CN114822017A - Overhead expressway traffic guidance system for avoiding local congestion queuing - Google Patents
Overhead expressway traffic guidance system for avoiding local congestion queuing Download PDFInfo
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- G08—SIGNALLING
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- G08G1/00—Traffic control systems for road vehicles
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- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0137—Measuring and analyzing of parameters relative to traffic conditions for specific applications
- G08G1/0145—Measuring and analyzing of parameters relative to traffic conditions for specific applications for active traffic flow control
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- G—PHYSICS
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- G08G1/00—Traffic control systems for road vehicles
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- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0125—Traffic data processing
- G08G1/0133—Traffic data processing for classifying traffic situation
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- G—PHYSICS
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- G08G—TRAFFIC CONTROL SYSTEMS
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Abstract
The invention discloses an elevated expressway traffic guidance system for avoiding local congestion and queuing, which relates to the field of urban elevated expressway traffic management and control and aims to avoid the problem of local queuing and congestion caused by elevated expressway traffic accidents or vehicle lane change and congestion and the like and ensure the full and effective utilization of elevated expressway resources; by the method, the overhead traffic flow is timely guided to the ground road, the upper ramp is drained again to enter the overhead passage after the local congestion queuing road section is avoided, and therefore other road section resources of the overhead passage are fully utilized on the premise of effectively avoiding the congestion queuing of the overhead passage, and the method has important significance for effectively utilizing the overhead passage and improving the urban traffic passage efficiency.
Description
Technical Field
The invention relates to the field of urban overhead expressway traffic management and control, in particular to an overhead expressway traffic guidance system for avoiding local congestion and queuing.
Background
The urban elevated expressway is used as the highest-grade road of a city, has the characteristics of large capacity, high speed and the like, plays a skeleton role in a road traffic network of numerous large and medium-sized cities, is an important channel for long-distance rapid traffic in urban traffic, and has a great effect on improving traffic safety and traffic efficiency of the whole city. Therefore, in order to effectively relieve traffic pressure and adapt to the integral harmonious development of cities, many large and medium-sized cities select to build urban elevated expressways to improve the vehicle running speed, improve the road traffic capacity and meet the requirements of urban passenger transport and freight transport.
In recent years, with the increase of the quantity of motor vehicles in cities, the smooth operation of an elevated expressway is affected and challenged, traffic jam events are often generated, the generation of the traffic jam events of the elevated expressway is generally caused by traffic accidents, merging lanes and entering ramps, vehicles passing in a jam mode and other problems, and the traffic events may occupy part of roads of the elevated expressway, so that the traffic capacity of the elevated expressway is reduced, and congestion queuing is formed. The congestion queuing phenomenon is formed locally, and if the follow-up traffic flow is not guided to pass in time, the congestion can be caused to the congestion of the whole road section by rapidly spreading. If the traffic flow is guided to leave the elevated road and is not guided back in time, the resource waste of the non-queuing elevated road section can be caused, so that the overhead expressway traffic guidance system for avoiding local congestion and queuing is very important, and is very necessary for fully utilizing the resources of the overhead expressway and effectively improving the traffic efficiency of the overhead expressway.
Aiming at the problem of overhead expressway traffic, in the prior art, in order to improve the traffic efficiency of an overhead expressway main line traffic flow and reduce the main line traffic flow density, a current-limiting control measure is taken for an overhead expressway ramp; in the prior art, parameters such as the traffic flow speed of the overhead expressway, the queuing length and the like are monitored through radar and video detection technologies, and a flow limiting and intercepting control scheme is implemented on the ramp of the vehicle by analyzing the queuing influence range and adopting measures such as ramp control of the overhead expressway. However, queuing is a dynamic change process, including two processes of increasing queuing due to arrival of vehicles later and dissipating queuing due to departure of vehicles ahead, so that timely shunting and intercepting are required to be performed on peripheral ascending and descending ramps running in the same direction according to dynamic change conditions of queuing, and meanwhile, in consideration of fully utilizing resources of unlined elevated road sections, the shunted vehicles also need to be guided back to an elevated expressway for passing through in time through a reasonable method, and it is necessary to fully utilize resources of the elevated road while reducing local congestion queuing influence. The method for monitoring the dynamic change condition of local congestion queuing of the overhead expressway in real time, timely associating the dynamic change condition with a ramp port LED guide screen and a ground signal lamp according to queuing increasing and dissipating processes, effectively shunting and limiting the vehicles, and re-guiding the vehicles shunted from the overhead expressway back to the overhead expressway is not related at present.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. The invention aims to avoid the problem of local queuing congestion caused by events such as overhead expressway traffic accidents or vehicle lane change and congestion and the like, and ensure the full and effective utilization of overhead expressway resources. By the method, the overhead traffic flow is timely guided to the ground road, the upper ramp is drained again to enter the overhead passage after the local congestion queuing road section is avoided, and therefore other road section resources of the overhead passage are fully utilized on the premise of effectively avoiding the congestion queuing of the overhead passage, and the method has important significance for effectively utilizing the overhead passage and improving the urban traffic passage efficiency.
