Regional traffic load calculation method and system for multiple traffic scheme comparison

Abstract

The present application discloses a method and system for calculating regional traffic load for multiple traffic scheme comparison. The method proposed in the present application includes: establishing a traffic basic model based on regional traffic basic data; establishing a traffic scheme information table based on a set of road section rules of a traffic scheme; fusing the traffic basic model and the traffic scheme information table to form a traffic simulation model for the traffic scheme; and performing simulation calculation based on the traffic simulation model to determine the traffic load index for the traffic scheme. By simplifying the modification of the traffic simulation model to the modification of the traffic scheme, the modeling efficiency of the traffic simulation model is improved.

Description

Technical Field

[0001] The present application relates to the technical field of road traffic organization and management, and more specifically, to a method and system for calculating the load of a regional road traffic network. Background Art

[0002] With the development of urbanization and the increase in the number of motor vehicles in my country, the problem of road traffic congestion has become increasingly prominent, restricting the improvement of urban operation efficiency. In the past, relevant departments often tried to solve the above traffic congestion problems by vigorously promoting road construction. However, this solution usually fails to achieve the expected goal of alleviating traffic congestion. Instead, it increases the travel distance and time cost of vehicles to a certain extent, causing greater burdens on society and the environment.

[0003] Without blindly carrying out road construction, traffic plans can be evaluated by establishing traffic simulation models to optimize traffic management planning and conduct real-time traffic control. Generally, the established traffic simulation model integrates various parameters related to actual traffic conditions in order to better reflect the actual traffic conditions and make the most accurate evaluation. In the existing methods of evaluating traffic plans through traffic simulation models, on the one hand, the traffic simulation model is an inseparable whole. Each time the traffic plan is updated or multiple traffic plans are compared, it is necessary to independently model each traffic plan (or new traffic plan), which is labor-intensive and inefficient. It is difficult to make immediate decisions for immediate adjustments to traffic plans, and it is even more difficult to achieve real-time traffic control. On the other hand, the traffic simulation model relies heavily on the local deployment of software, which increases the overall cost. In addition, the establishment of the traffic simulation model will also be affected by the deviation in the understanding or setting of the model during each modeling process, so that the models established by different individuals according to the unified standard may also have unexpected deviations, affecting the results of the comparison of traffic plans.

[0004] There is an urgent need to improve the existing method of evaluating traffic plans by establishing traffic simulation models in order to achieve a more efficient and accurate evaluation of traffic plans. Summary of the invention

[0005] In order to at least partially solve the above problems, the present application proposes a method and system for calculating regional traffic load for comparison of multiple traffic schemes.

[0006] According to one aspect of the present application, a method for calculating regional traffic load is proposed. The method comprises the following steps: establishing a traffic basic model based on regional traffic basic data; establishing a traffic plan information table based on a set of road section rules of a traffic plan; fusing the traffic basic model and the traffic plan information table to form a traffic simulation model for the traffic plan; and performing simulation calculation based on the traffic simulation model to determine a traffic load index for the traffic plan.

[0007] Preferably, the traffic scheme information table is formed by integrating a basic information table and the road section rule set, wherein the basic information table is derived from the traffic basic model.

[0008] This preferred technical solution further decomposes the traffic plan information table into the basic information table and the road section rule set, further improving the modeling efficiency of the traffic simulation model, wherein one basic information table can be merged with multiple road section rule sets to form multiple traffic plan information tables.

[0009] Preferably, each road segment rule in the road segment rule set corresponds to a road traffic attribute for at least one road segment.

[0010] Preferably, the road segment rule is a natural language sentence with specific morphemes and rules.

[0011] Preferably, the road traffic attribute includes at least one of the following: two-way traffic state, prohibited traffic state, traffic direction, traffic capacity, design speed and impedance coefficient.

[0012] Preferably, the basic traffic data includes community and road network topology data, community traffic generation and attraction volume, and basic road attributes, wherein the basic road attributes include number, name, length, designed travel direction, designed travel time, designed travel capacity, designed travel speed, traffic impedance coefficient, existing distributed flow, and at least one of the connecting rod judgment conditions.

