CN103531024A

CN103531024A - Dynamic traffic network urban road feature model and modeling method thereof

Info

Publication number: CN103531024A
Application number: CN201310518458.1A
Authority: CN
Inventors: 徐正全; 王争鸣; 王涛
Original assignee: Wuhan Xu Yun Science And Technology Ltd
Current assignee: Wuhan Xu Yun Science And Technology Ltd
Priority date: 2013-10-28
Filing date: 2013-10-28
Publication date: 2014-01-22
Anticipated expiration: 2033-10-28
Also published as: CN103531024B

Abstract

The invention discloses a dynamic traffic network urban road feature model and a modeling method thereof. The dynamic traffic network urban road feature model comprises a dynamic traffic network urban road model, a dynamic traffic network running model, a dynamic traffic urban vehicle model and a control center model. The invention aims to solve the problems of poor data consistency and incapacity of carrying out real-time dynamic regulation of a conventional urban traffic network data model, and provides a GIS-T (Geographic Information System for Transportation) data hierarchical model, and the dynamic traffic network urban road feature model is established. Compared with the conventional urban traffic network data model, the dynamic traffic network urban road feature model comprehensively describes urban traffic feature information from macroscopic view to microscopic view, realizes optimized expression of the feature model and optimization of a road network structure and realizes dynamic simulation and regulation of traffic objects.

Description

A kind of dynamic traffic road network urban road feature model and modeling method thereof

Technical field

The present invention relates to geographic information system technology field, relate in particular to a kind of dynamic traffic road network urban road feature model and modeling method thereof.

Background technology

Urban road network is being born the task of country and urban development construction and running, is also the basic facilities of resident's routine work life.Ubiquitous traffic congestion in big city, traffic safety, traffic environment pollute and the problem such as traffic energy consumption more and more causes social attention.And urban transport problems can not depart from city space and uses the motion of mathematics physics model simulation traffic flow and mutual isolatedly, must be in conjunction with the concept and methodology in space, could more effectively analyze and research traffic problems and the impact on city and whole road network thereof.

T-GIS: (GIS-T) is the important branch of Geographic Information Theory and technology, the integrated of Geographic Information System (GIS) and multiple transport information analysis and treatment technology, it is the informationalized key foundation of road multi-mode system, traffic problems are carried out to modeling from concept of space, using the method for spatial statistics, many feature models and combination thereof to analyze, is emerging direction and the important applied field of traffic study, analysis and management.The expression of transport information is of crucial importance in GIS-T, not only means of transportation management, the data structure that Traffic Information managerial demand is good, in the traffic application such as traffic network planning, intelligent navigation, trip information service, all need to expand traditional GIS data structure.Data are bases of GIS, and data model is for expressing the contact between data and logical organization form in GIS.Because transport information is of a great variety, differ from one another, need rational form tissue, so GIS-T data model is theory and the technical foundation that realizes the fusion of multiple dimensioned various dimensions dynamic traffic data, management and analysis and utilization.

GIS-T data it is generally acknowledged and can be divided into three layers, i.e. road network layer, satellite information layer and transport information layer.Road net provides Data support for diverse network analytic function, for road satellite information and transport information provide geospatial reference, concrete data content comprises topological connected relation between road aggregate information, road, road base attribute (title, length, width, address etc.), road traffic attribute (Performance Level, current direction, average speed etc.) etc.Road satellite information mainly comprises road affiliated facility (traffic sign, road sign, traffic lights, isolated column, bridge, charge station etc.), point of interest (hotel, school, hospital etc.) and linear properties (attribute that is linear distribution along road, as public bus network etc.).Transport information comprises traffic restrictive condition and dynamic information.Traffic restriction comprises the direction of traffic restriction, vehicle-speed limit of road itself etc. in the general sense, and the current restriction on crossing (as turning to restriction).Dynamic information includes telecommunication flow information, traffic event information and mobile object information.Telecommunication flow information is by macroscopical road traffic condition of the reactions such as flow, speed.Mobile object mainly refers to the participant of traffic behavior, as vehicle, pedestrian.

In existing traffic data model, node-arc segment model is that road network the most frequently used in traffic system is expressed, and node is used for expressing various forms of road intercommunications crossing, and segmental arc is for expressing road segment segment.In actual applications, due to the restriction of road direction, often utilize the segmental arc of two opposite directions to represent two-way road or flow to different parallel roads.Turn to sign and GO TO table to be used for recording all direction informations of crossing, one turns to record to enter segmental arc and one by one to leave segmental arc and define.Node-arc segment model is based upon on the basis of graph theory, be simple and easy to use, support high-level efficiency network analysis, but the feature of plane strengthening makes complete road interrupt at Nodes, cause road to lose complete semantic feature, be difficult to linear orientation and process the problems such as segmentation attribute, website of road, when expressing multimodel traffic network, its deficiency seems particularly evident (referring to document 1).Non-planar data model has been abandoned plane strengthening process, does not require that intersection place must produce node, and entire road is stored as a geometric object, has avoided impossible turning in the generation of non-topological node and Stereo-traffic network.(referring to document 2).But node-arc segment model linear orientation is difficult, the many-one relationship difficulty of processing key element-attribute.

Line property model is on the basis of node-arc segment model, by the distance to known point and direction, determine the position (referring to document 3) of any location point on linear feature, dynamic segmentation data model is given up attribute and segmental arc, node one-to-one relationship, attribute is separated from node-arc section topological structure, utilize path, section and these three Topological data structure fundamentals of event, can express well segmentation attribute and the multiple attribute of linear key element, realize the bidirectional inquiry between geometric data and attribute data, for linear position is with reference to build path system, greatly improved GIS to the processing power of linear data (referring to document 4).

The traffic characteristics of urban road network is often closely related with track, data model needs to define independently track entity, and describe between parallel track and turning point, turnover track between the impedance that turns to of connected relation, the current impedance on track and restriction, track and restriction etc.Data model based on track generally has two kinds, and the one, take real track as basic modeling target, the 2nd, take runway or comprehensive track is basic modeling target.Data model based on real track builds track by dynamic segmental technology, using each track as an independent path storage, and the lateral position in track, the connected relation (referring to document 5) between the peace of the connected relation between track, turning point place runway are described.Driveway is corresponding to the obstructed travel direction of road, can be considered as same path link to and the track of intercommunication at any time comprehensive, i.e. comprehensive track.Data model based on driveway is using driveway as basic modeling unit, in attribute, store the semantic relation of itself and road, both consider the difference of same road different directions track traffic characteristic, retained again topological connection relation between track geometric data and track (referring to document 6).