In order to achieve the above object, an embodiment according to a first aspect of the present invention provides an overhead expressway traffic guidance system for avoiding local congestion queuing, including a hardware layer and a processing layer, where the hardware layer and the processing layer implement interaction in real time through data signals;
the hardware layer comprises a microwave radar, an LED induction screen and an intersection signal lamp; the microwave radar is used for realizing full-coverage real-time monitoring of the vehicle passing condition of the whole line of the overhead expressway, and the LED induction screens are installed at the entrance of an ascending ramp and the exit of a descending ramp of the overhead expressway; the crossing signal lamp is positioned on an urban road where the elevated uplink and downlink ramps are connected with the ground;
the processing layer comprises a rule setting module, an analysis processing module and a decision making module, the rule setting module is used for setting a passing guide rule, the analysis processing module is used for receiving data signals sent by a hardware layer in real time and finishing passing guide analysis by combining the rule setting module, and the decision making module is used for receiving the signals sent by the analysis processing module and making a passing guide decision.
Preferably, the microwave radar is arranged on a road side street lamp rod piece, the arrangement distance of the front radar and the rear radar is a, the value of a is adjusted according to the actual condition, and the specific numerical value is given by the processing layer;
the front and the back radar detection ranges are partially overlapped without dead angles by adjusting the angle, and then the full-coverage real-time monitoring of the overhead expressway all-line vehicle passing condition is realized.
Preferably, when local congestion and queuing occur to the overhead, the local congestion and queuing control is performed on the overhead shunting and drainage ramp, and a mode of adjusting the overhead traffic green light time in the same direction and coordinating green light signals at a plurality of intersections is adopted.
Preferably, the process of the rule setting module for setting the traffic guidance rule includes the following steps:
dividing a slice region; the rule setting module acquires the length of the whole line of the main line of the whole line overhead expressway, sets the length b of the detection area, and the value of b is adjusted according to the actual condition and is set by the rule setting module;
setting a period; the rule setting module acquires the length of the detection area and gives a statistical period T of the microwave radar, the value of the T is adjusted according to the actual situation, and the specific numerical value is set and given by the rule setting module; the processing layer sends the statistical period T to the hardware layer through data signal interaction;
establishing a threshold value; the rule setting module gives a speed threshold V of the film area, the value of V is adjusted according to the actual situation, and the specific value is set and given by the rule setting module; the rule setting module sends the established parcel speed threshold V to the analysis processing module.
Preferably, the process of implementing traffic guidance analysis by the analysis processing module includes the following steps:
the method comprises the following steps: the microwave radar detects the real-time speed of each time interval, each detection area and each vehicle in real time, and sends the detected real-time speed of each time interval, each detection area and each vehicle to the analysis processing module in combination with the statistical period T set by the rule setting module;
step two: the analysis processing module calculates the average speed of the vehicle in each detection area in the statistical period T; the analysis processing module compares the average speed of the vehicle with a parcel speed threshold;
step three: when the average speed of the vehicles in the detection zone is less than or equal to the zone speed threshold value, marking the detection zone as a congestion zone;
when the average speed of the vehicles in the detection section is greater than the section speed threshold value, marking the detection section as a normal section;
step four: the analysis processing module sends the jammed section and the normal section to the decision making module.
