An ultra-high vehicle management and control method and system based on traffic signal linkage

Abstract

This invention discloses a method for controlling oversized vehicles based on traffic signal linkage, comprising the following steps: setting up an oversized vehicle detection section in the first lane group where the oversized vehicle is located, and installing oversized vehicle detection facilities to identify the oversized vehicle and determine whether an oversized vehicle violation event has been triggered; at the moment the oversized vehicle violation event occurs, adjusting the traffic lights of the first lane group from the normal state to the first emergency state; adjusting the traffic lights of the second lane group that conflict with the detour and diversion of the oversized vehicle, switching to the second emergency state, and simultaneously adjusting the traffic lights of the first lane group, switching to the third emergency state; at the end of the detour and diversion, adjusting the traffic lights of the first lane group and the traffic lights of the second lane group, switching back to the normal state. This invention also discloses an oversized vehicle control system based on traffic signal linkage. This invention solves the technical problem that existing technologies cannot actively control vehicles that have entered height-restricted road sections.

Description

Technical Field

[0001] This invention relates to the fields of intelligent traffic control and traffic safety technology, and in particular to a method and system for managing ultra-high-speed vehicles based on traffic signal linkage. Background Technology

[0002] Implementing height restrictions on road infrastructure such as bridges, culverts, and tunnels is a necessary means to ensure their structural and traffic safety. Traditional technologies for controlling oversized vehicles mainly include multi-level early warning and physical height restriction facilities. However, due to various reasons, drivers may not receive early warning information in time, and oversized vehicles may still collide with physical height restriction facilities, causing traffic congestion, property damage, and even personal injury. Existing technologies can accurately identify oversized vehicles and issue early warnings through LEDs, SMS, navigation, vehicle-mounted systems, and VMS, achieving a certain degree of early warning and control. However, they lack proactive control over oversized vehicles that have already entered height-restricted sections. Therefore, there is an urgent need to propose a method and system for controlling oversized vehicles based on traffic signal linkage to solve the technical problem that existing technologies cannot proactively control vehicles that have already entered height-restricted sections. Summary of the Invention

[0003] The main objective of this invention is to propose a method and system for controlling oversized vehicles based on traffic signal linkage, aiming to solve the technical problem that existing technologies cannot actively control vehicles that have entered height-restricted road sections.

[0004] To achieve the above objectives, the present invention provides a method for controlling oversized vehicles based on traffic signal linkage, wherein the method includes the following steps:

[0005] S1. Set up an over-height vehicle detection section in the first lane group where the over-height vehicle is located, and install over-height vehicle detection facilities to identify over-height vehicles and determine whether an over-height vehicle violation event has been triggered.

[0006] S2. When an incident occurs involving an oversized vehicle violating the restricted area, the traffic lights in the first lane are adjusted to switch from the normal state to the first emergency state.

[0007] S3. At the start of the detour and diversion, the traffic lights of the second lane group that conflict with the detour and diversion of oversized vehicles are adjusted and switched to the second emergency state, and the traffic lights of the first lane group are adjusted and switched to the third emergency state.

[0008] S4. At the end of the detour and traffic diversion period, adjust the traffic lights of the first and second lane groups and switch them to normal status.

[0009] One preferred embodiment is that step S1 involves setting up an over-height vehicle detection section in the first lane group where the over-height vehicle is located, specifically as follows:

[0010] The detection section for oversized vehicles was selected in the first lane group, specifically as follows:

[0011]

[0012] Where L1 is the distance between the detection section for over-height vehicles and the corresponding stop line of the first lane group, t r v0 is the driver's reaction time, v0 is the speed limit for the first lane group, and a is the vehicle deceleration.

[0013] One preferred embodiment is that the length of the non-reversible lane in the first lane group is greater than the distance between the over-height vehicle detection section and the corresponding stop line of the first lane group.

[0014] One preferred embodiment is that the ultra-high vehicle detection facility includes a laser sensor and an image processing unit;

[0015] The laser sensor is used to detect whether the vehicle exceeds the height limit;

[0016] The image processing unit is used to acquire the license plate information of the oversized vehicle.

[0017] In one preferred embodiment, after step S1, the method further includes:

[0018] If an oversized vehicle violates the restricted area, the incident will be synchronized to the oversized vehicle control center, the variable message sign at the intersection, and the traffic police's mobile terminal.

[0019] In one preferred embodiment, step S2 adjusts the traffic lights of the first lane group, switching them from a normal state to a first emergency state, specifically as follows:

[0020] If the traffic light for the first lane is green, then switch the traffic light to yellow, and after the yellow light has finished running, switch it to red and maintain the red light status.

[0021] If the traffic light in the first lane is red, then the red light status will remain unchanged.