GIS-T Spatio-Temporal Data Model for Spatial is being integrated on the basis of linear data model and track data model, consider to block up the factors such as degree, road speed, introduce elevation dimension (third dimension) and time dimension (fourth dimension) and describe dynamic multidimensional traffic, realize the space-time management of means of transportation, and the integrated expression (referring to document 7) of road net, transport information and mobile object (comprising vehicle, pedestrian etc.).

Comprehensive analysis, there is following problem in current traffic data model:

(1) there is the problem of data consistency in traditional GIS-T data hierarchy model, and traffic data model is mainly the object that realizes navigation, and to the analytical performance of traffic circulation ability a little less than.

(2) traditional road net model is static and generates according to actual road conditions simulation, once model generates, change the attribute of a certain key element, needs to regenerate model, does not have dynamic or dynamic is poor, cannot adjust and contrast in real time.

Summary of the invention

The technical problem to be solved in the present invention is for defect of the prior art, and a kind of dynamic traffic road network urban road feature model and modeling method thereof are provided.

The technical solution adopted for the present invention to solve the technical problems is:

A road network urban highway traffic feature model, described dynamic traffic road network urban highway traffic feature model comprises dynamic traffic road network urban traffic network model, dynamic traffic road network intervention model, dynamic traffic road network moving model and control center's model;

Described dynamic traffic road network urban traffic network model, the infrastructure and the topological relation thereof that for dynamically describing operation urban transportation, rely on, comprising:

Dynamic traffic road network module, for representing road type and direction, for dynamically describing one-way road road, two ways road, the road net key elements such as bend, in model, road adopts the elastic construction that section splicing extends, and joint adopts stretch mode docking;

Dynamic intercommunication crossing module, for dynamically describing the cross junction that connects one-way road road and two ways road, T-shaped crossing, the intersections such as traffic circle and humanoid crossing;

Dynamic pedestrian passageway wire module, crosses diatom and position and structure for dynamically describing People's Bank of China;

Dynamic signal indicating lamp module, for dynamically describing crossing signal lamp and section signal lamp, controls for the state of signal lamp being carried out to management able to programme artificial and based on algorithm; Signal lamp parameter is comprised of three fields: digital modulation, signal lamp, track pilot lamp;

Dynamic road Sign Board module, for dynamically describing the Sign Board that affects urban road operation;

Dynamic road connects separation facilities model, comprises dynamic viaduct, Dynamic Vehicle road vector cut-off rule, the contents such as dynamic isolation hurdle and dynamically stop line.For dynamically describing the models such as viaduct, track vector cut-off rule, isolated column and stop line;

Described dynamic traffic road network intervention model, for dynamically describing traffic rules, comprehensive impedance and the traffic events that affects traffic circulation, comprising:

Dynamic traffic rule database, for dynamically describing Vehicle Driving Cycle rule;

Dynamic traffic comprehensive impedance model, for dynamically describing and simulate roadlock and the traffic delay factor of traffic circulation;

Traffic events generation model, for describing all kinds of traffic hazards and accident;

Described dynamic traffic city road network moving model, for dynamically describing various vehicles and areal distribution, operation characteristic and trend etc., comprising:

Dynamic vehicle feature model, for dynamically describing the type, attribute etc. of each vehicle key element; Comprise oversize vehicle series, medium sized vehicle series, dilly series.Car of every generation produces the unique ID of this car simultaneously.This model can be dissimilar according to the random generation of the needs of simulate effect or the setting of thinking, the vehicle of varying number is in the situation of road traveling;

Dynamic vehicle areal distribution model, for dynamically describing the distribution situation of vehicle on each space, traffic zone; Divide traffic zone, set up the quantitative relationship of volume of traffic conversion between each traffic zone, simulate type of vehicle, presence time, garrison quantity, travel time, the trip quantity of various types of vehicles between each traffic zone, and consider the initial and terminal time of dissimilar vehicle.This model can be generated by actual vehicle distribution statistics storehouse, also can be produced by the city distributed architecture matching based on community, institutional settings, factory and enterprise, school, commercial network, social event.

The distributed model of Forecast of Urban Traffic Flow, for dynamically describing magnitude of traffic flow distribution situation in time; Include the discharge model distributing by the commuter time, have the discharge model building by the rule of going on a journey festivals or holidays, have the magnitude of traffic flow distributed model occurring by special season (university report for work season, spring outing autumn outing season etc.).

Dynamic city vehicle moving model, for dynamically describing the ruuning situation of vehicle, simulating vehicle trip feature and areal distribution, vehicle flow and variation tendency.Each feature model based on having built, generates and realizes operation with burying in oblivion in the mutual scheduling of module (the dynamically nucleus module of city vehicle moving model) ，Yu control center model by carrying out vehicle operating.

This model also can according to analogy method and judge its effect need to be according to areal distribution model and the random generation of magnitude of traffic flow distributed model or artificial setting different running method and operation type, the vehicle of performance varying number is in the situation of road traveling.

This model can be added up each car in working time, path and the speed on road surface, simulates wagon flow total amount and the variation tendency of the trip feature of dissimilar vehicle and areal distribution, every road.

Control center's model, for obtaining overall traffic information, accepts operational vehicle request, according to overall operation present situation, is operational vehicle calculation optimization route scheme, and new operation integrated data is bound in request vehicle; According to the various optimized algorithms of signal lamp, generate lamp system and control data, bind into lamp system; Comprise:

Log pattern, realizes obtaining, preserving historical operation, log information;

Administration module, realizes the management to all feature model parameter informations, and the functions such as modification, deletion, preservation, inquiry are provided;

Monitoring module, realizes the visual tracking to each key element parameter state and variation in conjunction with programmable GIS urban road traffic information database and dynamic operation storehouse;

Track module, shows vehicle position and driving trace on GIS road network, can look at any time adjusting data storehouse, checks designated vehicle special time driving trace and magnitude of traffic flow distribution situation, also can derive track data storage.

Press such scheme, dynamic traffic road network urban road feature model also comprises dynamic traffic generation model, according to GIS urban transportation database able to programme and the Runtime Library of each feature model and generation, start monitoring and scheduling center model, realize simulation, the operation and management of dynamic urban transportation.Generation model has Run(to start), Pause(suspends) and Abort(exit) three operations, only, under Pause and Abort state, can revise each feature model parameter, the log pattern of control center's model can record all operations in generating period.

A kind of step of dynamic traffic road network urban road feature model modeling method:

(1) according to city plan, extract urban traffic road topological diagram, generate GIS urban traffic road polar plot;

(2) with reference to urban traffic road topological diagram, according to GIS urban road network polar plot, build dynamic traffic road network urban traffic network model and build and GIS urban road network factor vector figure, comprise the following steps:

(2.1) according to GIS urban traffic road polar plot, build dynamic road net model, described dynamic road net model is used for representing road type and direction; The roads such as described dynamic road net model comprises dynamic one-way road road, dynamic two ways, dynamic bend, in model, road adopts the elastic construction that section splicing extends, and joint employing stretch mode is docked; Described road all has unique data structure, and can be according to realistic simulation picture library by adjusting parameter change road shape and direction; The parameter of described part is shown in concrete implementation section description.