Preferably, the decision making module is configured to receive the signal sent by the analysis processing module and make a traffic guidance decision, and the process includes the following steps:
the decision making module receives the jammed sub-areas and the normal sub-areas sent by the analysis processing module, and merges adjacent detection sub-areas belonging to the same state and marks the detection sub-areas as jammed road sections or normal road sections;
the decision making module acquires the distance between the adjacent congested road sections, marks the distance as a buffer distance, and merges the adjacent congested road sections when the buffer distance is smaller than a guide threshold distance; acquiring a queuing starting point and a queuing end point of a congested road section;
step S3: the decision making module shunts the congestion road section detected in real time and the downlink ramp junction within a range of c meters behind the queuing terminal point in advance, and prompts 'congestion ahead and detouring to an upper ramp ahead' through an LED induction screen, all the upper ramps within the range are limited, and prompts 'congestion ahead and no-entry ramp' through the LED induction screen;
the first ascending ramp port outside the range d meters ahead of the queuing starting point is drained in time, and an LED induction screen prompts that no congestion exists ahead and the ramp can be loaded to an overhead;
the decision making module performs relevant control on the intersection signal lamps to ensure that vehicles can timely bypass an overhead local congestion road section, quickly pass to the next upstream turn crossing without congestion in front through green wave coordination linkage of the ground signal lamps, and re-enter the overhead passage.
Compared with the prior art, the invention has the beneficial effects that:
1. by carrying out real-time monitoring every second on the rear increasing and front dissipating processes of local congestion queuing and dynamically associating the ascending ramp, the descending ramp and a ground signal lamp matched facility at a certain distance before and after the local congestion queuing, the overhead traffic flow is timely guided to the ground road, the ascending ramp is drained again to enter the overhead passage after the local congestion queuing road section is avoided, and therefore other road section resources of the overhead expressway are fully utilized on the premise of effectively avoiding the congestion queuing of the overhead expressway, and the method has important significance for effectively utilizing the overhead expressway and improving the urban traffic passage efficiency.
2. The invention aims at the problem of a guiding method for avoiding local congestion and queuing of an elevated expressway, carries out full-line monitoring on the elevated expressway by using a microwave radar, divides the elevated expressway into a plurality of continuous detection areas, detects the average speed of vehicles in each area in real time and judges whether queuing occurs or not, when local congestion queuing occurs, the dynamic change process of the increase and dissipation of the local congestion queuing is monitored every second, on the basis, the method for guiding the overhead expressway to pass is provided, the local congestion queuing of the overhead expressway is monitored in real time, the current is shunted in advance and drained in time, an effective control scheme is formed, the subsequent vehicles are prevented from further increasing the congestion queuing length in advance, the shunted vehicles are drained back to the overhead expressway to pass in time, therefore, unaffected road resources of the elevated expressway are fully utilized on the premise of effectively avoiding local congestion and queuing of the elevated expressway.
Drawings
FIG. 1 is a flow chart of an overhead expressway traffic guidance method for avoiding local congestion queuing;
FIG. 2 is a schematic diagram of the installation location and detection range of the system device;
FIG. 3 is a schematic diagram of an overhead expressway traffic guidance method for avoiding local congestion queuing;
FIG. 4 is a schematic diagram of a differentiation method that considers elevated multiple local congestion queuing;
fig. 5 is a schematic diagram of an overhead expressway traffic guidance system for avoiding local congestion queuing.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the first aspect of the present invention proposes an overhead expressway traffic guidance system avoiding local congestion queuing, as shown in fig. 5, the guidance system comprising: the system comprises a hardware layer and a processing layer, wherein the hardware layer and the processing layer realize interaction through data signals in real time;
the hardware layer comprises a microwave radar, an LED induction screen and an intersection signal lamp; the microwave radar is used for realizing full-coverage real-time monitoring of the vehicle passing condition of the whole line of the overhead expressway, and the LED induction screens are installed at the entrance of an ascending ramp and the exit of a descending ramp of the overhead expressway;
it should be noted that, in a specific embodiment, taking the uplink direction as an example, the microwave radar is installed on a roadside street lamp rod, the arrangement distance between the front radar and the rear radar is a, where a is generally 100 meters, the value of a is adjusted according to the actual situation, and the specific numerical value is given by the processing layer; in a specific operation process, the overlapping of the front and the rear radar detection ranges is realized by adjusting a proper angle without dead angles, so that the full-coverage real-time monitoring of the overhead expressway all-line vehicle passing condition is realized;
