CN108648444A - A kind of signalized intersections postitallation evaluation method based on grid model - Google Patents
A kind of signalized intersections postitallation evaluation method based on grid model Download PDFInfo
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- CN108648444A CN108648444A CN201810348871.0A CN201810348871A CN108648444A CN 108648444 A CN108648444 A CN 108648444A CN 201810348871 A CN201810348871 A CN 201810348871A CN 108648444 A CN108648444 A CN 108648444A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0108—Measuring and analyzing of parameters relative to traffic conditions based on the source of data
- G08G1/0112—Measuring and analyzing of parameters relative to traffic conditions based on the source of data from the vehicle, e.g. floating car data [FCD]
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0125—Traffic data processing
- G08G1/0133—Traffic data processing for classifying traffic situation
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Abstract
The signalized intersections postitallation evaluation method based on grid model that the present invention provides a kind of, this method include：The grid model for building intersection, carries out a point direction to the track data of the Floating Car by urban road intersection based on grid model and handles；The traffic circulation parameter of intersection is obtained, which includes the passage average speed of the traffic flow by intersection, the transit time by intersection, the free flow transit time of intersection and intersection；The passage delay time at stop by intersection is calculated according to the traffic circulation parameter of intersection, postitallation evaluation is carried out to intersection according to the current delay time at stop.The present invention is under conditions of having abandoned map limitation, the reason of whole signal intersections that selection area can be traversed carry out real-time dynamic evaluation to intersection, and diagnosis intersection is delayed, the accuracy for ensuring evaluation diagnosis, improves intersection traffic efficiency.
Description
Technical field
The present invention relates to technical field of traffic control more particularly to a kind of signalized intersections operation based on grid model to comment
Valence method.
Background technology
Currently, road traffic increasingly congestion becomes serious social phenomenon, the shadow that signal intersection occasions a delay
Sound is especially prominent.Using rational signal intersection timing scheme can effectively adjustment signal intersection it is logical
Line efficiency, however often there are some problems in practical applications in the timing scheme of current signal intersection, leads to letter
The traffic efficiency of number intersection is not high.Therefore it needs to carry out Real-Time Evaluation diagnosis to signal intersection, according to evaluation
As a result rational timing scheme is obtained.
Currently, the method in the prior art for carrying out postitallation evaluation to signal intersection using floating car data is main
By map matching technology, floating car data is matched on road network, and then extracts the operation ginseng of signal intersection vehicle
Number, analyzes operating parameter.
The above-mentioned method in the prior art for being carried out postitallation evaluation to signal intersection using floating car data is lacked
It puts and includes：The calculation amount of this method is larger, virtually increases the computation burden of computer.
Invention content
The signalized intersections postitallation evaluation method based on grid model that the embodiment provides a kind of, it is existing with customer service
There is the shortcomings that technology.
A kind of signalized intersections postitallation evaluation method based on grid model, including：
The grid model for building intersection, based on the grid model to being floated by the urban road intersection
The track data of motor-car carries out a point direction and handles；
The traffic circulation of the intersection is obtained according to point direction handling result of the track data of the Floating Car
Parameter, the traffic circulation parameter include the traffic flow by intersection, the transit time by intersection, road
The free flow transit time of intersection and the passage average speed of intersection；
The passage delay time at stop by intersection is calculated according to the traffic circulation parameter of the intersection, according to
The current delay time at stop carries out postitallation evaluation to the intersection.
Further, the grid model of the structure intersection, including：
The radiation areas that intersection is determined using the centre coordinate data of intersection, with the seat of intersection
On the basis of marking central point, direction, lower direction, left direction, right direction are respectively apart from intersection central point 150m's in selection
Ranging from radiation areas build the grid model of 3*3, each length of side of grid model using selected radiation areas as target
100m, the grid in grid model is numbered from the lower left corner, from left side to right side, from below to top, number consecutively, number
The grid Grid_ID of 0-8 is Grid_ID=0, Grid_ID=1, Grid_ID=2, Grid_ID=3, Grid_ID=respectively
4, Grid_ID=5, Grid_ID=6, Grid_ID=7, Grid_ID=8, grid centered on wherein Grid_ID=4.
