Traffic organization assessment method and device for truck passing along middle lane in whole road section

Abstract

The invention provides a method and device for evaluating a traffic organization of a truck passing along a middle lane in a whole road section, and the method comprises the steps: evaluating whether a road condition meets a preset road condition or not, and judging whether the intersection distance along a road and the road traffic composition characteristics meet the preset conditions or not when the preset road condition is met; according to the method, the road section truck flow is collected, whether the truck flow threshold value, the space transformation condition and the traffic saturation degree meet the preset conditions or not is judged, whether the road meets the traffic organization for setting the whole-road-section truck middle lane to pass or not is comprehensively judged, and the judgment method is simple and clear in use condition, convenient, rapid and high in reliability. The invention further provides a traffic organization device for the truck passing along the middle lane. The traffic organization device comprises a road condition judging module, a traffic composition characteristic collecting module, a traffic composition characteristic evaluating module and a lane guiding and indicating device, and is used for evaluating, guiding and indicating the traffic organization for the truck passing along the middle lane in the whole road section.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of road section traffic organization in traffic engineering, and in particular to a traffic organization evaluation method and device for trucks traveling along a middle lane of an entire road section. Background Art

[0002] In recent years, truck traffic has seriously interfered with urban traffic, passenger and truck traffic has been mixed, safety accidents have occurred frequently, and trucks are heavily loaded, slow, and have low traffic efficiency. Trucks driving along the middle lane on the entire road section can effectively solve the safety problem of disorderly driving of trucks, which is very important for improving the traffic capacity and driving safety of the road section.

[0003] In order to achieve passenger and freight separation, it is generally implemented from multiple angles such as infrastructure design, traffic management system and intelligent transportation technology. For example, (1) Physical separation: Setting physical barriers in road design, such as guardrails or green belts to separate passenger lanes and truck lanes. Building special freight channels or logistics parks so that trucks can complete cargo loading and unloading without passing through the city center. (2) Time window management: Implementing truck travel time restrictions, such as prohibiting trucks from entering the city during certain periods of time to reduce traffic pressure during peak hours. (3) Traffic signal optimization: Adjusting the timing of traffic lights to adapt to the speed differences of different types of vehicles to ensure that trucks can pass through intersections more smoothly. Summary of the invention

[0004] In order to solve the safety problem of mixed passenger and freight traffic, the present invention provides a method and device for evaluating the traffic organization of trucks traveling along the middle lane of the entire road section, which is used to evaluate whether the road is suitable for setting up the middle lane for trucks and optimizing related traffic organization. The evaluation method has simple and clear usage conditions, is convenient and fast, and has high reliability.

[0005] A method for evaluating the traffic organization of a truck traveling along a middle lane on a whole road section, characterized by comprising the following steps:

[0006] S01: Determine whether the basic conditions of the proposed entire road section meet the preset road conditions. If yes, execute S02;

[0007] S02: Determine whether the distance between each intersection along the proposed entire road section meets the preset value, and detect whether the road section has the space transformation conditions for setting the middle lane traffic guidance indicator facilities for trucks. If so, execute S03;

[0008] S03: collecting traffic composition characteristics of the proposed entire road section, including the truck flow of the entire road section, the car flow of the entire road section, and the transit truck flow;

[0009] S04: determining whether the traffic composition characteristics of the proposed entire road section meet the preset traffic composition characteristics conditions, and if so, executing S05;

[0010] S05: Check whether the current truck traffic flow of the proposed entire road section is less than or equal to the designed traffic capacity N of the one-way route of the middle lane of each road section a , if satisfied, execute S06;

[0011] S06: Determine whether the truck saturation of the middle lane of each section of the proposed entire road section and the truck saturation of the entrance lane of each intersection are less than or equal to a preset saturation threshold. If so, the proposed entire road section is suitable for setting up a middle lane for trucks to pass through; otherwise, it is not suitable for setting.

[0012] Furthermore, the preset road conditions in S01 are: the road grade is a main road or a secondary road, the number of lanes is six lanes in both directions or more, the width of the motor vehicle lane is greater than 3.5 meters, the cross-section is arranged as four lanes, there are a middle dividing strip and two side dividing strips, and no HOV lane is set on the road section.