the LED inducing screen is arranged at an ascending ramp entrance and a descending ramp exit of the elevated expressway in a vertical rod mode, the LED inducing screen at the descending ramp exit displays 'front congestion and can detour to an ascending ramp in front' according to the shunting condition of vehicles, the LED inducing screen at the ascending ramp entrance respectively displays 'front congestion, forbids driving into the ramp' and 'no congestion in front' according to different conditions of current limiting and drainage of the vehicles, and the LED inducing screen can enter the elevated expressway on the ramp;
the signal lamps of the intersections are positioned on urban roads where the ascending and descending ramps of the viaduct are connected with the ground, when local congestion and queuing occur on the viaduct, the signal lamps can be in associated control with the ramps for shunting and draining the viaduct, and the viaduct shunting and draining vehicles can be guaranteed to rapidly pass by adjusting the green light time in the same direction for passing the viaduct and coordinating the green light signals of a plurality of intersections;
the processing layer comprises a rule setting module, an analysis processing module and a decision making module, the rule setting module is used for setting a passing guide rule, and specifically, the process of setting the passing guide rule by the rule setting module comprises the following steps:
dividing the area: the rule setting module acquires the total line length of a main line of the whole overhead expressway, and sets the length b of a detection area, wherein the value of b is generally 2 meters, the value of b is adjusted according to the actual condition, and the specific numerical value is set by the rule setting module;
and (3) period setting: the method comprises the following steps that a rule setting module obtains the length of a detection area and gives a statistical period T of a microwave radar, wherein the value of T is generally 10s, the value of T is adjusted according to the actual situation, and a specific numerical value is set and given by the rule setting module; the processing layer sends the statistical period T to the hardware layer through data signal interaction;
threshold establishment: the rule setting module sets a speed threshold V of the parcel, wherein the value of V is generally 5km/h, the value of V is adjusted according to the actual situation, and the specific numerical value is set and given by the rule setting module; the zone speed threshold is used for judging the local congestion queuing condition of the road section at the moment; the rule setting module sends the established speed threshold V of the film area to the analysis processing module;
the analysis processing module is used for receiving data signals sent by a hardware layer in real time and completing the traffic guidance analysis by combining with the rule setting module, and specifically, the process of the analysis processing module for realizing the traffic guidance analysis comprises the following steps:
the method comprises the following steps: the microwave radar detects the real-time speed of each time interval, each detection area and each vehicle in real time, and sends the detected real-time speed of each time interval, each detection area and each vehicle to the analysis processing module in combination with the statistical period T set by the rule setting module;
step two: the analysis processing module calculates the average speed of the vehicle in each detection area in the statistical period T; the analysis processing module compares the average speed of the vehicle with a parcel speed threshold;
step three: when the average speed of the vehicles in the detection zone is less than or equal to the zone speed threshold value, marking the detection zone as a congestion zone;
when the average speed of the vehicles in the detection section is greater than the section speed threshold value, marking the detection section as a normal section;
step four: the analysis processing module sends the jammed section and the normal section to the decision making module.
It should be further explained that the congested area and the normal area are a dynamic change process of growth and dissipation.
The decision making module is used for receiving the signals sent by the analysis processing module and making a traffic guidance decision, and the specific process comprises the following steps:
step S1: the decision making module receives the jammed sub-areas and the normal sub-areas sent by the analysis processing module, and merges adjacent detection sub-areas belonging to the same state and marks the detection sub-areas as jammed road sections or normal road sections;
step S2: the decision making module acquires the distance between the adjacent congested road sections, marks the distance as a buffer distance, and merges the adjacent congested road sections when the buffer distance is smaller than a guide threshold distance; acquiring a queuing starting point and a queuing end point of a congested road section;
step S3: the decision making module shunts a downstream ramp junction in a range of c meters (c is 1000 meters and can be adjusted according to actual conditions) behind a congestion road section and a queuing terminal which are detected in real time in advance, and prompts 'congestion ahead and detour to an upstream ramp ahead' through an LED induction screen, all the upstream ramp roads in the range are limited, and prompts 'congestion ahead and no-drive-in ramp' through the LED induction screen;
the first ascending ramp port outside the range d meters (the value of d is 200 meters and can be adjusted according to actual conditions) in front of the queuing starting point is drained in time, and an LED induction screen prompts that 'no congestion exists in front and the ramp can enter an overhead state';
step four: the decision making module performs relevant control on the intersection signal lamps to ensure that vehicles can timely bypass an overhead local congestion road section, quickly pass to the next upstream turn crossing without congestion in front through green wave coordination linkage of the ground signal lamps, and re-enter the overhead passage.