Further, the grid based in the grid model is to the floating by the urban road intersection
The track data of vehicle carries out a point direction and handles, including：
It obtains Floating Car and dot grid is played by driving into the corresponding grid model of tracing point for intersection, sail
Go out the terminal grid in the corresponding grid model of tracing point, according to described dot grid, the terminal grid in the 3*3
Grid model in direction relations, determine the corresponding traffic direction of the track data of the Floating Car.
Further, the side of dot grid, the terminal grid in the grid model of the 3*3 is played described in the basis
To relationship, the corresponding traffic direction of the track data of the Floating Car is determined, including：
Top in the grid model of the 3*3 corresponds to the north, and lower section corresponds to south, and left corresponds to east, and right corresponds to
West；
When the terminal grid is in the surface of described dot grid, the then corresponding operation of the track data of the Floating Car
It keeps straight on for north orientation in direction；
When the terminal grid is in the underface of described dot grid, the then corresponding operation of the track data of the Floating Car
It keeps straight on for south orientation in direction；
When the terminal grid is in the upper right side of described dot grid, the then corresponding operation of the track data of the Floating Car
It turns right for north orientation in direction；
When the terminal grid is in the lower right of described dot grid, the then corresponding operation of the track data of the Floating Car
It turns right for south orientation in direction；
When the terminal grid is in the upper left side of described dot grid, the then corresponding operation of the track data of the Floating Car
Turn left for north orientation in direction；
When the terminal grid is in the lower left of described dot grid, the then corresponding operation of the track data of the Floating Car
Turn left for south orientation in direction.
Further, the track data according to the Floating Car divides direction handling result to obtain the road to hand over
The traffic circulation parameter of prong, the traffic circulation parameter include by the traffic flow of intersection, pass through intersection
Transit time, the free flow transit time of intersection and the passage average speed of intersection, including：
Divide direction handling result according to the track data of each Floating Car, obtains inside the grid model of intersection
The passage volume of traffic Q of all directionsiEach of and total volume of traffic (Q) of intersection, while calculating inside grid model
The weights omega in directioniAnd the weight δ of intersectioni, wherein
Wherein, n indicates intersection total quantity：
Obtain the time T of the central gridding by grid modeli, by intersection total time Time, wherein：
Wherein, ttr[last]To pass through the last one timestamp of Grid_ID=4 tracing points；ttr[first]To pass through Grid_ID
=4 timestamps of tracing point first；Count [tr] be direction setting time in by tracking quantity；ωiFor intersection
The weight coefficient of mouth all directions：
Direction is divided to obtain the free flow time intersection, the period for choosing Floating Car track data is 2:00-5:
00, pass through the instantaneous velocity v of intersection assigned direction>The floating wheel paths of 10m/s are research object, and calculating passes through road
The time of intersection chooses freedom of 15% quantile as the assigned direction after the time-sequencing by intersection
Flow transit time Tf i ree：
Direction calculating is divided to be averaged passage rate Avg_v signal intersection, Selection Center grid Grid_ID=4 makees
For research object, the average speed by the central gridding is calculated, wherein
Wherein, vjTo pass through the Instantaneous velocity values of Grid_ID=4 tracing points；Count [tr] is to lead in the direction 5 minutes
The tracking quantity crossed；
According to the time T by the central gridding where intersectioniWith free flow transit time Tf i reeCalculate road
The current delay D in direction is divided in intersectioni, the total delay Delay of intersection, wherein
Definition Delay (0,10] → A；Delay(10,20]→B；Delay(20,30]→C；
Delay(30,40]→D；Delay(40,50]→E.
Further, described that prolonging by intersection is calculated according to the traffic circulation parameter of the intersection
Between mistaking, postitallation evaluation is carried out to the intersection according to the delay time at stop, including：
The method for dividing direction based on grid model intersection is the Floating Car track data of 3s using time interval,
Divide direction passage delay time at stop D by signal intersection according to describedi, signal intersection divide direction calculating averagely logical
The passage volume of traffic Q of scanning frequency degree Avg_v and intersection inside all directionsiBuild visual intersection postitallation evaluation
Polar diagram, wherein polar coordinates point indicate delay time at stop Delay, and distance is remoter from central point, and delay is bigger；Each polar coordinates point
Size indicate the direction flow, point it is bigger, flow is bigger；The numerical value marked on each point is indicated through intersection
Average speed, speed is faster, and numerical value is bigger, in conjunction with delay time at stop, flow and speed parameter to the operation shape of intersection
State is evaluated.