[0013] Furthermore, the preset value of the intersection spacing in S02 is: the spacing between each intersection along the line is not less than 200 meters; the space renovation conditions for the traffic guidance facilities in the middle lane of the truck are: there is renovation space for setting up a gantry at the starting and ending points of the section, and there is renovation space for setting up signs and signboards along the section.

[0014] Furthermore, the traffic composition characteristic conditions in S04 are: the proportion of truck flow in the entire road section to the total road section flow is greater than 25%, and the proportion of truck flow in transit in the road section to the truck flow in the road section is greater than 60%, wherein a transit truck refers to a truck vehicle whose starting and ending points are not at the starting and ending points of the road.

[0015] Furthermore, the truck capacity of the one-way route design of the middle lane of each road section in S05 is determined by the following formula:

[0016] N a =N0·γ·η·C·n′

[0017] Where: N a ——Design capacity of one-way route of the road section (pcu / h);

[0018] N0——theoretical capacity of a lane (pcu / h);

[0019] γ——Bicycle impact correction coefficient. When there is a separation strip between the motor vehicle lane and the non-motor vehicle lane, γ=1; when there is no separation strip between the motor vehicle lane and the non-motor vehicle lane, γ=0.85;

[0020] η——Lane width correction coefficient;

[0021] n′——lane number correction factor;

[0022] C——Intersection impact correction coefficient.

[0023] Furthermore, the calculation formulas for the above parameters are as follows:

[0024] 1) Theoretical capacity of a lane N0: N0 = 3600 / t0, t0 is the average headway time (s) of saturated continuous traffic flow.

[0025] By observing the headway time under saturated continuous traffic conditions on urban roads, the average headway time for trucks is 3.696 (s), so the theoretical capacity of trucks in one lane is calculated as 974 pcu / h.

[0026] 2) The lane width correction factor η is determined by the following formula:

[0027]

[0028] Where: W0——width of a motor vehicle lane (m);

[0029] According to the preset road conditions in S01, the lane width correction coefficient η is simplified to:

[0030]

[0031] 3) The lane correction factor n' is determined by the following table:

[0032]

[0033] 4) The intersection impact correction coefficient C is determined by the following formula:

[0034]

[0035] In the formula: s is the intersection spacing (m); C0 is the effective travel time of the intersection, and the signalized intersection is the green-to-signal ratio.

[0036] According to the preset road conditions in S01, the intersection influence correction coefficient C can be simplified as:

[0037] C=C0(0.0013s+0.73)s>200m

[0038] Furthermore, in S06, the preset saturation threshold R includes a preset inlet lane saturation threshold λ1′ and a preset truck dedicated lane section saturation threshold λ2′.

[0039] Furthermore, the single lane saturation λ1 of the intersection is determined according to the truck traffic volume in the middle lane of the section and the traffic capacity of a single lane of the intersection, and the traffic saturation λ2 of the middle lane of the section is determined according to the truck traffic volume in the middle lane of the section and the truck traffic capacity of the one-way route design of the section;

[0040] The calculation formula for equivalent standard car traffic volume is: V e =V∑P i E i ;

[0041] Where: V e is the equivalent standard car traffic volume; V is the unconverted total traffic volume; P i is the percentage of the traffic volume of the i-th type of vehicle in the total traffic volume; E i is the vehicle conversion factor for the i-th type of vehicle; i represents a truck or a car;

[0042] The calculation formula for the traffic capacity of a single lane at an intersection is: Among them C s is the design capacity of a single lane at the intersection, T c is the signal light cycle, t g is the green light time in each cycle of the signal, t0 is the time when the first car starts and passes the stop line after the green light is on, and t i is the average time for vehicles going straight or right to pass the stop line, is the reduction factor;

[0043] The single lane saturation of each intersection is calculated by the following formula:

[0044]

[0045] Where λ1 is the saturation of a single lane at the intersection; V e is the equivalent standard car traffic volume arriving at the entrance per unit time; C s is the traffic capacity of the approach;

[0046] The saturation of the middle lane of the road section is calculated by the following formula:

[0047]

[0048] Among them, λ2 is the saturation of the middle lane of the road section; V e is the equivalent standard car traffic volume arriving at the road section per unit time; N a Design the capacity for the one-way route of this section.