In a specific embodiment, as shown in fig. 1, in combination with fig. 2 to 4, an overhead expressway traffic guidance method for avoiding local congestion queuing is provided as an embodiment of another aspect of the present invention, and the method includes the following steps:
firstly, as shown in fig. 2, the equipment installation of an overhead expressway pass-through guidance system for avoiding local congestion queuing is completed;
secondly, dividing the elevated expressway into a detection area every 2m in length range in the longitudinal direction as shown in fig. 3;
then, detecting the real-time speed of each time interval, each section and each vehicle of the elevated expressway by using the installed microwave radar detection equipment, and counting the average speed of each section every 10 seconds;
judging the average speed and the 5km/h in a block, if the average speed in a certain block is less than or equal to 5km/h, judging that a local congestion queuing event occurs in the block, monitoring the growth and dissipation dynamic change process of local congestion queuing of the elevated expressway through the real-time detection of a plurality of continuously detected block queuing conditions, and then dynamically guiding the vehicles passing through the elevated expressway in real time through the associated control of elevated ascending and descending ramps, an LED guide screen and intersection signal lamps.
Because local congestion queuing is a process that vehicles come from behind and dissipated in front continuously, the flow of vehicles passing through the overhead express way at a certain distance in front of and behind the local congestion needs to be guided and controlled.
As shown in fig. 4, when a local congestion queuing event is detected in the AB segment, shunting and current-limiting control is performed on an upstream ramp and a downstream ramp within a range of 1000 meters (which can be adjusted according to actual conditions) behind the AB segment and a terminal point B, at this time, an LED inducing screen of the upstream ramp prompts 'congestion ahead, no entrance into the ramp', and congestion queuing length increase is avoided; the down ramp II is provided with an LED guide screen for prompting that the vehicle is congested in the front and can bypass to an upper ramp in the front, and the vehicle is prompted to get off the overhead in advance so as to avoid congested road sections; the processing mode of the ascending ramp (c) is the same as that of the ascending ramp (i);
meanwhile, the first uplink ramp out of the range of 200 meters in front of the starting point A (which can be adjusted according to actual conditions) is subjected to flow guiding control, no treatment is carried out on the downlink ramp, and the LED guiding screen does not display guiding information at the moment; and the LED guide screen prompts that no congestion exists in the front and the vehicles can enter the overhead passage on the ramp, and the vehicles diverted from the rear part after local congestion queuing are guided back to the overhead express way for passage again.
In addition, the green signal ratio of the signal lamps at the intersection where the vehicles guided to the ground pass is adjusted and the green signals at the multiple intersections are coordinated and controlled, so that the vehicles branched from the overhead expressway can obtain enough green time and continuously pass through the green lamps, and the vehicles can quickly pass through the ground road intersection and are timely guided back to the overhead expressway for passing.
The method shown in fig. 4 distinguishes between the possible occurrence of multiple partially congested queuing events. The processes are changed in real time according to dynamic increasing and dissipating conditions of local congestion queuing of the overhead expressway, the linked ramps, the LED guidance screens and the intersection signal lamps are gradually restored to normally operate along with the local congestion queuing dissipating, and after the local congestion queuing is completely dissipated, all the linked ramps, the LED guidance screens and the intersection signal lamps are completely restored to the normal operating state.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.
Claims (6)
1. An overhead expressway traffic guidance system for avoiding local congestion queuing is characterized by comprising a hardware layer and a processing layer, wherein the hardware layer and the processing layer realize interaction through data signals in real time;
the hardware layer comprises a microwave radar, an LED induction screen and an intersection signal lamp; the microwave radar is used for realizing full-coverage real-time monitoring of the vehicle passing condition of the whole line of the overhead expressway, and the LED induction screens are installed at the entrance of an ascending ramp and the exit of a descending ramp of the overhead expressway; the signal lamp of the intersection is positioned on the urban road where the ascending and descending ramps of the elevated frame are connected with the ground;
the processing layer comprises a rule setting module, an analysis processing module and a decision making module, the rule setting module is used for setting a passing guide rule, the analysis processing module is used for receiving data signals sent by a hardware layer in real time and finishing passing guide analysis by combining the rule setting module, and the decision making module is used for receiving the signals sent by the analysis processing module and making a passing guide decision.