(2.2) according to urban traffic road topological diagram, build dynamic intercommunication crossing model, comprise the dynamic cross junction that connects one-way road road and two ways road, dynamic T-shaped crossing, Dynamic Annular crossing and dynamic humanoid crossing; The equal setting party in each crossing, to lane line, all has unique data structure, and can adjust parameter change intersection shape and direction according to realistic simulation picture library.The parameter that described crossing comprises is shown in concrete implementation section description.

(2.3) according to urban traffic road topological diagram, build dynamic pedestrian passageway line model, diatom is crossed by People's Bank of China can adjust parameter change position, dynamic appending and deletion according to realistic simulation picture library; Described People's Bank of China crosses parameter that diatom comprises and sees that concrete implementation section describes.

(2.4) according to urban traffic road topological diagram, build dynamic signal indicating lamp model, comprise dynamic crossing signal lamp and dynamic section signal lamp,, can adjust that dynamic state of parameters adds and the operation of erasure signal pilot lamp, change pilot lamp according to realistic simulation picture library; Signal lamp is comprised of three parts: digital modulation, signal lamp (LED is arrowhead-shaped), track pilot lamp (changeable driveway type).The parameter of described part is shown in concrete implementation section description.

(2.5) according to urban traffic road topological diagram, build dynamic road Sign Board model, the main Sign Board of considering to affect urban road operation, Sign Board adds and deletes by adjusting dynamic state of parameters according to realistic simulation picture library class; The parameter that described Sign Board comprises is shown in concrete implementation section description.

(2.6) according to urban traffic road topological diagram, build dynamic road and connect separation facilities model, comprise dynamic flyover model, Dynamic Vehicle road vector cut-off rule model, dynamic isolation hurdle model and dynamically stop line model, can adjust dynamic state of parameters interpolation and deletion facility, change shape according to realistic simulation picture library; The parameter of described part is shown in concrete implementation section description.

(3) according to the traffic rules, comprehensive impedance and the traffic events that affect traffic circulation, build dynamic traffic road network intervention model, comprise the following steps,

(3.1) according to traffic rules, build dynamic traffic rule database, for Vehicle Driving Cycle rule is provided;

(3.2) according to the roadlock factor in traffic circulation as irrational traffic network structure, traffic intersection structure, traffic road segment structure etc., according to traffic delay factor, as irrational traffic signals configuration etc. structure dynamic traffic comprehensive impedance model, while being hampered for vehicle, dynamically describing and simulate roadlock and the traffic delay factor of traffic circulation;

(3.3) according to the kind of traffic hazard and accident, account for 1 road ,Zhan 1.5 roads, account for 2 roads as traffic hazard, interim traffic control, turning, lane change, road occupying generation obstruction violate the traffic regulations, the obstruction of accident stream of people wagon flow, traffic construction etc. are to structure traffic events generation models such as the changes of road impedance, for describing all kinds of traffic hazards and accident;

(4) according to the type of vehicle key element, attribute, according to city vehicle distributed model, Forecast of Urban Traffic Flow model and traffic circulation feature, build dynamic urban road network moving model, comprise the following steps:

(4.1) according to the type of vehicle key element and attribute, build dynamic vehicle feature model, comprise oversize vehicle series, medium sized vehicle series, dilly series.Car of every generation produces the unique ID of this car simultaneously; This model can be according to the vehicle of the random generation of the needs of simulate effect or, varying number dissimilar according to the artificial setting of the needs of simulated target the situation at road traveling;

(4.2) build dynamic vehicle areal distribution model, divide traffic zone, set up the quantitative relationship of volume of traffic conversion between each traffic zone, simulate type of vehicle, presence time, garrison quantity, travel time, the trip quantity of various types of vehicles between each traffic zone, and consider the initial and terminal time of dissimilar vehicle; This model can be generated by actual vehicle distribution statistics storehouse, also can be produced by the city distributed architecture matching based on community, institutional settings, factory and enterprise, school, commercial network, social event;

(4.3) build the distributed model of Forecast of Urban Traffic Flow.According to urban traffic control traffic circulation database data statistics, as vehicle driving morning and evening tides rhythm, the traffic trip over the years regular feature of data analysis etc. of blocking up, build the distributed model of Forecast of Urban Traffic Flow, include the discharge model distributing by the commuter time, there is the discharge model building by the rule of going on a journey festivals or holidays, have the magnitude of traffic flow distributed model occurring by special season (university report for work season, spring outing autumn outing season etc.).

(4.4) build dynamic city vehicle moving model.Take the model datas such as urban traffic network model, vehicle feature model, vehicle distributed model, vehicle flow as basis, according to the setting of simulated target and demand, as verified a certain signal controlling algorithm effect in the different vehicle flow situations of zones of different etc., build dynamic city vehicle moving model, this model can be added up time, path and the speed of the road surface of each car under imposing a condition operation, simulates wagon flow total amount and the variation tendency of the trip feature of dissimilar vehicle and areal distribution, every road.Each feature model and default environment and the condition of this model based on having built, generates and realizes operation with burying in oblivion in the mutual scheduling of module ，Yu control center model by carrying out vehicle operating;

Vehicle operating generates and buries in oblivion module, for

(a) according to the constraint condition of above-mentioned dynamic traffic road network urban traffic network model, dynamic traffic road network intervention model, dynamic traffic road network moving model, generate comprehensive vehicle operating parameters, generate all driving traces that vehicle satisfies condition, be built into vehicle dynamic runtime database; And can realize collection, monitoring by control center, according to rule, intervene and manage.

(b) operational vehicle possesses the model interactive instruction function with control center.In vehicle operating, after there is the setting sight of intervention model, associated operational vehicle can be according to new constraint condition, and path planning, generates new optimization driving trace again, packs, is bound in runtime database for vehicle operating model extraction.

(c) vehicle operating model possesses at any time all types of service datas of that set, the random or artificial institute's Prescribed Properties data that produce and generation is extracted, packed and be bound in dynamic operation storehouse, by the time period of model requirement (random time or time for balance or fixed time), from starting point, automatically generate vehicle operation, arrive after (service data is submitted to dynamic operation storehouse) registered in destination and automatically bury in oblivion----nullify.

(5) structure of dynamic urban road network structural model.According to the recognition result of sweep vector topological diagram (as topology architectural feature data), feature code data (seeing the specific descriptions of each road feature model in " embodiment " chapters and sections) comparison with dynamic traffic road network feature model, and dynamic traffic road network urban road feature model is associated with corresponding GIS urban transportation polar plot (this figure forms the existing associated making of data plot that possesses the Big Dipper or the GPS elements of a fix of urban road polar plot and laboratory), build programmable GIS urban road traffic information database and vehicle dynamic Runtime Library structure, and then build and generate dynamic urban road network structural model.

