning right and turn left, therefore, the hourage at crossing place, according to the difference in signal lamp direction, is divided three classes: craspedodrome direction hourage, turn right direction hourage and the direction hourage of turning left.
On section hourage computing method
When calculating hourage on section, its computing method are more consistent with the account form of non-mandrel roller crossing road-section average hourage, just there is reader device in the exit at crossing, upstream, therefore computing time is the time from outlet reader device installation site, crossing, upstream to this section of distance in downstream road junction entrance reader device installation site, in figure 5, the average hourage on this section is the road-section average hourage from E point to B ＇ point.
In figure 5, calculate average hourage the section from E point to B ＇ point, first, its electronic license plate number need be read to each by vehicle at the reader device of B ＇ point, and record this car pass through the time, and the car information of crossing of this car is sent to central server, central server is when calculating road-section average hourage, first to inquire in first 5 minutes of current time by B ＇ point and complete the vehicle that correct electronic license plate information reads, then, according within the scope of upstream E point place certain hour by finding out the vehicle consistent with B ＇ point-like electron license plate number in vehicle database.This time range determines according to the time of vehicle operation of E point to B ＇ point, is usually no more than 5 times from E point to the B ＇ point normal vehicle operation time.And using the vehicle that satisfies condition as initial Sample Storehouse, vehicles all in initial Sample Storehouse are deducted time by E point with the time by B ＇ point, calculate each sample vehicle from E point to the hourage of B ＇ point, and calculate the mean value of all initial sample vehicle journeys time, when calculating road-section average hourage, part vehicle abnormal hourage is needed to reject, for this reason, each sample vehicle journeys time and average hourage is needed to compare, if the sample vehicle journeys time is less than the half of average hourage, then this car exists abnormal hourage, this car is cancelled from sample vehicle storehouse, if the sample vehicle journeys time is greater than one times of average hourage, then this car exists abnormal hourage, this car is cancelled from sample vehicle storehouse, finally, the all sample vehicles removing abnormal hourage are calculated its mean value, and using the average hourage of this value as E point to B ＇ point.
Crossing computing method hourage
When calculating crossing hourage, need situation about arranging according to belisha beacon, respectively to craspedodrome, turning right calculates with turning left, computing method hourage in each direction are more consistent with the account form of non-mandrel roller crossing road-section average hourage, in figure 5, from crossing 1 to the vehicle of crossing 2 direction running, need its average hourage at crossing 2 to calculate to keep straight on hourage, namely from B ＇ point to E ＇ point hourage; Turn right hourage, namely from B ＇ point to C ＇ point hourage; Turn left hourage, namely from B ＇ point to G ＇ point hourage.
In figure 5, calculate and keep straight on hourage from B ＇ point to the crossing of E ＇ point, first, in the card reader of E ＇ point, by vehicle, its electronic license plate number is read to each, and record it and pass through the time, and vehicle is crossed car information and be sent to central server, central server is when calculating road-section average hourage, first inquire in first 5 minutes of current time and complete by E ＇ point the vehicle that correct electronic license plate information reads, then, according to B ＇ point place certain hour scope, (this time range determines according to the time of vehicle operation of B ＇ point to E ＇ point, usually be no more than 5 times from B ＇ point to the E ＇ point normal vehicle operation time) in by finding out the vehicle consistent with E ＇ point-like electron license plate number vehicle database, and using the vehicle that satisfies condition as initial Sample Storehouse, vehicles all in initial Sample Storehouse are deducted time by B ＇ point with the time by E ＇ point, calculate each sample vehicle from B ＇ point to the hourage of E ＇ point, and calculate the mean value of all sample vehicle journeys time, when calculating crossing craspedodrome average hourage, part vehicle abnormal hourage is needed to reject, for this reason, each sample vehicle journeys time and average hourage is needed to compare, if the sample vehicle journeys time is less than the half of average hourage, then this car exists abnormal hourage, this car is cancelled from sample vehicle storehouse, if the sample vehicle journeys time is greater than one times of average hourage, then this car exists abnormal hourage, this car is cancelled from sample vehicle storehouse, finally, the all sample vehicles removing abnormal hourage are calculated its mean value, and this value is kept straight on average hourage as B ＇ point to the crossing of E ＇ point.
The average hourage of turning right calculated from B ＇ point to C ＇ point is consistent for average hourage to the craspedodrome of E ＇ point with from B ＇ point to the computing method of turning left average hourage of G ＇ point with from B ＇ point, does not tire out state at this.
When calculating crossing hourage, if a direction is that no through traffic direction, then the crossing in this direction is calculated as+∞ hourage.
No matter calculate the average hourage of road-section average hourage or crossing all directions, the average hourage as calculating certain interval section can be regarded as, if A point in accompanying drawing 4 is to A ＇ point, E point in accompanying drawing 5 is to B ＇ point, B ＇ point to C ＇ point, B ＇ point to E ＇ point, B ＇ point to G ＇ point, and its computing method are all consistent.Wherein, point is for entering interval section vehicle detection point, and rear point is for sailing out of interval section vehicle detection point.
Calculate implementation step hourage below just to read the hourage of the E point in accompanying drawing 5 to B ＇ point.