[0013] Preferably, the traffic basic model includes a community layer, a road network layer and a node layer for connecting the community layer and the road network layer for describing travel demand; and in the step of fusing the traffic basic model and the traffic scheme information table to form a traffic simulation model for the traffic scheme, the traffic simulation model is formed by updating the road traffic attributes corresponding to the road section rule set in the road network layer of the traffic basic model.

[0014] Preferably, the traffic load index includes the average load degree of the road network a and the variance of the road network load degree σ 2 ,in,

[0015]

[0016] Among them, a k represents the average load of the road segment with road grade k,

[0017]

[0018] θ k represents the weight of a road segment with road grade k,

[0019] And θ k satisfy

[0020] represents the variance of the road network load of the road segment with road grade k,

[0021]

[0022] Among them, v i k represents the traffic volume of the ith road segment with road grade k, c i k represents the capacity of the ith road segment with road grade k, l i k represents the length of the i-th road segment with road grade k.

[0023] According to another aspect of the present application, a regional traffic load calculation system is proposed. The system includes a client and a server. The server communicates with the client and is configured to perform the following operations: obtaining a traffic basic model and a traffic scheme information table, wherein the traffic basic model is established based on regional traffic basic data, and the traffic scheme information table is established based on a set of road section rules of a traffic scheme, fusing the traffic basic model and the traffic scheme information table to form a traffic simulation model, and performing simulation calculation based on the traffic simulation model to determine a traffic load index for the traffic scheme.

[0024] Preferably, the client is configured to receive the road segment rule set based on the traffic scheme and send the road segment rule set to the server;

[0025] The server end is also configured to derive a basic information table from the basic traffic model, and merge the basic information table and the road section rule set through a data integration module to form the traffic plan information table.

[0026] Preferably, each road segment rule in the road segment rule set corresponds to a road traffic attribute for at least one road segment.

[0027] Preferably, the road segment rule is a natural language sentence with specific morphemes and rules.

[0028] Preferably, the road traffic attribute includes at least one of the following: two-way traffic state, prohibited traffic state, traffic direction, traffic capacity, design speed and impedance coefficient.

[0029] Preferably, the basic traffic data includes community and road network topology data, community traffic generation and attraction volume, and basic road attributes, wherein the basic road attributes include number, name, length, designed travel direction, designed travel time, designed travel capacity, designed travel speed, traffic impedance coefficient, existing distributed flow, and at least one of the connecting rod judgment conditions.

[0030] Preferably, the traffic basic model includes a cell layer, a road network layer, and a node layer for connecting the cell layer and the road network layer for describing travel demand. The server is configured to form the traffic simulation model by updating the road traffic attributes corresponding to the road section rule set in the road network layer of the traffic basic model.

[0031] Preferably, the traffic load index includes the average load degree of the road network a and the variance of the road network load degree σ 2 ,in,

[0032]

[0033] Among them, a k represents the average load of the road segment with road grade k,

[0034]

[0035] θ k represents the weight of a road segment with road grade k,

[0036] And θ k satisfy

[0037] represents the variance of the road network load of the road segment with road grade k,

[0038]

[0039] Among them, v i k represents the traffic volume of the ith road segment with road grade k, c i k represents the capacity of the ith road segment with road grade k, l i krepresents the length of the i-th road segment with road grade k.

[0040] The regional traffic load calculation method and system of the present application constructs a traffic simulation model for simulation calculation by fusing the basic model with the traffic scheme information table. Compared with the modification or reconstruction process of the traffic simulation model for simulation calculation in the prior art, the present application only needs to modify or update the traffic scheme information table, which greatly improves the efficiency of establishing traffic simulation models for different traffic schemes, can make instant quantitative decisions for instant adjustments to traffic schemes, and can achieve real-time control of traffic. In addition, by using the basic model and the traffic scheme information table to construct the traffic simulation model, the fusion operation of the traffic simulation model can be moved to the server, without the need to locally deploy professional software on each client, and when the same basic model is used for all clients, the adverse effects of localization deviation can be reduced.