[0049] Furthermore, the preset entrance lane saturation threshold λ1′ is 0.8, and the preset truck lane saturation threshold λ2′ is 0.9;

[0050] When the saturation λ1 of the proposed entrance lane of the road section is less than or equal to 0.8, and the saturation λ2 of the truck dedicated lane is less than or equal to 0.9, the road section is suitable for setting up the middle lane for trucks to pass through the entire road section.

[0051] The present invention also provides a traffic organization device for trucks passing through the middle lane, which is characterized by comprising:

[0052] The road condition judgment module is used to judge whether the current road conditions meet the preset road conditions, whether the intersection spacing along the current road meets the preset intersection spacing conditions, and whether there are space reconstruction conditions for setting up the middle lane traffic guidance indicator facilities for trucks;

[0053] Traffic composition characteristics collection module, used to collect the truck flow, car flow and transit truck flow of the proposed road section;

[0054] The traffic composition characteristics evaluation module is used to: (1) determine whether the collected traffic composition characteristics of the proposed entire road section meet the truck flow ratio conditions for setting up the truck middle lane traffic organization; (2) determine whether the current truck flow of the proposed road section is within the design capacity of the one-way route of the middle lane section; (3) calculate the single-lane saturation of the middle lane at the intersection of the proposed road section and the saturation of the middle lane of the road section, and determine whether it is within the preset entrance lane saturation threshold and the preset truck dedicated lane saturation threshold;

[0055] Lane guidance indicator devices are installed at the starting position of the entire road section and at each intersection to indicate that the middle lane is a dedicated lane for trucks.

[0056] Furthermore, the lane guidance indicator device includes a truck middle lane traffic guidance indicator device arranged at the starting intersection of the total road section. The truck middle lane traffic guidance indicator device includes a gantry, a traffic dynamic display screen, a passenger car / truck driving lane indicator sign, a truck driving lane regulation sign, and a prohibition sign prohibiting trucks from entering the passenger lane;

[0057] Truck lane division signs and passenger car free lane selection signs are installed at the entrances of the entire road section;

[0058] The bus driving signs set up at the exit lanes guide bus drivers to enter the left and right lanes in advance, and guide arrows and text markings are added on the ground;

[0059] Warning signs set up within the road section include prohibition signs prohibiting trucks from entering passenger lanes and signs prompting passenger buses to change lanes in advance by turning left / right.

[0060] The present invention first determines whether the road conditions meet the preset road conditions. If the preset road conditions are met, it determines whether the intersection spacing along the road and the road traffic composition characteristics meet the preset conditions. Then, the truck flow of the road section is collected, and then it is determined whether the truck flow threshold, space transformation conditions, and traffic saturation meet the preset conditions to comprehensively determine whether the road meets the traffic organization requirements for setting up a middle lane for trucks to pass through the entire road section. The use conditions of the above judgment method are concise and clear, convenient and fast, and highly reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Figure 1 The traffic route diagram of a certain road section is applicable to the traffic organization evaluation method for a truck traveling along the middle lane of the entire road section described in the present invention.

[0062] Figure 2 Shown is a schematic diagram of the structure of a traffic guidance indicator device for the middle lane of a truck.

[0063] Figure 3 This is a schematic diagram of the driving guidance scrolling text displayed on the traffic dynamic display screen.

[0064] Figure 4 Schematic diagram of the guidance signs for the truck lane set up on the import road. DETAILED DESCRIPTION

[0065] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0066] The traffic organization evaluation method for trucks traveling along the middle lane of the entire road section of the present invention is characterized by comprising the following steps:

[0067] S01: Determine whether the basic conditions of the proposed entire road section meet the preset road conditions. If so, execute S02. The preset road conditions are: the road grade is a main road or a secondary road, the number of lanes is six lanes in both directions or more than six lanes in both directions, the width of the motor vehicle lane is greater than 3.5 meters, the cross-section is arranged as a four-lane road, there are a middle dividing strip and two side dividing strips, and the road section does not have a HOV lane.

[0068] S02: Determine whether the spacing between intersections along the proposed entire road section meets the preset value, and detect whether the road section has the space modification conditions for setting up the middle lane traffic guidance and indication facilities for trucks. If so, execute S03. The preset value of the intersection spacing is: the spacing between intersections along the road is not less than 200 meters; the space modification conditions for the middle lane traffic guidance and indication facilities for trucks are: the starting and ending points of the road section have the modification space for setting up the gantry, and the road section has the modification space for setting up signs and signboards.