[0022] If the traffic light in the first lane is yellow, it will switch to red after the yellow light has finished running and remain in red.

[0023] One preferred embodiment is that step S3 adjusts the traffic lights of the second lane group that conflict with the detour of oversized vehicles, switching them to the second emergency state, specifically as follows:

[0024] If the traffic light for the second lane is green, then switch the traffic light to yellow, and after the yellow light has finished running, switch it to red and maintain the red light status.

[0025] If the traffic light for the second lane is red, then the red light status will remain unchanged.

[0026] If the traffic light for the second lane is yellow, it will switch to red after the yellow light has finished running and remain in red.

[0027] An oversized vehicle control system based on traffic signal linkage, the oversized vehicle control system based on traffic signal linkage includes the aforementioned oversized vehicle control method based on traffic signal linkage.

[0028] In the above-described technical solution of the present invention, the method for controlling oversized vehicles based on traffic signal linkage includes the following steps: setting up an oversized vehicle detection section in the first lane group where the oversized vehicle is located, and installing oversized vehicle detection facilities to identify the oversized vehicle and determine whether an oversized vehicle violation event has been triggered; at the moment the oversized vehicle violation event occurs, adjusting the traffic lights of the first lane group from the normal state to the first emergency state; at the start of the detour, adjusting the traffic lights of the second lane group that conflict with the detour of the oversized vehicle to the second emergency state, and simultaneously adjusting the traffic lights of the first lane group to the third emergency state; at the end of the detour, adjusting the traffic lights of the first lane group and the traffic lights of the second lane group to the normal state. The present invention, by adding traffic signal interception for oversized vehicles at a location with detour conditions at the upstream intersection of the physical height restriction facility on a height-restricted road section, reduces the rate of oversized vehicles entering the height-restricted road section, effectively improves the control level of oversized vehicles, and solves the technical problem that existing technologies cannot actively control vehicles that have already entered the height-restricted road section. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of an oversized vehicle control method based on traffic signal linkage according to an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the intersection layout according to an embodiment of the present invention;

[0032] Figure 3 This is a traffic signal timing diagram for an intersection where no oversized vehicles have violated traffic restrictions, according to an embodiment of the present invention.

[0033] Figure 4 This is a traffic signal timing diagram for an intersection where an oversized vehicle violates traffic restrictions, as shown in an embodiment of the present invention.

[0034] The realization of the objective, functional characteristics and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] It should be noted that all directional indicators (such as up, down, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0037] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0038] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0039] See Figures 1-4 According to one aspect of the present invention, the present invention provides a method for controlling oversized vehicles based on traffic signal linkage, wherein the method for controlling oversized vehicles based on traffic signal linkage includes the following steps:

[0040] S1. Set up an over-height vehicle detection section in the first lane group where the over-height vehicle is located, and install over-height vehicle detection facilities to identify over-height vehicles and determine whether an over-height vehicle violation event has been triggered.

[0041] S2. When an incident occurs involving an oversized vehicle violating the restricted area, the traffic lights in the first lane are adjusted to switch from the normal state to the first emergency state.

[0042] S3. At the start of the detour and diversion, the traffic lights of the second lane group that conflict with the detour and diversion of oversized vehicles are adjusted and switched to the second emergency state, and the traffic lights of the first lane group are adjusted and switched to the third emergency state.

[0043] S4. At the end of the detour and traffic diversion period, adjust the traffic lights of the first and second lane groups and switch them to normal status.

[0044] Specifically, in this embodiment, at a suitable location at the intersection upstream of the physical height restriction facility leading to the height restriction section, an over-height vehicle detection section is set up in the first lane group where the over-height vehicle is located. Over-height vehicle detection facilities are installed to accurately identify over-height vehicles. Once the over-height vehicle detection facilities detect an over-height vehicle, an over-height vehicle violation event is triggered, and the event information, including the over-height vehicle's license plate information, is published to the over-height vehicle control center, variable message signs at the intersection, and traffic police mobile terminals, awaiting the arrival of traffic police to conduct detour guidance. The over-height vehicle detection facilities... The device includes a laser sensor and an image processing unit; the laser sensor is used to detect whether a vehicle exceeds the height limit; the image processing unit is used to acquire the license plate information of the vehicle exceeding the height limit; to safely intercept the vehicle exceeding the height limit upstream of the corresponding stop line in the first lane group, the distance between the detection section of the vehicle exceeding the height limit and the corresponding stop line in the first lane group must be greater than or equal to the sum of the vehicle's travel distance within the driver's reaction time and the distance traveled by the vehicle to a smooth stop; an detection section for the vehicle exceeding the height limit is selected in the first lane group, wherein the distance between the detection section of the vehicle exceeding the height limit and the corresponding stop line in the first lane group is:

[0045]

[0046] Where L1 is the distance between the detection section for over-height vehicles and the corresponding stop line of the first lane group, t r v0 is the driver's reaction time, v0 is the speed limit for the first lane group, and a is the vehicle deceleration.