(6) build control center's model, mainly comprise log pattern, for realizing the collection of historical operation, log information, preservation.Administration module, for realizing the management to all feature model parameter informations, provides the functions such as modification, deletion, collection, preservation, inquiry.Monitoring module, for realizing the visual tracking to each key element parameter state and variation in conjunction with programmable GIS urban road traffic information database and dynamic operation storehouse (being set up by above-mentioned dynamic urban road network structural model).Track module, for showing vehicle position and driving trace on GIS road network, can look into adjusting data storehouse at any time, checks designated vehicle special time driving trace and magnitude of traffic flow distribution situation, also can derive track data storage.

(7) control center's model obtains overall traffic information, accepts operational vehicle request, according to overall operation present situation, is this car calculation optimization route scheme, and new operation integrated data is bound in request vehicle;

Control center's model construction road network overall operation situation map;

Control center's model, according to instruction, generates lamp system according to the various optimized algorithms of signal lamp and controls data, binds into lamp system.

(8) build dynamic traffic generation model, according to GIS urban transportation database able to programme and the Runtime Library of each feature model and generation, start monitoring and scheduling center model, realize simulation, the operation and management of dynamic urban transportation.Generation model has Run(to start), Pause(suspends) and Abort(exit) three operations, only, under Pause and Abort state, can revise each feature model parameter, the log pattern of control center's model can record all operations in generating period.

Model of the present invention can solve in-problem principle in prior art:

Model of the present invention adopts the data hierarchy model from macroscopic view to microcosmic, has overcome the Data Consistency of traditional data according to information type layering; Model is considered the operating all key elements of urban transportation comprehensively, each key element is dynamically described, the GIS urban road traffic information database able to programme and the dynamic operation storehouse that build make traffic key element and ruuning situation to adjust in real time and to contrast, and global monitoring, management and adjustment are realized in monitoring and scheduling center.And capable of dynamic generates all types of real-time traffic operation situation window figure.More traditionally take navigation and be that the traffic model of object has the checking ability of stronger traffic circulation analysis ability, traffic network planning ability, prediction scheme planning algorithm measure rule.

The beneficial effect that the present invention produces is:

(1) the invention provides from macroscopic view, sight to the data hierarchy model of microcosmic, between level, be mutually connected and restriction, guarantee consistance and the accuracy of data.

In macroscopic view, can instruct urban highway traffic planning, analyze traffic circulation load state and the ability of traffic network and facility structure.Middle sight can be verified traffic prediction scheme, traffic programme, signal controlling algorithm, traffic scheduling measure of control, traffic administration rule, optimizes road construction scheme, roading scheme, road dispatch control scheme, signal command algorithm arrangement.On microcosmic, refine to the complete embodiment of all types of road traffic key elements, the running status under the space distribution of vehicle approach reality, each condition of traffic.Make the simulation of system closer to reality.Can optimize dispatch control, the management of road traffic controls.Simultaneously, for the dispatch control of road traffic, management control, routing, trip guiding etc., there are higher model credibility and traffic simulation degree of accuracy and traffic tendency prediction accuracy.

(2) traffic network urban road feature model is dynamic and vector quantization model, vector quantization structure makes only to need to adjust parameter according to certain rule and methodology, can realize the change of key element form, realize the optimization of Optimal Expression and the road network structure of feature model, the simulation of realization to mobile object, more easily realize road network and optimize the comparison of front and back road load-carrying properties, model can better be brought into play the transportation industry architecture tenabilities such as its traffic guiding, railway network planning, construction control, command scheduling management.

(3) this system is the master tool of the intelligent operation and management of urban transportation.

Based on this system, we can design, verify, optimize the algorithm (for the command scheduling algorithm of various road load, impedance situation) of various traffic signals point controls, the control of Dai Kong ,Mian Kong, district, and intelligence and the science signal management realized are truly controlled.

Based on this system, we can obtain the basic data of enough urban traffic road operations, can instruct and realize the macroscopic view (planning, management) of the traffic route under various conditions and the science operation of microcosmic (travel, run).And then realize intelligent transportation operation and trip truly, and promote chain environmental protection and energy saving effect.Social benefit can not be underestimated.

By the regarded as output controlling to this system, traffic network can be planned, the management of traffic network construction, point duty, traffic network safeguard that the work of the barriers between different departments such as construction includes a large data system in and manage, thereby enter the good environment of the mutual collaborative work of all departments.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:

Fig. 1 is GIS-T data hierarchy model schematic diagram of the present invention.

Fig. 2 is the process flow diagram that the present invention builds dynamic traffic road network urban road feature model.

Fig. 3 is dynamic signal indicating lamp operation rule process flow diagram of the present invention.

Fig. 4 is dynamic traffic road network information of the present invention data base organization schematic diagram.

Fig. 5 is that dynamic traffic road network urban transportation feature model general structure of the present invention is related to schematic diagram.

Embodiment

In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.

A hierarchical model for GIS-T data, comprises city plan, urban traffic road topological diagram, GIS urban traffic road polar plot, four sublayers of GIS urban road network factor vector figure (comprising the auxiliary sublayer of GIS vehicle operating mapping).

The invention provides a kind of dynamic traffic road network urban road feature model modeling method, step as shown in Figure 2:

Step S1: extract urban traffic road topological diagram according to city plan, as shown in Figure 1.

Step S2: according to urban traffic road topological diagram, generate GIS urban traffic road polar plot and build dynamic traffic road network urban traffic network model, comprise following sub-step,

S2-1: build dynamic road pessimistic concurrency control, comprise dynamic one-way road road (bicycle road, two-way traffic and three tracks), dynamically two ways road (two-way traffic, three tracks, Four-Lane Road, five tracks), dynamically bend (one-way road road and two ways road).The elastic construction that road adopts section splicing to extend, is convenient to joint and adopts stretch mode docking.All types of roads all have unique data structure, as shown in table 1, and can be according to realistic simulation picture library by adjusting parameter change road shape and direction.

The data structure of table 1 dynamic road net

Definition class DynamicRoadNet, builds the provisional and permanent dynamic adjustment that member function is realized road net key element parameter, as shown in table 2.

The member function of table 2DynamicRoadNet class

S2-2: build dynamic intercommunication crossing model, comprise the dynamic cross junction that connects one-way road road and two ways road, dynamically T-shaped crossing, Dynamic Annular crossing and dynamic humanoid crossing.The equal setting party in each crossing, to lane line, all has unique data structure, as shown in table 3, and can adjust parameter change intersection shape and direction according to realistic simulation picture library.