[0069] S03: Collecting the traffic composition characteristics of the proposed entire road section, including the truck flow of the entire road section, the car flow of the entire road section, and the transit truck flow.

[0070] S04: Determine whether the proposed traffic composition characteristics of the entire road section meet the preset traffic composition characteristics conditions. If so, execute S05; the traffic composition characteristics conditions are: the proportion of truck flow in the entire road section to the total road section flow is greater than 25%, and the proportion of truck flow in transit in the road section to the truck flow in the road section is greater than 60%, wherein a transit truck refers to a truck vehicle whose starting and ending points are not at the starting and ending points of the road.

[0071] S05: Check whether the current truck traffic flow of each section of the proposed entire road section is less than or equal to the truck traffic capacity N of the one-way route design of the middle lane of each section. a , if satisfied, execute S06.

[0072] The truck capacity of the one-way route design of the middle lane of each road section is determined by the following formula:

[0073] N a =N0·γ·η·C·n′

[0074] Where: N a ——Design capacity of one-way route of the road section (pcu / h);

[0075] N0——theoretical capacity of a lane (pcu / h);

[0076] γ——Bicycle impact correction coefficient. When there is a separation strip between the motor vehicle lane and the non-motor vehicle lane, γ=1; when there is no separation strip between the motor vehicle lane and the non-motor vehicle lane, γ=0.85;

[0077] η——Lane width correction coefficient;

[0078] n′——lane number correction factor;

[0079] C——Intersection impact correction coefficient.

[0080] The above parameters are determined in the following way:

[0081] 1) Theoretical capacity of a lane N0: N0 = 3600 / t0, t0 is the average headway time of saturated continuous traffic flow (s);

[0082] By observing the headway time under saturated continuous traffic conditions on urban roads, the average headway time for trucks is 3.696 (s), so the theoretical capacity of trucks in one lane is calculated as 974 pcu / h.

[0083] 2) The lane width correction factor η is determined by the following formula:

[0084]

[0085] Where: W0——width of a motor vehicle lane (m);

[0086] According to the preset road conditions in S01, the lane width correction coefficient η is simplified to:

[0087]

[0088] 3) Lane correction coefficient n′:

[0089] When the number of lanes is 1, n'=1; when the number of lanes is 2, n'=1.87; when the number of lanes is 3, n'=2.6; when the number of lanes is 4, n'=3.2;

[0090] 4) The intersection impact correction coefficient C is determined by the following formula:

[0091]

[0092] Where: s—intersection spacing (m); C0—intersection effective travel time, signalized intersection is the green-signal ratio;

[0093] According to the preset road conditions in S01, the intersection influence correction coefficient C can be simplified as:

[0094] C=C0(0.0013s+0.73)s>200m.

[0095] S06: Determine whether the truck saturation of the middle lane of each section of the proposed road section and the truck saturation of each entrance lane of the intersection are less than or equal to the preset saturation threshold. If so, the proposed entire road section is suitable for setting up the middle lane for trucks to pass through the entire section; otherwise, it is not suitable for setting. The preset saturation threshold R includes a preset entrance lane saturation threshold λ1′ and a preset truck-only lane section saturation threshold λ2′. The single lane saturation λ1 of the intersection is determined based on the truck traffic volume in the middle lane of the section and the traffic capacity of a single lane at the intersection, and the traffic saturation λ2 of the middle lane of the section is determined based on the truck traffic volume in the middle lane of the section and the truck traffic capacity of the one-way route design of the section;

[0096] The calculation formula for equivalent standard car traffic volume is: V e =V∑P i E i ;

[0097] Where: V e is the equivalent standard car traffic volume; V is the unconverted total traffic volume; P i is the percentage of the traffic volume of the i-th type of vehicle in the total traffic volume; E iis the vehicle conversion factor for the i-th type of vehicle; i represents a truck or a car;

[0098] The calculation formula for the traffic capacity of a single lane at an intersection is: Among them C s is the design capacity of a single lane at the intersection, T c is the signal light cycle, t g is the green light time in each cycle of the signal, t0 is the time when the first car starts and passes the stop line after the green light is on, and t i is the average time for vehicles going straight or right to pass the stop line, is the reduction factor;

[0099] The single lane saturation of each intersection is calculated by the following formula:

[0100]

[0101] Where λ1 is the saturation of a single lane at the intersection; V e is the equivalent standard car traffic volume arriving at the entrance per unit time; C s is the traffic capacity of the approach;

[0102] The saturation of the middle lane of the road section is calculated by the following formula:

[0103]

[0104] Among them, λ2 is the saturation of the middle lane of the road section; V e is the equivalent standard car traffic volume arriving at the road section per unit time; N a Design the capacity for the one-way route of this section.

