A method and system for regionalized dispatching of expressways based on cross-sectional flow changes

Abstract

The present invention discloses a method and system for regionalized dispatching of expressways based on cross-sectional flow changes. First, real-time congested road section information of a road network is collected, and the congestion length change trend and the year-on-year situation of the congested length are obtained according to the real-time congested road section information. Then, the cross-sectional flow change trend and the year-on-year situation of the cross-sectional flow are obtained according to the real-time congested road section information. Then, based on the congested length change trend and the cross-sectional flow change trend of the congested road section, the method and system realize the function of providing a refined regionalized dispatching scheme combining intermittent release of toll stations, closure of toll station entrances, diversion of toll station exits and speed limit of main roads according to the congestion change situation, flow change situation and vehicle source situation of the congested road section, and also realizes the function of relieving congestion from the source of the congested road section, which not only improves the efficiency of relieving congestion, but also maximizes the traffic efficiency of vehicles, and is suitable for being widely promoted and used.

Description

Technical Field

[0001] The present invention relates to the technical field of regionalized dispatching of expressways, and in particular to a method and system for regionalized dispatching of expressways based on changes in cross-sectional flow. Background Art

[0002] Traffic flow on highways mostly shows a significant tidal phenomenon, which is mainly caused by the concentrated travel of vehicles during peak hours in the morning and evening. This regular two-way flow leads to serious congestion on highways during specific periods.

[0003] At present, the rapid increase in the number of vehicles poses a huge challenge to road capacity, which in turn leads to a significant reduction in traffic efficiency. Drivers have to face long waiting times and slow driving speeds, which not only affects people's daily travel, but may also cause traffic accidents and further aggravate traffic congestion. Especially during the peak travel period of holidays, congestion is particularly serious. Therefore, it is necessary to design a regionalized highway scheduling method and system based on cross-sectional flow changes. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and to better and effectively solve the problem that the sharp increase in the number of vehicles currently poses a huge challenge to the road traffic capacity, thereby significantly reducing traffic efficiency. A method and system for regionalized scheduling of highways based on cross-sectional flow changes is provided, which realizes the function of providing a refined regionalized scheduling plan combining intermittent release of toll stations, closure of toll station entrances, diversion of toll station exits and speed limit of main roads according to the congestion changes, flow changes and vehicle sources of congested sections. It also realizes the function of relieving congestion from the source of congested sections, which not only improves the efficiency of relieving congestion, but also maximizes the traffic efficiency of vehicles.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A method and system for regionalized dispatching of expressways based on cross-sectional flow changes, comprising the following steps:

[0007] Step A, collecting real-time congested road section information of the road network, and then obtaining the congested length change trend and year-on-year situation of the congested length of the congested road section based on the real-time congested road section information;

[0008] Step B, obtaining the change trend of the cross-sectional flow rate of the congested section and the year-on-year situation of the cross-sectional flow rate according to the real-time congested section information, and then judging the change trend of the congestion situation of the congested section based on the change trend of the congested length of the congested section and the change trend of the cross-sectional flow rate of the congested section;

[0009] Step C, collecting historical driving path information of vehicles in congested road sections;

[0010] Step D, based on the year-on-year situation of congestion length and the year-on-year situation of cross-sectional flow, a regionalized dispatching plan is generated according to the trend of congestion situation and the historical driving path information of vehicles;

[0011] Step E: Track the implementation of the regionalized dispatching scheme according to the changes in the congested mileage and cross-sectional flow of the congested road sections, and complete the regionalized dispatching operation of the expressway.

[0012] The aforementioned regionalized dispatching method for highways based on cross-sectional flow changes, step A, collects real-time congested section information of the road network, and then obtains the change trend of the congested length of the congested section and the year-on-year situation of the congested length based on the real-time congested section information, wherein the real-time congested section information includes the congestion starting point position and the congestion end point position.