Table 3 is intercommunication crossing data structure dynamically

Definition class DynamicCross, builds the provisional and permanent dynamic adjustment that member function ChangeToCrossTurn () realizes intercommunication intersection turning direction, and its result is subject to the constraint of LanesType and LanesPosit in DynamicRoadNet class.

S2-3: build dynamic pedestrian passageway line model, data structure is as shown in table 4, People's Bank of China crosses diatom and can cross position, the dynamic appending of diatom and delete diatom according to realistic simulation picture library adjustment parameter change.

Table 4 dynamic pedestrian is crossed diatom data structure

Definition class DynamicWalkLine, build member function ChangeToWalkLineLoc () and adjust People's Bank of China's passageway line position, member function ChangeToWalkLineEx () deletes or recovers People's Bank of China and cross diatom, ChangeToWalkLineAr () adjusts People's Bank of China and crosses diatom size, its result is retrained by RoadWidth in DynamicRoadNet class, realizes the provisional and permanent dynamic adjustment of People's Bank of China's passageway line feature.

S2-4: build dynamic signal indicating lamp model, comprise dynamic crossing signal lamp and dynamic section signal lamp, data structure is as shown in table 5, can adjust that dynamic state of parameters adds and the operation of erasure signal pilot lamp, change pilot lamp according to realistic simulation picture library.Signal lamp is comprised of three parts: digital modulation, signal lamp (LED is arrowhead-shaped), track pilot lamp (changeable driveway type).

Can be according to realistic simulation picture library and signal lamp control algorithm able to programme (artificially setting or external data), adjust each belisha beacon status attribute and time parameter thereof, adjust belisha beacon layout parameter, moving law and the method for operation of dynamic appending and erasure signal pilot lamp, change signal lamp.Signal lamp is comprised of three parts: digital modulation, signal lamp (LED is arrowhead-shaped), track pilot lamp (changeable driveway type)

Table 5 dynamic signal indicating lamp data structure

Dynamic signal indicating lamp operation rule, flow process as shown in Figure 3.

XID section sign green light opens bright, and green light is lighted function of time Timer (GreenTime), and countdown is that 0 green light stops; XID section sign amber light opens bright, and amber light is lighted function of time Timer (YellowTime), and countdown is that 0 amber light stops; XID section sign red light opens bright, and red light is lighted function of time Timer (RedTime), and countdown is that 0 red light stops.

Definition class DynamicSignal, build member function ChangeToSignalLoc () and adjust signal lamp position, member function ChangeToSignalEx () deletes or restoring signal pilot lamp, ChangeToTime () adjusts respectively lighting between countdown of red light, green light and amber light, realizes the provisional and permanent dynamic adjustment of signal lamp key element.

For track, xID Y-direction section, n ₁individual left turn lane represents with GYR look left arrow band, n ₂individual compact car fast direct runway represents with GYR look two fine rule bands, n ₃individual large car compact car at a slow speed Through Lane represents with GYR look wide dotted line band, n ₄individual service bus Through Lane represents with GYR look wide band, n ₅individual right-turn lane represents with GYR look right arrow band, n ₆individual Emergency Vehicle Lane represents with red single thin line band, n ₁+ n ₂+ n ₃+ n ₄+ n ₅+ n ₆=LanesNum.

Dynamic signal indicating lamp model is able to programme, by changing state parameter, such as lighting the time of red greenish-yellow grade, at crossing, add or remove signal lamp, can adjust whole traffic circulation flow, optimize traffic flow structure, seek optimum traffic circulation programme.

S2-5: build dynamic road Sign Board model, mainly consider to affect the Sign Board of urban road operation, as shown in table 6, can add and deletion road sign board according to realistic simulation picture library adjustment dynamic state of parameters.

Table 6 dynamic road Sign Board data structure

Definition class DynamicSign, build subfunction ChangeToSignEx () deletion or recover different kinds of roads Sign Board, member function ChangeToSignLimitV () adjusts the maximum speed limit value of speed limit signboard, realizes the provisional and permanent dynamic adjustment of road sign board key element.

S2-6: build dynamic road and connect separation facilities model, comprise dynamic flyover model, Dynamic Vehicle road vector cut-off rule model, dynamic isolation hurdle model and dynamically stop line model, can adjust dynamic state of parameters interpolation and deletion facility, change shape according to realistic simulation picture library.

Table 7 dynamic road connects separation facilities data structure

Definition class DynamicFacility, build member function ChangeToOverpassType () change viaduct type, member function ChangeToSplitLineType () change vector cut-off rule type, subfunction ChangeToFacilityEx () deletes or recovers different kinds of roads and connects separation facilities, subfunction ChangeToFacilityLength () adjusts the length that different kinds of roads connect separation facilities, the value of StopLineLength and BarrierLength distributes and retrained by RoadWidth and RoadLength in DynamicRoadNet class, subfunction ChangeToFacilityLoc () adjusts the position that different kinds of roads connect separation facilities, realize the provisional and permanent dynamic adjustment that road connects separation facilities key element.

S2-7: build GIS traffic network factor vector figure.According to GIS traffic network polar plot, according to dynamic traffic road network urban road feature model, build GIS traffic network factor vector figure.By the mark scanning of GIS traffic network polar plot structure is identified, the similar feature model of correspondence is recalled, the method of adjusting by automatic Fitting and human assistance, the method that even full artificial fitting adjusts, in the 4th layer building GIS traffic network factor vector figure, this layer of all the elements and the data that figure comprises following each model visualization key element.For the convenience of applying, the figure in the vehicle operating model in this layer of figure can generate mapping subgraph depending on changing content.

Step S3: according to the environmental element (traffic rules, comprehensive impedance and traffic events) of traffic network operation, build dynamic traffic road network operation intervention model, comprise following sub-step,

S3-1: build dynamic traffic rule model, mainly comprise:

(1) red light amber light stops, and green light is set out;

(2) double amber lines, single yellow line, solid line, isolated column can not be crossed over;

(3) dotted line can be crossed over, stop line+amber light, stop line+red parking; Front truck stops, and spacing is stopped to λ rice; Stop line+green light, green light, crosses over stop line, by fixed route, travels.

(4) starting point InitialPoint and StartPoint set out, and start timing;

(5) terminal EndPoint disappears, by initial time StartTime, down time EndTime, each travelling speed Velocity and operating path Path write into Databasce;

(6) vehicle travels according to given speed;

(7) vehicle is by given route running;

(8) vehicle track ,An track pilot lamp indication lanes, parking, lane change in accordance with regulations

S3-2: build dynamic traffic comprehensive impedance model, comprise eight kinds of patterns:

(1) road network structure impedance mode system, its link travel time of the road network of different topology structure is different.