[0105] The preset entrance lane saturation threshold λ1′ is 0.8, and the preset truck lane saturation threshold λ2′ is 0.9;

[0106] When the saturation λ1 of the proposed entrance lane of the road section is less than or equal to 0.8, and the saturation λ2 of the truck dedicated lane is less than or equal to 0.9, the road section is suitable for setting up the middle lane for trucks to pass through the entire road section.

[0107] Example:

[0108] Step 1: First, detect the preset road conditions.

[0109] The road is a six-lane bidirectional road with a motor vehicle and non-motor vehicle separation and a central divider. There are no special lanes such as bus lanes and HOV lanes on the road. Bus stops are set up next to the outermost lanes along the road. The maximum distance between adjacent bus stops is less than 500 meters, so the next step of inspection can be carried out.

[0110] Step 2: Detect the intersection spacing along the road.

[0111] The distance between each intersection along the road is shown in Table 1, which is no less than 200 meters, meeting the preset conditions. There are two side dividing strips at the beginning and end of the road section, with reconstruction space for setting up gantry, and there is a middle dividing strip along the road section, with reconstruction space for setting up signs and signboards.

[0112] Table 1 Intersection spacing along the line

[0113]

[0114] Step 3: Collect the truck flow, car flow and section truck flow of the three lanes of the road during the morning peak and off-peak hours in a week. See Table 2 and Table 3 for details.

[0115] Table 2 Truck and car traffic during the morning peak period

[0116] direction Section flow (pcu / h) Car flow rate (pcu / h) Truck traffic (pcu / h) From West to East 630—1008 435—720 195—288 From East to West 351—1641 264—1287 87—354

[0117] Table 3 Truck and car traffic during off-peak hours

[0118] direction Section flow (pcu / h) Car flow rate (pcu / h) Truck traffic (pcu / h) From West to East 396—933 132—345 264—508 From East to West 345—984 135—435 210—503

[0119] Step 4: Detect whether the truck flow on the road meets a preset flow threshold based on the traffic data in step 3.

[0120] The preset road is a six-lane bidirectional road with a motor-non-motorized separation and a central divider. The lane width is 3.5 meters, the green-to-signal ratio at the intersection is 0.6, and the minimum intersection spacing is 200 meters. Therefore, the capacity of one lane of the preset road is 578pcu / h.

[0121]

[0122] The maximum flow rate of trucks on the preset road section is 508pcu / h<578pcu / h, and the next step of judgment can be carried out.

[0123] Step 5: Design a traffic organization plan for trucks in the middle lane of the entire road section, calculate the saturation of the middle lane of trucks in each entrance lane, and determine whether the traffic saturation is less than a preset saturation threshold.

[0124] Table 6 Saturation of truck middle lane section

[0125]

[0126] Table 7 Saturation of entrances at each intersection

[0127]

[0128] The saturation of each entrance lane is less than the threshold, and the preset road can implement a traffic organization plan for trucks to pass through the middle lane of the entire road section.

[0129] In accordance with GB 5768-2022 Road Traffic Signs and Markings, the traffic organization signs and markings for trucks in the middle lane of the entire road section are improved. The specific implementation is as follows.

[0130] 1) Section start and end: A gantry is added at the start and exit of the section, and the gantry is attached with an LED traffic dynamic display screen with scrolling information, combined guidance signs, passenger / truck lane indication signs, truck lane regulations signboards, and prohibition signs for trucks to enter the passenger lane for guidance;

[0131] 2) At intersections: Add lane markings for truck lanes and signs for free lane selection for buses on the entrance lanes; add signposts on the exit lanes to guide bus drivers to enter the left and right lanes in advance, and add guide arrows and text markings on the ground in advance.