[0041] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings constituting a part of the present application are used to provide a further understanding of the present application, and the schematic implementation modes and descriptions of the present application are used to explain the present application. In the accompanying drawings:

[0043] Figure 1 A schematic flow chart of a method for calculating regional traffic load is shown;

[0044] Figure 2 The structural diagram of the regional traffic load calculation system is shown;

[0045] Figure 3 An exemplary road segment rule structure is shown;

[0046] Figure 4 An exemplary regional traffic load calculation system operation interface is shown; and

[0047] Figure 5 An exemplary regional traffic load calculation system result display interface is shown. DETAILED DESCRIPTION

[0048] In this application, "region" refers to the geographical range covered by the load calculation, such as a city, a street, an overpass, or an arbitrary geographical range set manually, and the size of the range is not limited.

[0049] In this application, "traffic load" refers to the ratio of actual road traffic volume to road capacity (traffic capacity), and is usually used to measure the operating pressure and congestion level of transportation infrastructure.

[0050] In this application, "fusion" refers to the process of computing and arranging at least two sets of data to form a new set of data. The computing and arranging methods used for different fusion operation objects may be different. Therefore, even if the same term "fusion" is used for different data objects in this application, the corresponding computing and data arranging methods do not have to be the same.

[0051] The technical solution of the present application will be described in detail below with reference to the accompanying drawings.

[0052] Figure 1 A schematic flow chart of a method for calculating regional traffic load according to the present application is shown.

[0053] like Figure 1 As shown, the regional traffic load calculation method 100 includes steps S110 to S140.

[0054] In step S110, a basic traffic model is established based on the basic traffic data of the region.

[0055] Generally, traffic basic data corresponds to long-term stable data in the model that depends on regional planning, road design, population size, etc., and the probability of these data changing significantly is low within a typical calculation or evaluation cycle. In some embodiments of the present application, traffic basic data may include community and road network topology data, community traffic generation and attraction, and road basic attributes. Among them, the road basic attributes may include at least one of the number, name, length, designed travel direction, designed travel time, designed travel capacity, designed travel speed, traffic impedance coefficient, existing distribution flow, and connecting rod discrimination conditions.

[0056] The traffic basic model established based on traffic basic data with long-term stable characteristics is also stable within a typical evaluation cycle and does not need to be repeatedly updated during each independent evaluation or evaluation modification. Of course, the structure of the traffic basic model may have different structures depending on the tools used to subsequently calculate the traffic load. For example, in some embodiments of the present application, the traffic basic model may include a cell layer, a road network layer, and a node layer for connecting the cell layer and the road network layer. Among them, the cell layer is used to describe travel demand; the road network layer is used to store road attribute information; the node layer is used to connect the cell layer and the road network layer, and after the cell is converted into the centroid on the node layer, it is connected to the road network through a connecting rod.

[0057] In step S120, a traffic plan information table is established based on the road section rule set of the traffic plan.

[0058] In the present application, a road segment rule refers to a rule set for one or more road segments in a region in each traffic scheme, wherein at least one different road segment rule exists between different traffic schemes. In some embodiments, each road segment rule corresponds to a road traffic attribute for at least one road segment. In some embodiments of the present application, the road traffic attribute includes at least one of the following: a two-way traffic state, a prohibited traffic state, a traffic direction, a traffic capacity, a design speed, and an impedance coefficient.

[0059] In some embodiments, the segment rule set can be represented in the form of a vector or an array. Specifically, each component of the vector or array corresponds to a segment rule. Different segment rules are separated by semicolons. When a segment rule adjusts the same attribute of multiple objects at the same time, the components corresponding to the segment rule can be represented as functions of the multiple objects, and each object is separated by a comma.

[0060] In some embodiments, the road segment rules may be natural language sentences with specific morphemes and rules. Figure 3 A schematic diagram showing an example road segment rule structure in this case is shown.

[0061] like Figure 3 As shown, a natural language sentence may consist of four parts, namely, "object", "attribute", "secondary attribute" and "value". In some embodiments, the two parts of "secondary attribute" and "value" may not be set.

[0062] In this setting, the natural language sentence segment rule can be expressed as:

[0063] Natural language sentence segment rule = object + attribute (+ secondary attribute) (+ value)

[0064] Among them, "object" refers to the road section, which is represented by the road section ID; "attribute" refers to the name of the attribute that needs to be modified; "secondary attribute" is a supplement to the "attribute", and the two together determine the attribute that needs to be modified; "value" refers to the specific value that needs to be modified.

[0065] For example: "The traffic direction of sections 1 and 12 is from west to east", "The traffic capacity of section 21 is 600 from south to north; sections 32 and 51 are prohibited from passing."