The embodiment of the present invention proposes one kind and is based on it can be seen from the technical solution that embodiments of the invention described above provide
The postitallation evaluation method of the signal intersection of grid model can traverse selected under conditions of having abandoned map limitation
Whole signal intersections in region carried out real-time dynamic evaluation to intersection every 5 minutes, diagnose intersection
The reason of mouth delay, and then improve intersection traffic efficiency.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without having to pay creative labor, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of fortune based on grid model using the signalized intersections of floating car data provided in an embodiment of the present invention
The process chart of row evaluation method.
Fig. 2 is a kind of logical flow chart dividing direction based on grid model provided in an embodiment of the present invention.
Fig. 3 is a kind of schematic diagram dividing track data direction processing based on grid provided in an embodiment of the present invention.
Fig. 4 is a kind of traffic circulation parameter calculating intersection based on grid model provided in an embodiment of the present invention
Method schematic diagram.
Fig. 5 is the schematic diagram that a kind of inside points direction to intersection provided in an embodiment of the present invention is evaluated.
Specific implementation mode
For ease of the understanding to the embodiment of the present invention, done further by taking several specific embodiments as an example below in conjunction with attached drawing
Explanation, and each embodiment does not constitute the restriction to the embodiment of the present invention.
The embodiment of the present invention uses grid model, has abandoned the limitation of map, utilizes the Floating Car that time interval is 3s
Data were evaluated and were diagnosed to signal intersection in real time every 5 minutes, more refine to signal intersection
Mouth carries out evaluation diagnosis and analysis, has saved cost, has improved computational efficiency.
It is provided in an embodiment of the present invention a kind of to be commented using the operation of the signalized intersections of floating car data based on grid model
The process flow of valence method is as shown in Figure 1, include following processing step：
Step 11, the grid model for building urban road intersection reconstruct intersection using grid model, are based on net
Grid in lattice model carries out a point direction to Floating Car track data and handles.To abandon the limitation using map, improve
Computational efficiency.
Step 12 divides direction to obtain traffic circulation parameter according to grid model, obtains each road in city in real time and hands over
The traffic circulation parameter of prong, the traffic circulation parameter include by the traffic flow of intersection, pass through intersection
Transit time, the free flow transit time of intersection, intersection passage average speed and intersection
Signal lamp parameter.
Step 13 calculates the delay time at stop by intersection according to the traffic circulation parameter of intersection, for
The inside points direction of intersection is evaluated, and overall merit is carried out for entire intersection.
Step 14 diagnoses intersection, to the operating status of the intersection under different traffic behaviors
It is adjusted, improves the operational efficiency of intersection.
In the concrete application of the present invention, above-mentioned steps 11 specifically include：Fig. 2 is that the present invention is based on grid models point
The logical flow chart in direction.As shown in Fig. 2, grid model of the present invention rebuilds intersection, profit
The radiation areas that intersection is determined with the centre coordinate data of intersection are with the coordinate central point of intersection
Benchmark, direction, lower direction, left direction, the right direction ranging from radiation apart from intersection central point 150m respectively in selection
Region.Using selected radiation areas as target, the grid model of 3*3, each length of side 100m of grid model, grid mould are built
Grid in type is numbered from the lower left corner, from left side to right side, from below to top, number consecutively, the grid of number 0-8
Grid_ID is Grid_ID=0, Grid_ID=1, Grid_ID=2, Grid_ID=3, Grid_ID=4, Grid_ID respectively
=5, Grid_ID=6, Grid_ID=7, Grid_ID=8, grid centered on wherein Grid_ID=4.
Fig. 3 is a kind of signal dividing Floating Car track data direction processing based on grid provided in an embodiment of the present invention
Figure.A point direction is carried out to the track data of the Floating Car by intersection to handle, it is logical to obtain Floating Car based on grid model
It crosses driving into the corresponding grid model of tracing point for intersection and plays dot grid, be driven out to the corresponding net of tracing point
Terminal grid in lattice model is closed according to the direction of described dot grid, the terminal grid in the grid model of the 3*3
System, determines the corresponding traffic direction of the track data of the Floating Car.