[0013] The aforementioned regionalized dispatching method for highways based on cross-sectional flow changes, step B, obtains the cross-sectional flow change trend and cross-sectional flow year-on-year situation of the congested section according to the real-time congested section information, and then judges the congestion change trend of the congested section based on the congestion length change trend and the cross-sectional flow change trend of the congested section. The specific steps are as follows:

[0014] Step B1, comparing the real-time congestion mileage of the congested road section at a fixed time interval of five minutes, and obtaining a first comparison result;

[0015] Step B2, comparing the real-time cross-sectional flow of the congested road section at a fixed time interval of five minutes, and obtaining a second comparison result;

[0016] Step B3, based on the first comparison result, compare the real-time congestion mileage change of the congested road section with the historical congestion mileage change during the same period and obtain a third comparison result, specifically collecting the real-time congestion mileage of the congested road section and forming a mileage sample library { , , ··· }, then collect the historical section flow in the same period and form a mileage sample library { , , ··· }, and the third comparison result P is as shown in formula (1),

[0017] P= (1)

[0018] in, Indicates time;

[0019] Step B4, based on the second comparison result, compare the real-time cross-sectional flow change of the congested road section with the cross-sectional flow change of the same period in history and obtain a fourth comparison result, specifically collecting the cross-sectional flow of the congested road section and forming a mileage sample library { , ··· }, then collect the historical section flow in the same period and form a mileage sample library { , , ··· }, and the fourth comparison result Q is shown in formula (2),

[0020] Q= (2);

[0021] Step B5: based on the third comparison result and the fourth comparison result, determine the congestion change trend of the congested road section, specifically, perform weighted calculation on the third comparison result and the fourth comparison result to obtain the final congestion degree. , as shown in formula (3),

[0022] (3).

[0023] The aforementioned method for regionalized dispatching of highways based on changes in cross-sectional flow, step C, collects historical driving path information of vehicles in congested sections, specifically, uses highway toll gantry equipment to collect basic vehicle information of congested sections and obtains vehicle toll information based on the basic vehicle information, and then obtains toll station information on the highway and road section information passed by the vehicle based on the vehicle toll information.

[0024] The aforementioned method for regionalized dispatching of expressways based on changes in cross-sectional flow, step D, generates a regionalized dispatching plan based on the year-on-year situation of congestion length and cross-sectional flow, according to the trend of congestion changes and historical vehicle travel path information. The specific steps are as follows:

[0025] Step D1, judging whether it is necessary to alleviate the current congestion through a regionalized dispatching scheme according to the congestion change trend of the congested road section, and then determining a specific regionalized dispatching scheme according to the vehicle source information of the congested road section;

[0026] Step D2: If the congestion situation shows no signs of easing and continues to intensify, intermittent traffic control is implemented at toll stations where vehicles on the highway in the congested section are allowed to enter;

[0027] Step D3: If the congestion situation shows no signs of easing and continues to intensify again, traffic diversion and traffic control will be carried out on the road section where vehicles travel through the congested section.

[0028] A regionalized dispatching system for expressways based on cross-sectional flow changes, comprising a road network collection module, a congestion situation judgment module, a vehicle collection module, a dispatching generation module and a dispatching execution monitoring module, wherein the road network collection module is used to collect real-time congested road section information of the road network and obtain the congestion length change trend and the year-on-year situation of the congested road section according to the real-time congested road section information;

[0029] The congestion situation judgment module is used to obtain the cross-sectional flow change trend and the cross-sectional flow year-on-year situation of the congested section according to the real-time congested section information, and then judge the congestion situation change trend of the congested section based on the congestion length change trend and the cross-sectional flow change trend of the congested section;

[0030] The vehicle collection module is used to collect historical driving path information of vehicles in congested road sections;

[0031] The scheduling generation module is used to generate a regional scheduling plan based on the year-on-year situation of congestion length and the year-on-year situation of cross-sectional flow, and according to the trend of congestion situation changes and the historical driving path information of vehicles;

[0032] The dispatch execution monitoring module is used to track the execution of the regional dispatch plan according to the changes in the congested mileage and the cross-sectional flow of the congested road section, and complete the regional dispatch operation of the expressway.