[0066] In some embodiments of the present application, the traffic scheme information table is formed by integrating the basic information table derived from the traffic basic model and the road segment rule set.

[0067] In some embodiments of the present application, the basic information table can be a standard data format file established according to the content of the traffic basic model, in which fields related to the road attributes corresponding to the section rule set are reserved, and these fields can preferably be set to default values, such as 0. In some embodiments, the basic information table can include index fields and specific value spaces for traffic scheme-related data in the traffic simulation model. In this case, the fusion process of the basic information table and the section rule set corresponds to the process of filling the road attribute information corresponding to the section rule set into the reserved fields in the standard format file.

[0068] In this embodiment, the traffic plan information table is equivalent to filling the traffic plan information represented by the road segment rule set into the basic information table, and the resulting computer program can read the data file.

[0069] In step S130, the traffic basic model and the traffic scheme information table are integrated to form a traffic simulation model for the traffic scheme.

[0070] In this application, the traffic simulation model refers to a computable model that can be simulated and calculated by an appropriate calculation module to evaluate the traffic load. The form or structure of the traffic simulation model may be different depending on the calculation module used.

[0071] In some embodiments of the present application, the traffic basic model may correspond to the fixed data part of the traffic simulation model (computable model), and the traffic scheme information table may correspond to the variable data part thereof. The two may be combined to generate a traffic simulation model that can be directly used for calculation.

[0072] In the above steps of the present application, the process of fusing two parts of data is described, wherein the fusion rule may be the inverse operation of separating the traffic simulation model that can be used for calculation into a fixed part and a variable part. The present application does not limit the specific details of the fusion here, and those skilled in the art can understand that this is related to the computing tools used and the structure of the computable model.

[0073] In some embodiments, the fusion operation in step S130 corresponds to updating corresponding road traffic attributes in the road network layer of the traffic basic model according to the road segment rule set.

[0074] In step S140 , simulation calculation is performed based on the traffic simulation model to determine the traffic load index for the traffic plan.

[0075] As described above, in the present application, the traffic simulation model corresponds to a model that can be calculated for a specific computing tool. In some embodiments of the present application, the calculation output is the traffic volume of each road section. Based on the traffic volume of each road section, combined with the length, road grade and traffic capacity of each road section, the traffic load index for the traffic scheme can be calculated.

[0076] In some embodiments of the present application, the computing tool used in step S140 may be commercial or self-developed computing software and a combination thereof, for example, it may be a combination of TransCAD software and GISDK secondary development software.

[0077] Traffic load indicators can be used to evaluate and compare traffic plans. By comparing traffic load indicators for different traffic plans and comprehensively considering the mean and variance of road network load, a better traffic plan can be obtained.

[0078] In some embodiments of the present application, the traffic load index includes the average network load a and the network load variance σ 2 ,in,

[0079]

[0080] Among them, a k represents the average load of the road segment with road grade k,

[0081]

[0082] θ k represents the weight of a road segment with road grade k,

[0083] And θ k satisfy

[0084] represents the variance of the road network load of the road segment with road grade k,

[0085]

[0086] Among them, v i k represents the traffic volume of the ith road segment with road grade k, c i k represents the capacity of the ith road segment with road grade k, l i k represents the length of the i-th road segment with road grade k.

[0087] Figure 2A schematic diagram of the structure of the regional traffic load calculation system 200 is shown, in which the data flow between the modules is also exemplarily indicated.

[0088] In the present application, the regional traffic load calculation system 200 is a system that can be used to implement the regional traffic load calculation method 100, and its form can be a hardware system or a comprehensive system of hardware and software. Figure 2 As shown, the regional traffic load calculation system 200 includes a client 200A and a server 200B. The server 200B can communicate with the client 200A. In some embodiments, the server 200B may include multiple modules for implementing different operations, such as a data integration module 210, a model management module 220, and a simulation calculation module 230.

[0089] In some embodiments of the present application, the server 200B may be configured to obtain (for example, through the data integration module 210) a traffic basic model 2100 and a traffic scheme information table, wherein the traffic basic model 2100 is established based on the traffic basic data of the considered area, and the traffic scheme information table is established based on the road segment rule set of the considered traffic scheme.