[0132] 3) Road section: New warning signs are added, including prohibition signs for trucks to enter passenger lanes and signs for buses to change lanes in advance when turning left or right, to guide bus drivers to choose lanes in advance.

[0133] The embodiments are preferred implementations of the present invention, but the present invention is not limited to the above-mentioned implementations. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essential content of the present invention belong to the protection scope of the present invention.

Claims

1. A method for evaluating the traffic organization of trucks traveling along the middle lane of the entire road section, characterized in that: The following steps are involved: S01: Determine whether the basic conditions of the proposed entire road section meet the preset road conditions. If yes, execute S02; S02: Determine whether the distance between each intersection along the proposed entire road section meets the preset value, and detect whether the road section has the space transformation conditions for setting the middle lane traffic guidance indicator facilities for trucks. If so, execute S03; S03: collecting traffic composition characteristics of the proposed entire road section, including the truck flow of the entire road section, the car flow of the entire road section, and the transit truck flow; S04: determining whether the traffic composition characteristics of the proposed entire road section meet the preset traffic composition characteristics conditions, and if so, executing S05; S05: Check whether the current truck traffic flow of the proposed entire road section is less than or equal to the truck traffic capacity N of the one-way route designed for the middle lane of each road section a , if satisfied, execute S06; S06: Determine whether the truck saturation of the middle lane of each section of the proposed road and the truck saturation of each intersection entrance lane is less than or equal to a preset saturation threshold. If so, the proposed entire road section is suitable for setting the middle lane for trucks to pass through; Otherwise, it is not suitable for setting.

2. The method for evaluating the traffic organization of trucks traveling along the middle lane of the entire road section according to claim 1 is characterized in that: The preset road conditions in S01 are: the road grade is a main road or a secondary road, the number of lanes is six lanes in both directions or more, the width of the motor vehicle lane is greater than 3.5 meters, the cross-section is arranged as four lanes, there are a middle dividing strip and two side dividing strips, and no HOV lane is set on the road section.

3. The method for evaluating the traffic organization of trucks traveling along the middle lane of the entire road section according to claim 1 is characterized in that: The preset value of the intersection spacing in S02 is: the spacing between each intersection along the line is not less than 200 meters; the space renovation conditions for the traffic guidance facilities in the middle lane of the truck are: there is renovation space for setting up a gantry at the starting and ending points of the section, and there is renovation space for setting up signs and signboards along the section.

4. The method for evaluating the traffic organization of trucks traveling along the middle lane of the entire road section according to claim 1 is characterized in that: The traffic composition characteristic conditions in S04 are: the proportion of truck flow in the entire road section to the total road section flow is greater than 25%, and the proportion of truck flow in transit in the road section to the truck flow in the road section is greater than 60%, where a transit truck refers to a truck vehicle whose starting and ending points are not at the starting and ending points of the road.

5. The method for evaluating the traffic organization of trucks traveling along the middle lane of the entire road section according to claim 1 is characterized in that: The truck traffic capacity of the one-way route design with the middle lane of the entire road section in S05 is determined by the following formula: N a =N0·γ·η·C·n′ Where: N a ——Design capacity of one-way route of the road section (pcu / h); N0——theoretical capacity of a lane (pcu / h); γ——Bicycle impact correction coefficient. When there is a separation strip between the motor vehicle lane and the non-motor vehicle lane, γ=1; when there is no separation strip between the motor vehicle lane and the non-motor vehicle lane, γ=0.85; η——Lane width correction coefficient; n′——lane number correction factor; C——Intersection impact correction coefficient. 1) Theoretical capacity of a lane N0: N0 = 3600 / t0, t0 is the average headway time of saturated continuous traffic flow (s); 2) The lane width correction factor η is determined by the following formula: Where: W0——width of a motor vehicle lane (m); 3) Lane correction coefficient n′: When the number of lanes is 1, n'=1; when the number of lanes is 2, n'=1.87; when the number of lanes is 3, n'=2.6; when the number of lanes is 4, n'=3.2; 4) The intersection impact correction coefficient C is determined by the following formula: In the formula: s is the intersection spacing (m); C0 is the effective travel time of the intersection, and the signalized intersection is the green-to-signal ratio.