[0033] The beneficial effects of the present invention are as follows: a method and system for regionalized dispatching of highways based on cross-sectional flow changes of the present invention first collects real-time congested section information of the road network and obtains the congestion length change trend and the year-on-year situation of the congested length according to the real-time congested section information, then obtains the cross-sectional flow change trend and the year-on-year situation of the cross-sectional flow according to the real-time congested section information, and then judges the congestion situation change trend of the congested section based on the congested length change trend and the cross-sectional flow change trend of the congested section, then collects the historical driving path information of vehicles in the congested section, and then generates a regionalized dispatching plan based on the year-on-year situation of the congested length and the year-on-year situation of the cross-sectional flow and the congestion situation change trend and the historical driving path information of vehicles, and then generates a regionalized dispatching plan based on the congested section. The changes in congestion mileage and cross-sectional flow rate track the implementation of the regionalized scheduling plan and complete the regionalized scheduling operation of the expressway; the regionalized scheduling method and system of the expressway are effectively realized, which has the function of providing a refined regionalized scheduling plan combining intermittent release of toll stations, closure of toll station entrances, diversion of toll station exits and speed limit of main roads according to the changes in congestion, flow rate and vehicle sources of the congested sections; it also realizes the function of relieving congestion from the source of the congested sections, which not only improves the efficiency of congestion relief, but also maximizes the traffic efficiency of vehicles. This method of combining the congested mileage of the section with the cross-sectional flow rate of the section to predict the change of congestion can effectively improve the accuracy of the prediction and provide strong support for regionalized scheduling. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a flow chart of a highway regional dispatching method based on cross-sectional flow change of the present invention;

[0035] Figure 2 The present invention is a schematic diagram of a regionalized dispatching system for expressways based on cross-sectional flow changes. DETAILED DESCRIPTION

[0036] The present invention will be further described below in conjunction with the accompanying drawings.

[0037] like Figure 1 As shown, a method for regionalized dispatching of expressways based on cross-sectional flow changes of the present invention comprises the following steps:

[0038] Step A, collecting real-time congested section information of the road network, and then obtaining the change trend of the congested length of the congested section and the year-on-year situation of the congested length based on the real-time congested section information, wherein the real-time congested section information includes the congestion starting point position and the congestion end point position.

[0039] Step B, according to the real-time congested road section information, obtain the cross-sectional flow change trend and cross-sectional flow year-on-year situation of the congested road section, and then judge the congestion change trend of the congested road section based on the congestion length change trend and the cross-sectional flow change trend of the congested road section. The specific steps are as follows:

[0040] Step B1, comparing the real-time congestion mileage of the congested road section at a fixed time interval of five minutes, and obtaining a first comparison result;

[0041] Step B2, comparing the real-time cross-sectional flow of the congested road section at a fixed time interval of five minutes, and obtaining a second comparison result;

[0042] Step B3, based on the first comparison result, compare the real-time congestion mileage change of the congested road section with the historical congestion mileage change during the same period and obtain a third comparison result, specifically collecting the real-time congestion mileage of the congested road section and forming a mileage sample library { , , ··· }, then collect the historical section flow in the same period and form a mileage sample library { , , ··· }, and the third comparison result P is as shown in formula (1),

[0043] P= (1)

[0044] in, Indicates time;

[0045] Step B4, based on the second comparison result, compare the real-time cross-sectional flow change of the congested road section with the cross-sectional flow change of the same period in history and obtain a fourth comparison result, specifically collecting the cross-sectional flow of the congested road section and forming a mileage sample library { , ··· }, then collect the historical section flow in the same period and form a mileage sample library { , , ··· }, and the fourth comparison result Q is shown in formula (2),

[0046] Q= (2);

[0047] Step B5: based on the third comparison result and the fourth comparison result, determine the congestion change trend of the congested road section, specifically, perform weighted calculation on the third comparison result and the fourth comparison result to obtain the final congestion degree. , as shown in formula (3),

[0048] (3).

[0049] Step C, collecting the historical driving path information of vehicles in the congested section, specifically using the highway toll gantry equipment to collect the basic information of vehicles in the congested section and obtain the vehicle toll information based on the basic information of the vehicle, and then obtain the toll station information on the highway and the road section information passed by the vehicle based on the vehicle's toll information.