[0090] In some embodiments, the basic traffic data of the considered area is retrieved from a database or provided to the server 200B by a user with certain permissions (eg, an administrator).

[0091] In some embodiments, the basic traffic data includes community and road network topology data, community traffic generation and attraction volume, and basic road attributes, wherein the basic road attributes include number, name, length, designed travel direction, designed travel time, designed travel capacity, designed travel speed, traffic impedance coefficient, existing distributed flow, and at least one of the connecting rod judgment conditions.

[0092] In some embodiments, the modeler needs to establish the basic traffic model 2100 based on the basic traffic data. Because the basic traffic model 2100 is established based on the basic traffic data with long-term stable characteristics, it is stable within a typical evaluation cycle and does not need to be repeatedly updated during each independent evaluation or evaluation modification process. Therefore, the modeler only needs to model the basic traffic model 2100 once within a typical evaluation cycle.

[0093] In some embodiments, the traffic basic model 2100 includes a cell layer, a road network layer, and a node layer for connecting the cell layer and the road network layer. The cell layer is used to describe travel demand; the road network layer is used to store road attribute information; the node layer is used to connect the cell layer and the road network layer. After the cell is converted into a centroid on the node layer, it is connected to the road network through a connecting rod.

[0094] In some embodiments, the specific process of establishing the traffic basic model 2100 is as follows:

[0095] ——First, according to the current situation of the target area and the superior planning, the regional road network is built in TransCAD software according to the forecast year, and the number, name, length, design direction of travel, design travel time, design capacity, design speed, traffic impedance coefficient, existing distribution flow and connecting rod judgment conditions of the road section are set;

[0096] - Secondly, divide the districts according to the land use parcels, set the district number, name, initial traffic generation, initial traffic attraction, generation volume, balanced traffic generation, and balanced traffic attraction fields, and calculate the initial traffic generation volume according to the land use nature and area of ​​the traffic district;

[0097] ——Finally, the cell centroid is set at the node layer, and a connecting rod is generated based on the cell centroid to connect the centroid and the road network.

[0098] In some embodiments of the present application, the server side 200B is also configured to export a basic information table from the traffic basic model 2100, and further merge the exported basic information table and the obtained road segment rule set through, for example, the data integration module 210 to form a traffic scheme information table, thereby realizing the above operation of establishing a traffic scheme information table based on the road segment rule set of the traffic scheme under consideration.

[0099] In other embodiments of the present application, the traffic plan information table is prepared or inputted locally by the plan designer on the client 200A, and the client 200A further sends the obtained traffic plan information table to the server 200B. In this way, the server 200B directly receives the traffic plan information table without generating the traffic plan information table through the fusion operation of the data integration module 210.

[0100] In some embodiments, the road segment rule set of the traffic solution under consideration is received by the client 200A and then sent to the server 200B. The road segment rule set can be directly input by the user at the client 200A through keyboard, voice, touch, etc.

[0101] In some embodiments, the road segment rule set forms different traffic plans through different descriptions of road traffic attributes in the area. Because the information is entered in natural language, the plan designers can directly pass the traffic plan information to the software system without relying on modelers.

[0102] In some embodiments, the segment rules in the segment rule set refer to the rules set for one or more segments in the area in each traffic plan. Each segment rule corresponds to a road traffic attribute for at least one segment and is a natural language statement with specific morphemes and rules.

[0103] In some embodiments, the road traffic attribute corresponding to the road segment rule includes at least one of the following: two-way traffic state, prohibited traffic state, traffic direction, traffic capacity, design speed and impedance coefficient.

[0104] In some embodiments, the fusion operation performed by the data integration module 210 is specifically implemented as follows: based on the received road segment rule set, the basic information table is modified to generate a traffic plan information table.

[0105] Furthermore, in some embodiments of the present application, the server side 200B may also be configured to (for example, through the model management module 220 ) merge the traffic basic model 2100 and the traffic scheme information table to form a traffic simulation model 2200 .

[0106] In some embodiments, the model management module 220 can be a secondary development program based on the GISDK platform. Based on the traffic plan information table generated by the data integration module 210, it modifies the traffic plan related data in the traffic basic model 2100 established by the modeler, and generates a traffic simulation model 2200 for the traffic plan.