(2) crossing structural impedance mode system, its link travel time of the crossing of different structure is different, comprises the grade crossing of different structure, the flyover crossing of different structure, the crossing stop line structure of different modes etc.

(3) section structural impedance mode system, its link travel times such as the length of different sections of highway, width, lane structure design, People's Bank of China's crossing quantity and structure, section fork situation are different.

(4) vehicle impedance mode system, track flow, vehicle operating mode (general rule operation, irregular operation, information condition operation, the operation of accurate rules) all present different link travel times.

(5) traffic rules mode system, different road rules all present different link travel times.

(6) signal lamp control model system, different signal lamp control modes, intersection wagon flow pass-through mode and the each flow time of letting pass all presents different link travel times.

(7) traffic circulation mode system, different traffic circulation situation (track construction, vehicle road occupying), operational mode (restrict driving management, the setting in unidirectional track are, the setting of two-way lane), arranging of means of transportation all present different link travel times.Operation impedance body owner will comprise following three kinds:

(1) on bicycle road, all vehicles and bicycle, pedestrian mix, and significantly exist and disturb, and two-way wagon flow interacts between different modes of transportation.The principal element of impedance has: unidirectional motor vehicle flow, the one-way trip ability in different flow situation, unidirectional bicycle pedestrian flow, break-in motor vehicle and flow.

(2) on multilane, motor vehicle does not interfere with each other in the same way, between different modes of transportation, exists and disturbs.The principal element of impedance has: motor vehicle flow in the same way, bicycle pedestrian flow in the same way, the traffic capacity in the same way under different flow.

(3) on multilane, between motor vehicle and bicycle pedestrian, do not disturb in the same way, but between motor vehicle and break-in motor vehicle, exist and disturb in the same way.The principal element of impedance has: motor vehicle flow in the same way, break-in motor vehicle flow, the traffic capacity in the same way of different flow.

(8) traffic random impedance system, traffic hazard system, traffic disposal options system, traffic jam mode system all present different link travel times.

These eight kinds of patterns are interrelated, restriction mutually, by simulating the traffic impedance of different systems, quantize impedance index of different nature.

S3-3: build traffic events generation model, mainly comprise section all kinds traffic hazard model, road maintenance event model, certain area burst event (exhibitions, concert, parade, rally etc.) stream of people, traffic flow model, road period warning model etc.

Step S4: build dynamic traffic city road network moving model according to the type of vehicle key element, attribute, distribution and operation characteristic.According to the key element of urban road network operation, build dynamic traffic city road network moving model, comprise following sub-step,

S4-1: build dynamic vehicle feature model.According to type and the attribute of road vehicles, build dynamic vehicle feature model, comprise oversize vehicle series, medium sized vehicle series, dilly series.Car of every generation produces the unique ID of this car simultaneously.This model can be dissimilar according to the random generation of the needs of simulate effect or artificial setting, the vehicle of varying number is in the situation of road traveling.Dissimilar its size of car amount, tonnage, speed limit, the restrictive condition that travels etc. are different.

Table 8 dynamic vehicle factor data structure

Definition class DynamicMotor, build member function CaptureRealData () is recorded in real-time status data respectively in the parameter of table 8 when gathering real time data, be saved to dynamic data base, member function OutputData () exports to the state value of parameter in table 8 vehicle of dry run when simulating vehicle moves.

S4-2: build dynamic vehicle area of space distributed model.According to community in urban areas, functional architecture distribution state data, according to results such as vehicle registration address dates, build dynamic vehicle area of space distributed model.Divide traffic zone, set up the quantitative relationship of volume of traffic conversion between each traffic zone, simulate type of vehicle, presence time, garrison quantity, travel time, the trip quantity of various types of vehicles between each traffic zone, and consider the initial and terminal time of dissimilar vehicle.This model can be generated by actual vehicle distribution statistics storehouse, also can be produced by the city distributed architecture matching based on community, institutional settings, factory and enterprise, school, commercial network, social event.

S4-3: the distributed model that builds Forecast of Urban Traffic Flow.According to the processing of the spatio-temporal distribution data to vehicle driving, build the distributed model of Forecast of Urban Traffic Flow.Include the discharge model distributing by the commuter time, have the discharge model building by the rule of going on a journey festivals or holidays, have the magnitude of traffic flow distributed model occurring by special season (university report for work season, spring outing autumn outing season etc.).

S4-4: build dynamic city vehicle moving model.According to vehicle feature model, dynamic vehicle areal distribution model, dynamic vehicle flow distribution model, build dynamic city vehicle moving model.What this model had comprised vehicle opens initial point to the definition algorithm of destination node, can add up each car in working time, path and the speed on road surface, simulates wagon flow total amount and the variation tendency of the trip feature of dissimilar vehicle and areal distribution, every road.Each feature model based on having built, by carrying out vehicle operating

Generate and bury in oblivion the operation that realizes traffic network vehicle in the mutual scheduling of module ，Yu control center model.

Vehicle operating generates and buries in oblivion the nucleus module that module is dynamic city vehicle moving model, and its major function step comprises:

(1) according to the constraint condition of above-mentioned each model, gather comprehensive vehicle operating parameters, generate all driving traces that vehicle satisfies condition;

(2) with control center's model interactive instruction, according to new constraint condition, path planning, generates new optimization driving trace again;

(3) institute's Constrained and generated data are extracted, pack and be bound in dynamic operation storehouse, by the time period of model requirement (random time or time for balance or fixed time), from starting point, automatically generate vehicle operation, arrive after (service data is submitted to dynamic operation storehouse) registered in destination and automatically bury in oblivion.

Step S5, builds programmable GIS urban road traffic information database and dynamic operation storehouse.According to the recognition result of each element characteristic code and traffic route topological diagram, dynamic traffic road network urban road feature model is associated with corresponding GIS traffic route factor vector figure, build programmable GIS urban road traffic information database and dynamic operation storehouse (figure library structure as shown in Figure 4), and then generate dynamic urban road network structural model.

Step S6, builds control center's model.Demand according to the running state monitoring of road network vehicle operating model, data interaction, operation intervention, man-machine interface operation, builds control center's model.This model can obtain overall traffic information, accepts operational vehicle request, and according to overall operation present situation, calculation optimization route scheme, will move integrated data and bind in request vehicle.Can generate road network overall operation situation map, scalable adjustment.

Control center's model mainly comprises log pattern, realizes the preservation to historical operation, log information; Administration module, realizes the management to all feature model parameter informations, and the functions such as modification, deletion, preservation, inquiry are provided; Monitoring module, realizes the visual tracking to each key element parameter state and variation in conjunction with programmable GIS urban road traffic information database and dynamic operation storehouse; Track module, shows vehicle position and driving trace on GIS road network, can look at any time adjusting data storehouse, checks designated vehicle special time driving trace and magnitude of traffic flow distribution situation, also can derive track data storage.