[0050] Step D, based on the year-on-year situation of congestion length and section flow, generates a regionalized dispatching plan according to the congestion trend and the historical vehicle travel path information. The specific steps are as follows:

[0051] Step D1, judging whether it is necessary to alleviate the current congestion through a regionalized dispatching scheme according to the congestion change trend of the congested road section, and then determining a specific regionalized dispatching scheme according to the vehicle source information of the congested road section;

[0052] Step D2: If the congestion situation shows no signs of easing and continues to intensify, intermittent traffic control is implemented at toll stations where vehicles on the highway in the congested section are allowed to enter;

[0053] Step D3: If the congestion situation shows no signs of easing and continues to intensify again, traffic diversion and traffic control will be carried out on the road section where vehicles travel through the congested section.

[0054] Step E: Track the implementation of the regionalized dispatching scheme according to the changes in the congested mileage and cross-sectional flow of the congested road sections, and complete the regionalized dispatching operation of the expressway.

[0055] like Figure 2 As shown, a regionalized dispatching system for expressways based on cross-sectional flow changes includes a road network acquisition module, a congestion situation judgment module, a vehicle acquisition module, a dispatching generation module, and a dispatching execution monitoring module. The road network acquisition module is used to collect real-time congested road section information of the road network and obtain the congestion length change trend and the year-on-year situation of the congested road section according to the real-time congested road section information;

[0056] The congestion situation judgment module is used to obtain the cross-sectional flow change trend and the cross-sectional flow year-on-year situation of the congested section according to the real-time congested section information, and then judge the congestion situation change trend of the congested section based on the congestion length change trend and the cross-sectional flow change trend of the congested section;

[0057] The vehicle collection module is used to collect historical driving path information of vehicles in congested road sections;

[0058] The scheduling generation module is used to generate a regional scheduling plan based on the year-on-year situation of congestion length and the year-on-year situation of cross-sectional flow, and according to the trend of congestion situation changes and the historical driving path information of vehicles;

[0059] The dispatch execution monitoring module is used to track the execution of the regional dispatch plan according to the changes in the congested mileage and the cross-sectional flow of the congested road section, and complete the regional dispatch operation of the expressway.

[0060] In summary, the present invention provides a method and system for regionalized dispatching of highways based on cross-sectional flow changes. First, the real-time congested section information of the road network is collected and the congested length change trend and the year-on-year situation of the congested length are obtained according to the real-time congested section information. Then, the cross-sectional flow change trend and the year-on-year situation of the cross-sectional flow are obtained according to the real-time congested section information. Then, based on the congested length change trend and the cross-sectional flow change trend of the congested section, the congestion situation change trend of the congested section is judged. Subsequently, the historical driving path information of vehicles in the congested section is collected. Then, based on the year-on-year situation of the congested length and the year-on-year situation of the cross-sectional flow and the congested situation change trend and the historical driving path information of vehicles, a regionalized dispatching plan is generated. Then, according to the congestion of the congested section, The mileage changes and cross-sectional flow changes track the implementation of the regionalized scheduling plan and complete the regionalized scheduling of highways; the regionalized scheduling method and system of the highway are effectively realized, which has the function of providing a refined regionalized scheduling plan combining intermittent release of toll stations, closure of toll station entrances, diversion of toll station exits and speed limit of main roads according to the congestion changes, flow changes and vehicle sources of congested sections; it also realizes the function of relieving congestion from the source of congested sections, which not only improves the efficiency of congestion relief, but also maximizes the traffic efficiency of vehicles. This method of combining the congested mileage of the section with the cross-sectional flow of the section to predict the change of congestion can effectively improve the accuracy of the prediction and provide strong support for regionalized scheduling.