[0107] Furthermore, in some embodiments of the present application, the server side 200B may also be configured to perform simulation calculations based on the traffic simulation model 2200 (eg, through the simulation calculation module 230) to determine a traffic load index for the traffic scheme under consideration.

[0108] In some embodiments, the simulation calculation module 230 can also be a secondary development program based on the GISDK platform. It is based on the traffic simulation model 2200 generated by the model management module 220, and calls the simulation calculation engine (such as the macro model simulation engine TransCAD Engine or the micro model simulation engine TransModeler Engine) through the API interface of the simulation software to perform simulation calculations.

[0109] In some embodiments, the regional traffic load calculation system 200 further calculates the regional traffic load index based on the simulation calculation results obtained by the simulation calculation module 230. The traffic load index includes the average load degree a of the road network and the variance σ of the road network load degree. 2 ,in,

[0110]

[0111] Among them, a k represents the average load of the road segment with road grade k,

[0112]

[0113] θ k represents the weight of a road segment with road grade k,

[0114] And θ k satisfy

[0115] represents the variance of the road network load of the road segment with road grade k,

[0116]

[0117] Among them, v i k represents the traffic volume of the ith road segment with road grade k, c i k represents the capacity of the ith road segment with road grade k, l i k represents the length of the i-th road segment with road grade k.

[0118] The following will be combined Figure 4 and Figure 5 Take a regional traffic plan optimization project in Beijing as an example to further illustrate. Figure 4 shows an exemplary regional traffic load calculation system operation interface, Figure 5 An exemplary regional traffic load calculation system result display interface is shown.

[0119] In this example, it is necessary to determine the regional traffic operation status after a road section is adjusted from one-way traffic to two-way traffic. Traditional methods can only use empirical qualitative analysis, or invest a lot of experience and time to adjust the model and then perform simulation calculations. By adopting the technical solution of this application, the model can be adjusted in real time according to the modification of the traffic plan and simulation calculations can be performed, thereby improving the accuracy and efficiency of decision-making.

[0120] In this example, the regional traffic load calculation system is a software system based on the WEB architecture, including a client and a server.

[0121] like Figure 4 As shown, the scheme designer can adjust the traffic simulation model and simulation calculation parameters in real time through the client web browser. The scheme designer only needs to input the road section rule set "two-way traffic status of xx road" to complete the adjustment of the traffic simulation model.

[0122] like Figure 5As shown, after the calculation is completed, the scheme designer can view the calculation results in real time in the browser, compare the traffic load indicators for different traffic schemes, and comprehensively consider the mean and variance of the road network load to obtain the optimal traffic scheme.

[0123] The specific traffic load index calculation results are as follows:

[0124] Table 1

[0125]

[0126]

[0127] From the calculation results of the above indicators, it can be concluded that the load mean and variance of the two-way traffic plan for this section are better than those of the one-way counterclockwise traffic plan, and the two-way traffic plan should be adopted.

[0128] The preferred embodiments of the present application are described in detail above; however, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, a variety of simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the protection scope of the present application.

[0129] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not further describe various possible combinations.

[0130] In addition, the various implementation modes of the present application may be arbitrarily combined, and as long as they do not violate the concept of the present application, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A method for calculating regional traffic load for multiple traffic scheme comparison, characterized in that: The method comprises the following steps: Establish a basic transportation model based on the basic transportation data of the region; Based on the road segment rule set of the traffic plan, a traffic plan information table is established, wherein the road segment rules in the road segment rule set are rules set for one or more road segments in the area in each traffic plan, and the traffic plan information table is formed by integrating a basic information table and the road segment rule set, and the basic information table is derived from the traffic basic model; Merging the traffic basic model and the traffic scheme information table to form a traffic simulation model for the traffic scheme, wherein the traffic basic model corresponds to a fixed data portion in the traffic simulation model, and the traffic scheme information table corresponds to a variable data portion in the traffic simulation model; and A simulation calculation is performed based on the traffic simulation model to determine a traffic load index for the traffic plan.

2. The method for calculating regional traffic load according to claim 1, characterized in that: Each road segment rule in the road segment rule set corresponds to a road traffic attribute for at least one road segment.

3. The method for calculating regional traffic load according to claim 2, characterized in that: The road segment rules are natural language sentences with specific morphemes and rules.