Top in the grid model of the 3*3 corresponds to the north, and lower section corresponds to south, and left corresponds to east, and right corresponds to
West；
When the terminal grid is in the surface of described dot grid, the then corresponding operation of the track data of the Floating Car
It keeps straight on for north orientation in direction；
When the terminal grid is in the underface of described dot grid, the then corresponding operation of the track data of the Floating Car
It keeps straight on for south orientation in direction；
When the terminal grid is in the upper right side of described dot grid, the then corresponding operation of the track data of the Floating Car
It turns right for north orientation in direction；
When the terminal grid is in the lower right of described dot grid, the then corresponding operation of the track data of the Floating Car
It turns right for south orientation in direction；
When the terminal grid is in the upper left side of described dot grid, the then corresponding operation of the track data of the Floating Car
Turn left for north orientation in direction；
When the terminal grid is in the lower left of described dot grid, the then corresponding operation of the track data of the Floating Car
Turn left for south orientation in direction.
Illustratively, it if tracing point is entered with the directions Grid_ID=1, is driven out to the directions Grid_ID=7, then the track side
It keeps straight on to for north orientation.If tracing point is entered with the directions Grid_ID=1, it is driven out to the directions Grid_ID=3, then the course bearing is
North orientation turns left.If tracing point is entered with the directions Grid_ID=1, it is driven out to the directions Grid_ID=5, then the course bearing is north orientation
It turns right.The running orbit direction of Floating Car track data is depicted based on identical judgment method.
In the concrete application of the present invention, the traffic circulation parameter of the calculating intersection in above-mentioned steps 12
Specific steps are as shown in figure 4, specifically include：
Divide the method in direction using grid model intersection, obtains the passage traffic of all directions inside intersection
Measure (Qi) and total volume of traffic (Q), while calculating the weight (ω in each direction inside intersectioni) and city
In each intersection weight (δi), wherein
Wherein, n indicates intersection total quantity.
Divide the method in direction using grid model intersection, obtains and pass through intersection institute inside intersection
Central gridding time (Ti), pass through intersection total time (Time), wherein
Wherein, ttr[last]To pass through the last one timestamp of Grid_ID=4 tracing points；ttr[first]To pass through Grid_ID
=4 timestamps of tracing point first；Count [tr] be direction setting time (such as 5 minutes) in by tracking quantity；
ωiFor the weight coefficient of intersection all directions.
The method for dividing direction using grid model intersection divides direction to obtain the free flow time intersection,
The period for choosing floating car data is (2:00-5:00), pass through the instantaneous velocity (v of intersection assigned direction>10m/s)
Floating wheel paths be research object, calculate through time of intersection.After the time-sequencing by intersection,
Choose free flow transit time of 15% quantile as the assigned direction
The method for dividing direction using grid model intersection divides direction calculating averagely current signal intersection
Speed (Avg_v), Selection Center grid Grid_ID=4 is as research object.Calculate the average speed by the grid, wherein
Wherein, vjTo pass through the Instantaneous velocity values of Grid_ID=4 tracing points；Count [tr] is to lead in the direction 5 minutes
The tracking quantity crossed；
Divide the method in direction using grid model intersection, passes through intersection inside acquired intersection
Time (the T of the central gridding at placei), free flow transit timeCalculate to obtain the passage delay of intersection point direction
(Di), total delay Delay, wherein
Definition Delay (0,10] → A；Delay(10,20]→B；Delay(20,30]→C；
Delay(30,40]→D；Delay(40,50]→E；
In the concrete application of the present invention, above-mentioned steps 15 specifically include：Intersection evaluation of running status side
The formulation of method and delay diagnosis optimisation strategy are as follows：
Fig. 5 is the schematic diagram that a kind of inside points direction to intersection provided in an embodiment of the present invention is evaluated.
The method for dividing direction based on grid model intersection, using the Floating Car track data that time interval is 3s, according to above-mentioned
Passage delay time at stop (the D for dividing direction by signal intersection obtainedi), signal intersection divides direction calculating average
Passage rate (Avg_v), the passage volume of traffic (Q of intersection inside all directionsi), based on this and export evaluation can
Depending on the intersection postitallation evaluation polar diagram of change, as shown in figure 5, wherein polar coordinates point indicates the delay time at stop (Delay), away from
Luxuriant central point is remoter, and delay is bigger.The size each put indicates the flow of the direction, and point is bigger, and flow is bigger.On each point
The numerical value of mark indicates the average speed by intersection, and speed is faster, and numerical value is bigger, by data anastomosing algorithm,
The operating status of intersection is evaluated in conjunction with delay time at stop, flow and speed three.Then, intersection is extracted
Traffic signal timing data, in conjunction with intersection operating status by transit time in traffic circulation parameter and traffic flow into
Row matching, obtains the traffic signal timing scheme of rational intersection.