[0061] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for regionalized dispatching of expressways based on cross-sectional flow changes, characterized in that: The following steps are included: Step A, collecting real-time congested road section information of the road network, and then obtaining the congestion length change trend and the congestion length year-on-year situation of the congested road section according to the real-time congested road section information, wherein the real-time congested road section information includes the congestion starting point position and the congestion end point position; Step B, according to the real-time congested road section information, obtain the cross-sectional flow change trend and cross-sectional flow year-on-year situation of the congested road section, and then judge the congestion change trend of the congested road section based on the congestion length change trend and the cross-sectional flow change trend of the congested road section. The specific steps are as follows: Step B1, comparing the real-time congestion mileage of the congested road section at a fixed time interval of five minutes, and obtaining a first comparison result; Step B2, comparing the real-time cross-sectional flow of the congested road section at a fixed time interval of five minutes, and obtaining a second comparison result; Step B3, based on the first comparison result, compare the real-time congestion mileage change of the congested road section with the historical congestion mileage change during the same period and obtain a third comparison result, specifically, collect the real-time congestion mileage of the congested road section and form a mileage sample library {A1, A2, A3...A i }, and then collect the historical congestion mileage in the same period and form a mileage sample library {B1, B2, B3...B i }, and the third comparison result P is shown in formula (1), Wherein, t represents time; Step B4, based on the second comparison result, compare the real-time cross-sectional flow change of the congested road section with the cross-sectional flow change of the same period in history and obtain a fourth comparison result, specifically, collect the cross-sectional flow of the congested road section and form a mileage sample library {C1, C2, C3...C i }, and then collect the historical section flow in the same period and form a mileage sample library {D1, D2, D3...D i }, and the fourth comparison result Q is shown in formula (2), Step B5: based on the third comparison result and the fourth comparison result, determine the congestion change trend of the congested road section, specifically, perform weighted calculation on the third comparison result and the fourth comparison result and obtain the final congestion degree θ, as shown in formula (3), θ=P*0.6+Q*0.4(3); Step C, collecting historical driving path information of vehicles in congested road sections; Step D, based on the year-on-year situation of congestion length and section flow, generates a regionalized dispatching plan according to the congestion trend and the historical vehicle travel path information. The specific steps are as follows: Step D1, judging whether it is necessary to alleviate the current congestion through a regionalized dispatching scheme according to the congestion change trend of the congested road section, and then determining a specific regionalized dispatching scheme according to the vehicle source information of the congested road section; Step D2: If the congestion situation shows no signs of easing and continues to intensify, intermittent traffic control is implemented at toll stations where vehicles on the highway in the congested section are allowed to enter; Step D3: If the congestion situation does not show a trend of easing and continues to intensify again, traffic diversion and traffic control are carried out on the road section where vehicles travel through the congested section; Step E: Track the implementation of the regionalized dispatching scheme according to the changes in the congested mileage and cross-sectional flow of the congested road sections, and complete the regionalized dispatching operation of the expressway.

2. A method for regionalized dispatching of expressways based on cross-sectional flow changes according to claim 1, characterized in that: Step C, collecting the historical driving path information of vehicles in the congested section, specifically using the highway toll gantry equipment to collect the basic information of vehicles in the congested section and obtain the vehicle toll information based on the basic information of the vehicle, and then obtain the toll station information on the highway and the road section information passed by the vehicle based on the vehicle's toll information.

3. A highway regional dispatching system based on cross-sectional flow changes, wherein the specific dispatching process of the highway regional dispatching system is based on the highway regional dispatching method according to any one of claims 1-2, characterized in that: It includes a road network collection module, a congestion situation judgment module, a vehicle collection module, a dispatch generation module and a dispatch execution monitoring module. The road network collection module is used to collect real-time congested road section information of the road network and obtain the congestion length change trend and the year-on-year situation of the congested length according to the real-time congested road section information; The congestion situation judgment module is used to obtain the cross-sectional flow change trend and the cross-sectional flow year-on-year situation of the congested section according to the real-time congested section information, and then judge the congestion situation change trend of the congested section based on the congestion length change trend and the cross-sectional flow change trend of the congested section; The vehicle collection module is used to collect historical driving path information of vehicles in congested road sections; The scheduling generation module is used to generate a regional scheduling plan based on the year-on-year situation of congestion length and the year-on-year situation of cross-sectional flow, and according to the trend of congestion situation changes and the historical driving path information of vehicles; The dispatch execution monitoring module is used to track the execution of the regional dispatch plan according to the changes in the congested mileage and the cross-sectional flow of the congested road section, and complete the regional dispatch operation of the expressway.

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