[0047] Specifically, in this embodiment, in order to safely intercept oversized vehicles in the non-changeable lane section upstream of the stop line corresponding to the first lane group, the length of the non-changeable lane of the first lane group is greater than the distance between the oversized vehicle detection section and the stop line corresponding to the first lane group.

[0048] Specifically, in this embodiment, see Figure 2 Intersection layout diagram; traffic timing at the intersection is shown in Table 1; traffic signal timing at intersections without incidents of oversized or overweight vehicles violating traffic restrictions is shown in Table 1. Figure 3 .

[0049] Table 1 shows the traffic signal timing scheme for intersections.

[0050]

[0051] Specifically, in this embodiment, the first lane group is the straight-through lane group at the south entrance of the intersection, and the vehicle deceleration is 1.5 m / s². 2The speed limit for the first lane group is 16.7 m / s, and the driver's reaction time is 1 second. Based on this data, the distance between the over-height vehicle detection section and the stop line at the south entrance is 110 m, and the length of the non-reversible lane in the first lane group is 115 m. This invention does not impose specific limitations, and the specific settings can be made as needed.

[0052] Specifically, in this embodiment, the information regarding the incident of an oversized vehicle violating the height restriction includes a traffic light switching command sent to the oversized vehicle control center, a command sent to the variable message sign at the intersection stating "Vehicle ×× has entered the height restriction section, please wait for traffic police to direct traffic on site!", and a command sent to the traffic police's mobile terminal stating "Vehicle ×× has violated the height restriction at the south entrance of the ×× intersection".

[0053] Specifically, in this embodiment, at the moment an oversized vehicle violates the restricted area rule, the traffic signal system at the intersection controlled by the oversized vehicle control center adjusts the traffic lights of the first lane group where the oversized vehicle is located, switching from the normal state to the emergency state. The traffic lights of other lane groups at the intersection remain in the normal state, thereby intercepting the oversized vehicle upstream of the corresponding stop line in the first lane group. Step S2, adjusting the traffic lights of the first lane group from the normal state to the first emergency state, specifically involves:

[0054] If the traffic light for the first lane is green, then switch the traffic light to yellow, and after the yellow light has finished running, switch it to red and maintain the red light status.

[0055] If the traffic light in the first lane is red, then the red light status will remain unchanged.

[0056] If the traffic light in the first lane is yellow, it will switch to red after the yellow light has finished running and remain in red.

[0057] Specifically, in this embodiment, assuming the start time of the first phase green light is time 0, a random natural number is obtained within [0, 90] as the time when the oversized vehicle violation event occurs. Assuming the obtained random natural number is 10, the time when the oversized vehicle violation event occurs is t1 = 10. At time t1 = 10, the traffic light of the first lane group is green, then switches to yellow, and after the yellow light finishes running, switches to red and maintains the red light state. The traffic lights of other lane groups at the intersection remain in normal state.

[0058] Specifically, in this embodiment, after the traffic police receive information about the over-height vehicle violating the restricted area, they immediately arrive at the scene, determine a diversion plan for the over-height vehicle to turn left and leave the intersection based on the situation, and implement detour diversion. At the start of the detour diversion, the traffic lights of the second lane group conflicting with the over-height vehicle detour are adjusted and switched to the second emergency state, while the traffic lights of other lane groups remain in the normal state. Since there may be multiple traffic flows conflicting with the over-height vehicle diversion, the second lane group may correspond to multiple lane groups. Step S3 adjusts the traffic lights of the second lane group conflicting with the over-height vehicle detour, switching to the second emergency state, and simultaneously adjusts the traffic lights of the first lane group, switching to the third emergency state. Specifically:

[0059] If the traffic light for the second lane is green, then switch the traffic light to yellow, and after the yellow light has finished running, switch it to red and maintain the red light status.

[0060] If the traffic light for the second lane is red, then the red light status will remain unchanged.

[0061] If the traffic light in the second lane is yellow, it will switch to red after the yellow light has finished running and remain in red. In order to make full use of the intersection's time and space resources, when the traffic police begin to detour and guide traffic, the traffic light in the first lane will be switched to another emergency state, namely the third emergency state, which is to switch the traffic light in the first lane from red to green and maintain the green light state.