In conclusion the embodiment of the present invention proposes a kind of postitallation evaluation of the signal intersection based on grid model
Method can traverse whole signal intersections of selection area, every 5 points under conditions of having abandoned map limitation
The reason of clock carries out real-time dynamic evaluation to intersection, and diagnosis intersection is delayed, and then it is logical to improve intersection
Line efficiency.
The present invention has abandoned calculating complicated during map match calculates, and uses the algorithm of grid model in another way, carries
High computational efficiency, while using the Floating Car track data of interval 3s, it is ensured that the accuracy and reasonability of diagnosis are evaluated, this
Invention reduces intersection delay and plays an important roll for improving intersection traffic efficiency.
One of ordinary skill in the art will appreciate that：Attached drawing is the schematic diagram of one embodiment, module in attached drawing or
Flow is not necessarily implemented necessary to the present invention.
One of ordinary skill in the art will appreciate that：The module in equipment in embodiment can describe to divide according to embodiment
It is distributed in the equipment of embodiment, respective change can also be carried out and be located in one or more equipment different from the present embodiment.On
The module for stating embodiment can be merged into a module, can also be further split into multiple submodule.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
Subject to.
Claims (6)
1. a kind of signalized intersections postitallation evaluation method based on grid model, which is characterized in that including：
The grid model for building intersection, based on the grid model to the Floating Car by the urban road intersection
Track data carry out a point direction and handle；
The traffic circulation parameter of the intersection is obtained according to point direction handling result of the track data of the Floating Car,
The traffic circulation parameter includes the traffic flow by intersection, the transit time by intersection, intersection
The passage average speed of the free flow transit time and intersection of mouth；
The passage delay time at stop by intersection is calculated according to the traffic circulation parameter of the intersection, according to described
The current delay time at stop carries out postitallation evaluation to the intersection.
2. according to the method described in claim 1, it is characterized in that, the grid model of the described structure intersection, including：
The radiation areas that intersection is determined using the centre coordinate data of intersection, in the coordinate of intersection
On the basis of heart point, direction, lower direction, left direction, the right direction range apart from intersection central point 150m respectively in selection
For radiation areas, using selected radiation areas as target, the grid model of 3*3 is built, each length of side 100m of grid model,
Grid in grid model is numbered from the lower left corner, from left side to right side, from below to top, and number consecutively, number 0-8's
Grid Grid_ID, be respectively Grid_ID=0, Grid_ID=1, Grid_ID=2, Grid_ID=3, Grid_ID=4,
Grid_ID=5, Grid_ID=6, Grid_ID=7, Grid_ID=8, grid centered on wherein Grid_ID=4.
3. according to the method described in claim 1, it is characterized in that, the grid based in the grid model is to passing through
The track data of the Floating Car of the urban road intersection carries out a point direction and handles, including：
It obtains Floating Car and dot grid is played by driving into the corresponding grid model of tracing point for intersection, be driven out to rail
Terminal grid in the corresponding grid model of mark point, according to described dot grid, the terminal grid the 3*3 net
Direction relations in lattice model determine the corresponding traffic direction of the track data of the Floating Car.
4. according to the method described in claim 3, it is characterized in that, playing dot grid, the terminal grid described in the basis
Direction relations in the grid model of the 3*3 determine the corresponding traffic direction of the track data of the Floating Car, including：
Top in the grid model of the 3*3 corresponds to the north, and lower section corresponds to south, and left corresponds to east, and right corresponds to west；
When the terminal grid is in the surface of described dot grid, then the corresponding traffic direction of the track data of the Floating Car
It keeps straight on for north orientation；
When the terminal grid is in the underface of described dot grid, then the corresponding traffic direction of the track data of the Floating Car
It keeps straight on for south orientation；
When the terminal grid is in the upper right side of described dot grid, then the corresponding traffic direction of the track data of the Floating Car
It turns right for north orientation；
When the terminal grid is in the lower right of described dot grid, then the corresponding traffic direction of the track data of the Floating Car
It turns right for south orientation；
When the terminal grid is on the upper left side of described dot grid, then the corresponding traffic direction of the track data of the Floating Car
Turn left for north orientation；
When the terminal grid is in the lower left of described dot grid, then the corresponding traffic direction of the track data of the Floating Car
Turn left for south orientation.