4. The method for calculating regional traffic load according to claim 2, characterized in that: The road traffic attribute includes at least one of the following: two-way traffic state, prohibited traffic state, traffic direction, traffic capacity, design speed and impedance coefficient.

5. The method for calculating regional traffic load according to any one of claims 1 to 4, characterized in that: The basic traffic data include community and road network topology data, community traffic generation and attraction volume, and basic road attributes, wherein the basic road attributes include number, name, length, designed travel direction, designed travel time, designed travel capacity, designed travel speed, traffic impedance coefficient, existing distributed flow, and at least one of the connecting rod judgment conditions.

6. The method for calculating regional traffic load according to any one of claims 1 to 4, characterized in that: The basic traffic model includes a community layer, a road network layer, and a node layer for connecting the community layer and the road network layer for describing travel demand; as well as In the step of merging the traffic basic model and the traffic scheme information table to form a traffic simulation model for the traffic scheme, the traffic simulation model is formed by updating the road traffic attributes corresponding to the road section rule set in the road network layer of the traffic basic model.

7. The method for calculating regional traffic load according to any one of claims 1 to 4, characterized in that: The traffic load index includes the average load degree of the road network and the network load variance ,in, in, Indicates road grade The average load of the road section, Indicates road grade The weight of the road segment, Indicates road grade The road network load variance of the road section is in, Indicates road grade No. The traffic volume of a road section, Indicates road grade No. The traffic capacity of a road section, Indicates road grade No. The length of the road section.

8. A regional traffic load calculation system for multiple traffic scheme selection, characterized in that: The regional traffic load calculation system comprises: Client; and The server side, communicating with the client, is configured as: A basic traffic model is obtained, a basic information table is derived from the basic traffic model, and the basic information table and a road section rule set are integrated through a data integration module to form a traffic scheme information table, wherein the basic traffic model is established based on the basic traffic data of the region, the traffic scheme information table is established based on the road section rule set of the traffic scheme, and the road section rules in the road section rule set are rules set for one or more road sections in the region in each traffic scheme, The traffic basic model and the traffic scheme information table are merged to form a traffic simulation model, wherein the traffic basic model corresponds to the fixed data part in the traffic simulation model, and the traffic scheme information table corresponds to the variable data part in the traffic simulation model, and A simulation calculation is performed based on the traffic simulation model to determine a traffic load index for the traffic plan.

9. The regional traffic load calculation system according to claim 8, characterized in that: The client is configured to receive the road segment rule set based on the traffic solution and send the road segment rule set to the server.

10. The regional traffic load calculation system according to claim 9, characterized in that: Each road segment rule in the road segment rule set corresponds to a road traffic attribute for at least one road segment.

11. The regional traffic load calculation system according to claim 10, characterized in that: The road segment rules are natural language sentences with specific morphemes and rules.

12. The regional traffic load calculation system according to claim 10, characterized in that: The road traffic attribute includes at least one of the following: two-way traffic state, prohibited traffic state, traffic direction, traffic capacity, design speed and impedance coefficient.

13. The regional traffic load calculation system according to any one of claims 8 to 12, characterized in that: The basic traffic data include community and road network topology data, community traffic generation and attraction volume, and basic road attributes, wherein the basic road attributes include number, name, length, designed travel direction, designed travel time, designed travel capacity, designed travel speed, traffic impedance coefficient, existing distributed flow, and at least one of the connecting rod judgment conditions.

14. The regional traffic load calculation system according to any one of claims 8 to 12, characterized in that: The basic traffic model includes a community layer, a road network layer, and a node layer for connecting the community layer and the road network layer for describing travel demand; as well as The server is configured to form the traffic simulation model by updating the road traffic attributes corresponding to the road segment rule set in the road network layer of the traffic basic model.

15. The regional traffic load calculation system according to any one of claims 8 to 12, characterized in that: The traffic load index includes the average load degree of the road network and network load variance ,in, in, Indicates road grade The average load of the road section, Indicates road grade The weight of the road segment, Indicates road grade The road network load variance of the road section is in, Indicates road grade No. The traffic volume of a road section, Indicates road grade No. The traffic capacity of a road section, Indicates road grade No. The length of the road section.

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