Control center's model obtains overall traffic information, accepts operational vehicle request, according to overall operation present situation, is this car calculation optimization route scheme, and new operation integrated data is bound in request vehicle;

Control center's model, according to instruction, generates lamp system according to the various optimized algorithms of signal lamp and controls data, bookbinding people lamp system.

Step S7, builds dynamic traffic generation model.According to GIS urban transportation database able to programme and the Runtime Library of each feature model and generation, start monitoring and scheduling center model, realize simulation, the operation and management of dynamic urban transportation.Generation model has Run(to start), Pause(suspends) and Abort(exit) three operations, only, under Pause and Abort state, can revise each feature model parameter, the log pattern of control center's model can record all operations in generating period.

Wherein, build the modeling method of signal lamp model: comprise dynamic crossing signal lamp and dynamic section signal lamp, data structure is as shown in table 5 in text, and dynamic signal indicating lamp operation rule and flow process are as shown in Fig. 3 in accompanying drawing.Can be according to realistic simulation picture library and signal lamp control algorithm able to programme (artificially setting or external data), adjust each belisha beacon status attribute and time parameter thereof, adjust belisha beacon layout parameter, moving law and the method for operation of dynamic appending and erasure signal pilot lamp, change signal lamp.Signal lamp is comprised of three parts: digital modulation, signal lamp (LED is arrowhead-shaped), track pilot lamp (changeable driveway type).

The dynamic structure of urban road network structural model and the construction method in programmable GIS urban road traffic information database and dynamic operation storehouse:

According to the recognition result of sweep vector topological diagram (as topology architectural feature data), feature code data (specific descriptions of above-mentioned each road feature model) comparison with dynamic traffic road network feature model, and dynamic traffic road network urban road feature model is associated with corresponding GIS urban transportation polar plot (this figure forms the existing associated making of data plot that possesses the Big Dipper or the GPS elements of a fix of urban road polar plot and laboratory), build programmable GIS urban road traffic information database and vehicle dynamic Runtime Library structure, and then build and generate dynamic urban road network structural model.

The execution of dynamic traffic road network moving model case.After each traffic feature model has built, the key step of moving a traffic example comprises:

(1) dynamic traffic road network urban traffic network model, dynamic traffic city vehicle model and the initialization of dynamic traffic rule model;

(2) monitoring module of control center's model starts monitoring and each model initialization status information is passed to log pattern record;

(3) build dynamic urban road network structural model and the Dynamic GIS urban transportation road information database of original state;

(4) start dynamic traffic generation model, operation simulation traffic example;

(5) monitoring module of control center is monitored example ruuning situation in real time, and records the information in log pattern;

(6) as need are adjusted traffic circulation, time-out or out of service, according to actual conditions and optimization aim, administration module is revised each feature model parameter, and log pattern records these modification information;

(7) rerun dynamic traffic generation model, dynamically urban road network structural model and dynamic traffic road network information database upgrade mutually, optimize simultaneously;

(8) case completes after operation, can check designated vehicle special time driving trace and magnitude of traffic flow distribution situation by track module, also can derive track data storage, for subsequent analysis.Each model structure relation as shown in Figure 5.

The present invention also provides a kind of dynamic traffic road network urban highway traffic feature model, and described dynamic traffic road network urban highway traffic feature model comprises dynamic traffic road network urban traffic network model, dynamic traffic road network intervention model, dynamic traffic road network moving model and control center's model;

Dynamic vehicle feature model, for dynamically describing the type, attribute etc. of each vehicle key element; Comprise oversize vehicle series, medium sized vehicle series, dilly series.Car of every generation produces the unique ID of this car simultaneously.

Dynamic city vehicle moving model, for dynamically describing the ruuning situation of vehicle, simulating vehicle trip feature and areal distribution, vehicle flow and variation tendency.Each feature model based on having built, generates and realizes operation with burying in oblivion in the mutual scheduling of module ，Yu control center model by carrying out vehicle operating.

Described control center model, for obtaining overall traffic information, accepts operational vehicle request, according to overall operation present situation, is operational vehicle calculation optimization route scheme, and new operation integrated data is bound in request vehicle; According to the various optimized algorithms of signal lamp, generate lamp system and control data, bind into lamp system; Comprise:

Dynamic traffic road network urban road feature model also comprises dynamic traffic generation model, according to GIS urban transportation database able to programme and the Runtime Library of each feature model and generation, start monitoring and scheduling center model, realize simulation, the operation and management of dynamic urban transportation.Generation model has Run(to start), Pause(suspends) and Abort(exit) three operations, only, under Pause and Abort state, can revise each feature model parameter, the log pattern of control center's model can record all operations in generating period.

Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.

Claims

1. a dynamic traffic road network urban road feature model, described dynamic traffic road network urban road feature model comprises dynamic traffic road network urban traffic network model, dynamic traffic road network moving model, dynamic traffic city vehicle model and control center's model;

Dynamic traffic comprehensive impedance model, for dynamically describing and simulate roadlock and the traffic delay factor of traffic circulation; Traffic events generation model, for describing all kinds of traffic hazards and accident;

Described dynamic traffic city vehicle model, for dynamically describing various vehicles and areal distribution, operation characteristic and trend; Comprise:

Dynamic vehicle feature model, for dynamically describing type and the attribute of each vehicle key element; Comprise oversize vehicle series, medium sized vehicle series, dilly series; Car of every generation produces the unique ID of this car simultaneously;

Dynamic vehicle areal distribution model, for dynamically describing the distribution situation of vehicle on each space, traffic zone; Divide traffic zone, set up the quantitative relationship of volume of traffic conversion between each traffic zone, simulate type of vehicle, presence time, garrison quantity, travel time, the trip quantity of various types of vehicles between each traffic zone, and consider the initial and terminal time of dissimilar vehicle; This model can be generated by actual vehicle distribution statistics storehouse, also can be produced by the city distributed architecture matching based on community, institutional settings, factory and enterprise, school, commercial network, social event;

The distributed model of Forecast of Urban Traffic Flow, for dynamically describing magnitude of traffic flow distribution situation in time; Comprise the discharge model distributing by the commuter time, the discharge model building by the rule of going on a journey festivals or holidays, by the magnitude of traffic flow distributed model occurring special season;

Dynamic city vehicle moving model, for dynamically describing the ruuning situation of vehicle, simulating vehicle trip feature and areal distribution, vehicle flow and variation tendency;

Control center's model, for obtaining overall traffic information, accepts operational vehicle request, according to overall operation present situation, is this car calculation optimization route scheme, and new operation integrated data is bound in request vehicle; According to the various optimized algorithms of signal lamp, generate lamp system and control data, bookbinding people lamp system; Comprise:

Log pattern, realizes the preservation to historical operation, log information;

2. dynamic traffic road network urban road feature model according to claim 1, it is characterized in that, dynamic traffic road network urban road feature model also comprises dynamic traffic generation model, be used for according to GIS urban transportation database able to programme and the Runtime Library of each feature model and generation, start monitoring and scheduling center model, realize simulation, the operation and management of dynamic urban transportation.