5. according to the method described in claim 3 or 4, which is characterized in that the track data according to the Floating Car
Point direction handling result obtain the traffic circulation parameter of the intersection, which includes by road friendship
The traffic flow of prong passes through the transit time of intersection, the free flow transit time of intersection and intersection
The passage average speed of mouth, including：
Divide direction handling result according to the track data of each Floating Car, obtains each side inside the grid model of intersection
To passage volume of traffic QiAnd total volume of traffic (Q) of intersection, while calculating each direction inside grid model
Weights omegaiAnd the weight δ of intersectioni, wherein
Wherein, n indicates intersection total quantity：
Obtain the time T of the central gridding by grid modeli, by intersection total time Time, wherein：
Wherein, ttr[last]To pass through the last one timestamp of Grid_ID=4 tracing points；ttr[first]To pass through Grid_ID=4 rails
First timestamp of mark point；Count [tr] be direction setting time in by tracking quantity；ωiIt is each for intersection
The weight coefficient in direction：
Direction is divided to obtain the free flow time intersection, the period for choosing Floating Car track data is 2:00-5:00, lead to
Cross the instantaneous velocity v of intersection assigned direction>The floating wheel paths of 10m/s are research object, and calculating passes through intersection
The time of mouth chooses free flow of 15% quantile as the assigned direction after the time-sequencing by intersection
The row time
Direction calculating is divided to be averaged passage rate Avg_v signal intersection, Selection Center grid Grid_ID=4 is as grinding
Study carefully object, calculate the average speed by the central gridding, wherein
Wherein, vjTo pass through the Instantaneous velocity values of Grid_ID=4 tracing points；Count [tr] be in the direction 5 minutes by rail
Mark quantity；
According to the time T by the central gridding where intersectioniWith free flow transit timeCalculate intersection
Divide the current delay D in directioni, the total delay Delay of intersection, wherein
Definition Delay (0,10] → A；Delay(10,20]→B；Delay(20,30]→C；
Delay(30,40]→D；Delay(40,50]→E.
6. according to the method described in claim 5, it is characterized in that, described join according to the traffic circulation of the intersection
Number calculates the delay time at stop by intersection, and postitallation evaluation is carried out to the intersection according to the delay time at stop,
Including：
The method for dividing direction based on grid model intersection is the Floating Car track data of 3s using time interval, according to
It is described to divide direction passage delay time at stop D by signal intersectioni, signal intersection divide direction calculating averagely current speed
Spend the passage volume of traffic Q of all directions inside Avg_v and intersectioniBuild visual intersection postitallation evaluation pole seat
It marks on a map, wherein polar coordinates point indicates delay time at stop Delay, and distance is remoter from central point, and delay is bigger；Each polar coordinates point is big
The small flow for indicating the direction, point is bigger, and flow is bigger；The numerical value marked on each point indicates being averaged by intersection
Speed, speed is faster, and numerical value is bigger, in conjunction with delay time at stop, flow and speed parameter to the operating status of intersection into
Row evaluation.
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| CN109348423A (en) * | 2018-11-02 | 2019-02-15 | 同济大学 | A kind of arterial road coordinate control optimization method based on sample path data |
| CN109509350A (en) * | 2018-12-24 | 2019-03-22 | 银江股份有限公司 | A kind of intersection operational efficiency calculation method based on oriented two points of weighting networks |
| CN110807928A (en) * | 2019-11-06 | 2020-02-18 | 南京莱斯信息技术股份有限公司 | Statistical evaluation method for bus priority effect |
| CN111292533A (en) * | 2020-02-11 | 2020-06-16 | 北京交通大学 | Method for estimating flow of arbitrary section of highway at any time period based on multi-source data |
| WO2020248197A1 (en) * | 2019-06-13 | 2020-12-17 | Beijing Didi Infinity Technology And Development Co., Ltd. | Saturation flow estimation for signalized intersections using vehicle trajectory data |
| CN113570870A (en) * | 2021-09-27 | 2021-10-29 | 华砺智行(武汉)科技有限公司 | Distributed intersection average delay estimation method, device, equipment and storage medium |
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