Concrete implementation step is as follows, and workflow is shown in shown in accompanying drawing 6:
1, first acquisition current time is sailed out of all vehicle license plate information of the rear some reader device B ＇ point reading in interval section and is passed through the time in first 5 minutes.
2, then, put in the data of reader device E point reading before entering interval section, to search in 5 times of time ranges being no more than from E point to the B ＇ point normal vehicle operation time by vehicle consistent with B ＇ point-like electron license plate number vehicle database, and using the vehicle that satisfies condition as initial Sample Storehouse, initial sample vehicle number is set as K.
3, each initial sample vehicle was deducted with the time by B ＇ point be designated as t by the time of E point
i, then calculate E point to B ＇ point initial average hourage:
4, the t of each sample vehicle is compared
ivalue and T
1difference, to judge that this value is whether effective, if
then cancelled from initial Sample Storehouse by this sample vehicle, K value deducts 1; If t
i>2T
1, then cancelled from initial Sample Storehouse by this sample vehicle, K value deducts 1.
5, residue sample vehicle average hourage is calculated:
This hourage is exactly that section is from E point to the current average hourage of B ＇ point.
Claims (2)
1. road-section average computing method hourage based on electronic license plate, it is characterized in that: on vehicle, electronic license plate is installed, in the import and export position of road, electronic license plate reader device is installed, when vehicle is by reader device, electronic license plate reader device reads the electronic license plate number of vehicle, and the electronic license plate number that will read, reading time and load position information transmission are to central server, central server is according to the information of many cars read, each sample vehicle journeys time and average hourage are compared, reject hourage obviously than the vehicle sample having larger difference average hourage, COMPREHENSIVE CALCULATING goes out the average hourage of section multiple directions,
Electronic license plate reader device is installed in the described import and export position at road, according to non-mandrel roller right-angled intersection be provided with signal and control lamp right-angled intersection two kinds of different situations and install electronic license plate reader devices;
Described central server is according to the information of many cars read, and the average hourage that COMPREHENSIVE CALCULATING goes out section multiple directions is provided with signal control lamp according to crossing, road and does not have signalization control lamp two kinds of different situations to calculate average hourage;
The described right-angled intersection situation according to non-mandrel roller lamp calculates average hourage: be according to calculate in certain hour section correct read electronic license plate vehicle by averaging time in section, when calculating each road-section average hourage, calculated once every 1 minute, and the vehicle selected by calculating is the vehicle by reader device in first 5 minutes of current computing time;
Described according to there being the account form of signal controlled junctions road-section average hourage to be included in the average running time on this section, the average queuing at crossing by mean transit time three part of time, downstream road junction, be divided three classes by the mean transit time of downstream road junction: craspedodrome direction hourage, to turn right direction hourage and the direction hourage of turning left;
The calculating of the average running time on section is the time from outlet reader device installation site, crossing, upstream to this section of distance in downstream road junction entrance reader device installation site; Crossing computing method hourage respectively to craspedodrome, turning right calculates with turning left; No matter calculate the average hourage of road-section average hourage or crossing all directions, it is all the average hourage calculating certain interval section, its computing method are consistent, and before agreement, point is for entering interval section vehicle detection point, and rear point is for sailing out of interval section vehicle detection point:
1), first acquisition current time is sailed out of all vehicle license plate information of the rear some reader device reading in interval section and is passed through the time in first 5 minutes;
2), then, put in the data of reader device reading before entering interval section, to search within the scope of certain hour by vehicle consistent with rear point-like electron license plate number in vehicle database, and using the vehicle that satisfies condition as initial Sample Storehouse, initial sample vehicle number is set as K;
3), by each initial sample vehicle with the time by rear point deduct and be designated as by the time of front point, then calculate front arrive rear point initial average hourage:
4), compare each sample vehicle value and difference, to judge that this value is whether effective, if then cancelled from initial Sample Storehouse by this sample vehicle, K value deducts 1; If then cancelled from initial Sample Storehouse by this sample vehicle, K value deducts 1;
5) residue sample vehicle average hourage is calculated:
This hourage is exactly the current average hourage that rear point is put in section in the past.
2. as claimed in claim 1 based on road-section average computing method hourage of electronic license plate, it is characterized in that: described according within the scope of rear some place certain hour by finding out the vehicle consistent with point-like electron license plate number before E in vehicle database, its time range be no more than in the past point to 5 times of times of rear normal vehicle operation time.
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| CN107025788B (en) * | 2017-05-17 | 2020-03-17 | 青岛海信网络科技股份有限公司 | Travel time prediction method and device |
| TWI651694B (en) * | 2017-12-26 | 2019-02-21 | 中華電信股份有限公司 | Method for calculating travel time of traffic route |
| CN108364464B (en) * | 2018-02-02 | 2020-10-16 | 北京航空航天大学 | Probability model-based public transport vehicle travel time modeling method |
| CN108564793A (en) * | 2018-05-31 | 2018-09-21 | 重庆大学 | A kind of Travel Time Estimation Method based on RFID electronic license plate data |
| CN112330953A (en) * | 2020-10-10 | 2021-02-05 | 杭州翔毅科技有限公司 | Traffic control method, device and equipment based on cloud data and storage medium |
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