6. The method for evaluating the traffic organization of trucks traveling along the middle lane of the entire road section according to claim 1 is characterized in that: In S06, the preset saturation threshold R includes a preset inlet lane saturation threshold λ1′ and a preset truck dedicated lane section saturation threshold λ2′.

7. The method for evaluating the traffic organization of trucks traveling along the middle lane of the entire road section according to claim 6 is characterized in that: In S06, the single lane saturation λ1 of the intersection is determined according to the truck traffic volume in the middle lane of the road section and the traffic capacity of the single lane of the intersection, and the traffic saturation λ2 of the middle lane of the road section is determined according to the truck traffic volume in the middle lane of the road section and the truck traffic capacity of the one-way route design of the road section; The calculation formula for equivalent standard car traffic volume is: V e =V∑P i E i ; Where: V e is the equivalent standard car traffic volume; V is the unconverted total traffic volume; P i is the percentage of the traffic volume of the i-th type of vehicle in the total traffic volume; E i is the vehicle conversion factor for the i-th type of vehicle; i represents a truck or a car; The calculation formula for the traffic capacity of a single lane at an intersection is: Among them C s is the design capacity of a single lane at the intersection, T c is the signal light cycle, t g is the green light time in each cycle of the signal, t0 is the time when the first car starts and passes the stop line after the green light is on, and t i is the average time for vehicles going straight or right to pass the stop line, is the reduction factor; The single lane saturation of each intersection is calculated by the following formula: Where λ1 is the saturation of a single lane at the intersection; V e is the equivalent standard car traffic volume arriving at the entrance per unit time; C s is the traffic capacity of the approach; The saturation of the middle lane of the road section is calculated by the following formula: Among them, λ2 is the saturation of the middle lane of the road section; V e is the equivalent standard car traffic volume arriving at the road section per unit time; N a Design the capacity for the one-way route of this section.

8. The method for evaluating the traffic organization of trucks traveling along the middle lane of the entire road section according to claim 7 is characterized in that: The preset entrance lane saturation threshold λ1′ is 0.8, and the preset truck lane saturation threshold λ2′ is 0.9; When the saturation λ1 of the proposed entrance lane of the road section is less than or equal to 0.8, and the saturation λ2 of the truck dedicated lane is less than or equal to 0.9, the road section is suitable for setting up the middle lane for trucks to pass through the entire road section.

9. The traffic organization device for trucks traveling along the middle lane of the entire road section of the method for evaluating the traffic organization of trucks traveling along the middle lane of any one of claims 1 to 8, characterized in that: include The road condition judgment module is used to judge whether the current road conditions meet the preset road conditions, whether the intersection spacing along the current road meets the preset intersection spacing conditions, and whether there are space reconstruction conditions for setting up the middle lane traffic guidance indicator facilities for trucks; Traffic composition characteristics collection module, used to collect the truck flow, car flow and transit truck flow of the proposed road section; The traffic composition characteristics evaluation module is used to (1) determine whether the collected traffic composition characteristics of the proposed entire road section meet the truck flow ratio conditions for setting up the truck middle lane traffic organization; (2) Determine whether the current truck flow on the proposed road section is within the design capacity of the one-way route on the middle lane section; (3) Calculate the saturation of the single lane of the middle lane of the proposed road section intersection and the saturation of the middle lane of the road section, and determine whether it is within the preset saturation threshold of the entrance lane and the preset saturation threshold of the truck lane; Lane guidance indicator devices are installed at the starting position of the entire road section and at each intersection to indicate that the middle lane is a dedicated lane for trucks.

10. The traffic organization device for trucks passing through the middle lane as claimed in claim 9, characterized in that: The lane guidance indicator device includes a truck middle lane traffic guidance indicator device arranged at the starting intersection of the total road section, and the truck middle lane traffic guidance indicator device includes a gantry, a traffic dynamic display screen, a passenger car / truck driving lane indicator sign, a truck driving lane regulation sign, and a prohibition sign prohibiting trucks from entering the passenger lane; Truck lane division signs and passenger car free lane selection signs are installed at the entrances of the entire road section; The bus driving signs installed at the exits guide bus drivers to enter the left and right lanes in advance, and guide arrows and text markings are added on the ground; Warning signs set up within the road section include prohibition signs prohibiting trucks from entering passenger lanes and signs prompting passenger buses to change lanes in advance by turning left / right.

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