[0062] Specifically, in this embodiment, the traffic police arrive at the scene 30 seconds after receiving information about the over-height vehicle violating the restricted area. The detour and traffic control plan is to guide the over-height vehicle to turn left and leave the intersection. Therefore, the detour and traffic control begins at t2 = 40. The second lane group includes north entrance straight, north entrance left turn, east entrance straight, east entrance left turn, west entrance straight, and west entrance left turn lanes. At t2 = 40, the traffic light for the north entrance straight lane group of the second lane group is red and remains red. At t2 = 40, the traffic light for the north entrance left turn lane group of the second lane group is green, then switches to yellow, and switches back to green after the yellow light has finished running. The traffic light changes to red and remains red. At time t2=40, the traffic light for the east entrance straight-through lane group of the second lane group is red and remains red. At time t2=40, the traffic light for the west entrance straight-through lane group of the second lane group is red and remains red. At time t2=40, the traffic light for the east entrance left-turn lane group of the second lane group is red and remains red. At time t2=40, the traffic light for the west entrance left-turn lane group of the second lane group is red and remains red. At time t2=40, the traffic light for the south entrance straight-through lane group of the first lane group is red. The red light changes to green and remains green.

[0063] Specifically, in this embodiment, the traffic police take 60 seconds to detour and guide traffic on-site. The detour and guidance ends at time t3 = 100, that is, at time t3, the traffic lights of the first lane group and the second lane group return to the normal state from the emergency state.

[0064] Specifically, in this embodiment, an incident of an oversized vehicle violating traffic restrictions occurs at the intersection at time t1=10, the on-duty traffic police arrive at the scene at time t2=40 and begin on-site detour and traffic control, and the detour and traffic control ends at time t3=100. The traffic signal timing diagram for the incident of an oversized vehicle violating traffic restrictions at the intersection is shown below. Figure 4 .

[0065] According to another aspect of the present invention, the present invention provides an oversized vehicle control system based on traffic signal linkage, wherein the oversized vehicle control system based on traffic signal linkage includes the aforementioned oversized vehicle control method based on traffic signal linkage.

[0066] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A traffic signal linkage-based ultra-high vehicle management method, characterized in that, Includes the following steps: S1. Set up an over-height vehicle detection section in the first lane group where the over-height vehicle is located, and install over-height vehicle detection facilities to identify over-height vehicles and determine whether an over-height vehicle violation event has been triggered; the step S1 of setting up an over-height vehicle detection section in the first lane group where the over-height vehicle is located specifically includes: The detection section for oversized vehicles was selected in the first lane group, specifically as follows: wherein, is the distance from the detection section of the super-high vehicle to the stop line corresponding to the first lane group, is the driver reaction time, is the speed limit value of the first lane group section, is the vehicle deceleration; The length of the non-reversible lane in the first lane group is greater than the distance between the over-height vehicle detection section and the corresponding stop line of the first lane group; S2. At the moment an incident occurs where an oversized vehicle violates the restricted area, the traffic lights in the first lane group are adjusted from the normal state to the first emergency state; the specific steps of adjusting the traffic lights in the first lane group from the normal state to the first emergency state are as follows: If the traffic light for the first lane is green, then switch the traffic light to yellow, and after the yellow light has finished running, switch it to red and maintain the red light status. If the traffic light in the first lane is red, then the red light status will remain unchanged. If the traffic light in the first lane is yellow, it will switch to red after the yellow light has finished running and remain in red light status. S3. At the start of the detour and traffic diversion, the traffic lights of the second lane group that conflict with the detour and traffic diversion of oversized vehicles are adjusted and switched to the second emergency state. Simultaneously, the traffic lights of the first lane group are adjusted and switched to the third emergency state. The specific steps of adjusting the traffic lights of the second lane group that conflict with the detour and traffic diversion of oversized vehicles and switching to the second emergency state in step S3 are as follows: If the traffic light for the second lane is green, then switch the traffic light to yellow, and after the yellow light has finished running, switch it to red and maintain the red light status. If the traffic light for the second lane is red, then the red light status will remain unchanged. If the traffic light for the second lane is yellow, it will switch to red after the yellow light has finished running and remain in red light status. S4. At the end of the detour and traffic diversion period, adjust the traffic lights of the first and second lane groups and switch them to normal status.

2. The traffic signal interlocking-based ultra-high vehicle management method according to claim 1, wherein The ultra-high vehicle detection facility includes a laser sensor and an image processing unit; The laser sensor is used to detect whether the vehicle exceeds the height limit; The image processing unit is used to acquire the license plate information of the oversized vehicle.

3. The traffic signal interlocking-based ultra-high vehicle management method according to claim 1, wherein After step S1, the method further includes: If an oversized vehicle violates the restricted area, the incident will be synchronized to the oversized vehicle control center, the variable message sign at the intersection, and the traffic police's mobile terminal.

4. A traffic signal linkage-based ultra-high vehicle management and control system, characterized by, The traffic signal-based oversized vehicle control system includes the traffic signal-based oversized vehicle control method described in any one of claims 1-3.

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