2. The overhead expressway guidance system for avoiding local congestion and queuing as claimed in claim 1, wherein the microwave radar is mounted on a roadside streetlamp member, the arrangement distance between the front and rear radars is a, the value of a is adjusted according to actual conditions, and the specific numerical value is given by the processing layer;
the front and the back radar detection ranges are partially overlapped without dead angles by adjusting the angle, and then the full-coverage real-time monitoring of the overhead expressway all-line vehicle passing condition is realized.
3. The system as claimed in claim 1, wherein when the local congestion queuing occurs, the system performs the associated control with the ramp of overhead diversion and diversion by adjusting the green light time of the overhead passing in the same direction and coordinating the green light signals at a plurality of intersections.
4. The overhead expressway traffic guidance system avoiding local congestion queuing of claim 1, wherein the process of setting the traffic guidance rules by the rule setting module comprises the following steps:
dividing a slice region; the rule setting module acquires the length of the whole line of the main line of the whole line overhead expressway, sets the length b of the detection area, and the value of b is adjusted according to the actual condition and is set by the rule setting module;
setting a period; the rule setting module acquires the length of the detection area and gives a statistical period T of the microwave radar, the value of the T is adjusted according to the actual situation, and the specific numerical value is set and given by the rule setting module; the processing layer sends the statistical period T to the hardware layer through data signal interaction;
establishing a threshold value; the rule setting module gives a speed threshold V of the film area, the value of V is adjusted according to the actual situation, and the specific value is set and given by the rule setting module; the rule setting module sends the established parcel speed threshold V to the analysis processing module.
5. The system of claim 1, wherein the process of implementing traffic guidance analysis by the analysis processing module comprises the following steps:
the method comprises the following steps: the microwave radar detects the real-time speed of each time interval, each detection area and each vehicle in real time, and sends the detected real-time speed of each time interval, each detection area and each vehicle to the analysis processing module in combination with the statistical period T set by the rule setting module;
step two: the analysis processing module calculates the average speed of the vehicle in each detection area in the statistical period T; the analysis processing module compares the average speed of the vehicle with a parcel speed threshold;
step three: when the average speed of the vehicles in the detection zone is less than or equal to the zone speed threshold value, marking the detection zone as a congestion zone;
when the average speed of the vehicles in the detection section is greater than the section speed threshold value, marking the detection section as a normal section;
step four: and the analysis processing module sends the congestion block area and the normal block area to the decision making module.
6. The system according to claim 1, wherein the decision-making module is configured to receive the signal sent by the analysis processing module and make a traffic guidance decision, and the process includes the following steps:
the decision making module receives the jammed sub-areas and the normal sub-areas sent by the analysis processing module, and merges adjacent detection sub-areas belonging to the same state and marks the detection sub-areas as jammed road sections or normal road sections;
the decision making module acquires the distance between the adjacent congested road sections, marks the distance as a buffer distance, and merges the adjacent congested road sections when the buffer distance is smaller than a guide threshold distance; acquiring a queuing starting point and a queuing end point of a congested road section;
the decision making module shunts the congestion road section detected in real time and the downlink ramp junction within a range of c meters behind the queuing terminal point in advance, and prompts 'congestion ahead and detouring to an upper ramp ahead' through an LED induction screen, all the upper ramps within the range are limited, and prompts 'congestion ahead and no-entry ramp' through the LED induction screen;
the first ascending ramp port outside the range d meters ahead of the queuing starting point is drained, and an LED induction screen is used for prompting that no congestion exists ahead and the ramp can be loaded to an overhead;
and the decision making module performs associated control on the intersection signal lamp.
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| CN117975737A (en) * | 2024-04-02 | 2024-05-03 | 北京中交华安科技有限公司 | Vehicle active guidance and intelligent control method for highway interweaving area |
| CN117975737B (en) * | 2024-04-02 | 2024-05-31 | 北京中交华安科技有限公司 | Vehicle active guidance and intelligent control method for highway interweaving area |
| CN118379883A (en) * | 2024-06-25 | 2024-07-23 | 成都交投信息科技有限公司 | Traffic signal lamp multi-agent cooperative control method based on data driving |
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