3. a dynamic traffic road network urban road feature model modeling method, comprises the following steps:

(2) the GIS urban traffic road polar plot generating according to urban traffic road topological diagram builds dynamic traffic road network urban traffic network model;

(3) according to the traffic rules, comprehensive impedance and the traffic events that affect traffic circulation, build dynamic traffic road network intervention model, comprise following methods and step:

(3.2) according to the roadlock factor in traffic circulation, according to traffic delay factor, build dynamic traffic comprehensive impedance model, while being hampered for vehicle, dynamically describing and simulate roadlock and the traffic delay factor of traffic circulation;

(3.3) according to the kind of traffic hazard and accident, build traffic events generation model, for describing all kinds of traffic hazards and accident;

(4) according to the type of vehicle key element, attribute, distribution and operation characteristic, build dynamic traffic city operations model;

(5) dynamic traffic road network urban road feature model is associated with corresponding GIS urban transportation polar plot, build programmable GIS urban road traffic information database and dynamic operation storehouse, and then build and generate dynamic urban road network structural model;

(6) build control center's model, mainly comprise log pattern, for realizing the preservation to historical operation, log information; Administration module, for realizing the management to all feature model parameter informations, provides the functions such as modification, deletion, preservation, inquiry; Monitoring module, for realizing the visual tracking to each key element parameter state and variation in conjunction with programmable GIS urban road traffic information database and dynamic operation storehouse; Track module, for showing vehicle position and driving trace on GIS road network, can look into adjusting data storehouse at any time, checks designated vehicle special time driving trace and magnitude of traffic flow distribution situation, also can derive track data storage;

4. dynamic traffic road network urban road feature model modeling method according to claim 3, is characterized in that step 2) comprise the following steps,

(2.1) according to urban traffic road topological diagram, build dynamic road net model, described dynamic road net model is used for representing road type and direction; Described dynamic road net model comprises dynamic one-way road road, dynamic two ways road, and dynamic bend, in model, road adopts the elastic construction that section splicing extends, and joint employing stretch mode is docked; Described road all has unique data structure, and can be according to realistic simulation picture library by adjusting parameter change road shape and direction; The parameter that described road comprises has:

(2.2) according to urban traffic road topological diagram, build dynamic intercommunication crossing model, comprise the dynamic cross junction that connects one-way road road and two ways road, dynamic T-shaped crossing, Dynamic Annular crossing and dynamic humanoid crossing; The equal setting party in each crossing, to lane line, all has unique data structure, and can adjust parameter change intersection shape and direction according to realistic simulation picture library.The parameter that described crossing comprises has:

(2.3) according to urban traffic road topological diagram, build dynamic pedestrian passageway line model, diatom is crossed by People's Bank of China can adjust parameter change position, dynamic appending and deletion according to realistic simulation picture library; The parameter that diatom comprises is crossed by described People's Bank of China to be had:

(2.4) according to urban traffic road topological diagram, build dynamic signal indicating lamp model, comprise dynamic crossing signal lamp and dynamic section signal lamp,, can adjust that dynamic state of parameters adds and the operation of erasure signal pilot lamp, change pilot lamp according to realistic simulation picture library; Signal lamp is comprised of three parts: digital modulation, signal lamp (LED is arrowhead-shaped), track pilot lamp (changeable driveway type).The parameter that described signal lamp comprises has:

(2.5) according to urban traffic road topological diagram, build dynamic road Sign Board model, the main Sign Board of considering to affect urban road operation, Sign Board adds and deletes by adjusting dynamic state of parameters according to realistic simulation picture library class; The parameter that described Sign Board comprises has:

(2.6) according to urban traffic road topological diagram, build dynamic road and connect separation facilities model, comprise dynamic flyover model, Dynamic Vehicle road vector cut-off rule model, dynamic isolation hurdle model and dynamically stop line model, can adjust dynamic state of parameters interpolation and deletion facility, change shape according to realistic simulation picture library.

5. dynamic traffic road network urban road feature model modeling method according to claim 3, it is characterized in that, (4.1) build dynamic vehicle feature model according to the type of vehicle key element and attribute, comprise oversize vehicle series, medium sized vehicle series, dilly series.Car of every generation produces the unique ID of this car simultaneously; This model can be dissimilar according to the random generation of the needs of simulate effect or the setting of thinking, the vehicle of varying number is in the situation of road traveling;

(4.3) according to urban traffic control traffic circulation database data statistics, build the distributed model of Forecast of Urban Traffic Flow, comprise the discharge model distributing by the commuter time, the discharge model building by the rule of going on a journey festivals or holidays, by the magnitude of traffic flow distributed model occurring special season;

(4.4) according to the data of take in urban traffic network model, vehicle feature model, vehicle distributed model and vehicle flow model, be basis, according to the setting of simulated target and demand, build dynamic city vehicle moving model, this model can be added up each car in working time, path and the speed on road surface, simulates wagon flow total amount and the variation tendency of the trip feature of dissimilar vehicle and areal distribution, every road; Each feature model based on having built, generates and realizes operation with burying in oblivion in the mutual scheduling of module ，Yu control center model by carrying out vehicle operating.

6. dynamic traffic road network urban road feature model modeling method according to claim 5, is characterized in that step 4.4) described in vehicle operating generate and the construction method of burying in oblivion module:

(a) according to the constraint condition of dynamic traffic road network urban traffic network model, dynamic traffic road network intervention model, dynamic traffic road network moving model, gather comprehensive vehicle operating parameters, generate all driving traces that vehicle satisfies condition;

(b) with control center's model interactive instruction, according to new constraint condition, path planning, generates new optimization driving trace again;

(c) institute's Constrained and generated data are extracted, pack and be bound in dynamic operation storehouse, by the time period of model requirement, from starting point, automatically generate vehicle operation, arrive after register destination and automatically bury in oblivion.

7. dynamic traffic road network urban road feature model modeling method according to claim 3, it is characterized in that, also comprise the step that builds dynamic traffic generation model, according to GIS urban transportation database able to programme and the Runtime Library of each feature model and generation, start monitoring and scheduling center model, realize simulation, the operation and management of dynamic urban transportation; Described generation model has startup, suspends and exits three modes of operation, only, under time-out and exit status, can revise each feature model parameter, and the log pattern of control center's model can record all operations in generating period.