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96results about How to "Reduce traffic delays" patented technology
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Intelligent going-out and best carport navigation system and navigation method thereof
ActiveCN103258438ARealize functionAvoid congested roadsIndication of parksing free spacesIntelligent lightingNavigation system
The invention discloses an intelligent going-out and best carport navigation system and a navigation method of the navigation system. The intelligent going-out and best carport navigation system comprises an optimal path recommendation unit, a traveling car real-time positioning device, a parking guidance master controller, a wireless carport probe, a wireless network communication unit, a central processing unit (CPU) and a liquid crystal touch screen. The best running route is timely recommended on a liquid crystal display by the optimal path recommendation unit according to real-time road conditions, and the optimal path recommendation unit helps an owner to keep away from a blocking road section, so that the owner can arrive at the destination at the top speed. The parking guidance master controller can provide convenient parking lot carport information on the liquid crystal display, so that the owner can find an appropriate parking lot and the best carport with a nearest road in a short time, troubles of the owner for finding the carport are removed accordingly, parking time is saved, and parking speed is quickened. The intelligent going-out and best carport navigation system and the navigation method achieve car dynamic route guiding and carport best guiding functions, provide accurate and comprehensive traffic guidance information on the liquid crystal display, and improve traveling and parking efficiency and quality.
Owner:SHANDONG ACAD OF SCI INST OF AUTOMATION
Height warning system
InactiveUS20120139756A1Traffic delay be reduceEasily instalArrangements for variable traffic instructionsDetection of traffic movementMotor vehicle partDriver/operator
A multi-sensory height warning system for informing a driver of a motor vehicle of the proximity of an overhead obstruction in the path of the vehicle that will contact the vehicle that has:(a) a stationary height measuring device that is activatable by a passing vehicle that exceeds a predetermined height(b) a signal generator connected to the stationary height measuring device that is activated by the stationary height measuring means when a passing vehicle exceeds a predetermined height and subsequently activates a warning sound generator and lights; and(c) an overhead physical barrier that is spaced across the roadway a distance after the position of the plurality of lights.
Owner:DJURKOVIC ISMET N
Signal control method for high density road grid in traffic rush hour
InactiveCN101477747AReduce traffic demandAffect normal trafficControlling traffic signalsControl signalTraffic dynamics
The invention provides a method for controlling signals in a high-density road network during traffic peak. According to the total of traffic flows in the high-density road network, the method collects basic data about the high-density road network, which includes traffic static data, traffic dynamic data, and decision-making data from a decision maker, wherein, both the traffic static data and the decision-making data from the decision maker are classified as static data which is acquired from a static database of the high-density road network; the traffic dynamic data is classified as dynamic data which is gathered through traffic flow detection equipment; and a signal control scheme characterized by relatively long green light time length and red light time length is generated and applied to all signal intersections within the high-density road network. By controlling the total of the traffic flows within the high-density road network and realizing coordination among the intersections, the invention achieves the effects of improving the circulation efficiency of the traffic flows at all the intersections within the high-density road network during the traffic peak and reducing delays at the intersections for vehicles, thereby realizing efficient operation of the high-density road network.
Owner:SOUTHEAST UNIV
Intelligent method for detecting traffic accident at night
InactiveCN103366571AImprove work efficiencyReduce work intensityDetection of traffic movementCharacter and pattern recognitionTraffic delayVideo monitoring
The invention provides an intelligent method for detecting a traffic accident at night. The method comprises the following steps: acquiring a plurality of monitoring video images of a vehicle during driving at night, and processing the monitoring video images so as to acquire a plurality of binary images; judging car light of the vehicle from the binary images, and determining the position of the vehicle according to the car light of the vehicle; establishing a lane model according to the position of the vehicle, and establishing an image coordinate for the vehicle according to the lane model; acquiring the driving track and driving speed of the vehicle according to the image coordinate and the lane model; and judging whether the vehicle violates traffic regulations according to the lane model, and the driving track and driving speed of the vehicle. According to the intelligent method for detecting the traffic accident at night provided by the embodiment of the invention, the working efficiency of existing road video monitoring is improved, the working strength of monitoring personnel is reduced, and meanwhile traffic delay caused by traffic accidents is reduced so as to prevent secondary accidents.
Owner:HENAN ZHONGYUAN EXPRESSWAY +1
Crack self-healing bituminous concrete and preparation method thereof
The invention relates to a crack self-healing bituminous concrete and a preparation method thereof. The bituminous concrete comprises coarse aggregate, fine aggregate, fillers, pitch, rigid fiber and flexible fiber, wherein the mixing amount of the rigid fiber is 0.50-2.5wt.% of the total amount of the coarse aggregate, the fine aggregate, the fillers and the pitch, and the mixing amount of the flexible fiber is 0.10-0.35wt.% of the total amount of the coarse aggregate, the fine aggregate, the fillers and the pitch. The preparation method of the concrete comprises the steps of weighing dried aggregates, placing the aggregates in a material containing disk, mixing the aggregates uniformly, preheating in a drying oven to the temperature of 180 DEG C, and heating the fillers separately to the temperature of 180 DEG C; preheating the pitch to the temperature ranging between 160 DEG C and 175 DEG C; drying the rigid fiber and the flexible fiber respectively for backup use according to the requirement; and firstly mixing the rigid fiber into the mixed aggregate with blending, then blending the aggregate and the liquid pitch, then blending with the fillers, then blending with the flexible fiber, and finally forming the bituminous concrete. According to the bituminous concrete and the preparation method, the low-temperature cracks of bituminous pavements are reduced to the minimum and can be healed spontaneously, early-stage cracking is avoided effectively, the service life of the bituminous pavements is prolonged, and the project implementation is convenient.
Owner:ZHENGZHOU UNIV
System and method for train operation approaching grade crossings
ActiveUS7832691B2Reduce traffic delaysFast accelerationSignal operation from vehicleVehicle route interaction devicesMotion sensingPredictive controller
A system and method that enables trains to rapidly accelerate through grade crossings from station stops or civil speed restrictions is disclosed. In some embodiments, equipped trains and grade-crossing controllers communicate wirelessly to address operational limitations pertaining to the grade crossings. In conjunction with the train's equipment, conventional crossing controllers are augmented with a communications capability and logic to accept commands to operate in a “Prediction” mode or a “Motion-Sensing” mode. The Prediction mode is the default operating mode for conventional constant-warning grade-crossing prediction controllers. The Motion-Sensing mode is an operating mode whereby the crossing is actuated as soon as an approach circuit detects train motion.
Owner:AUSTRALIAN RAIL TRACK CORP
Method for determining length of variable guide lane for signal control intersection approach
InactiveCN103258436AReduce traffic congestionImprove operational efficiencyControlling traffic signalsArrangements for variable traffic instructionsTraffic volumeData information
The invention belongs to the field of road traffic sign marked lines, and discloses a method for determining the length of a variable guide lane for a signal control intersection approach. The method comprises the steps of first acquiring traffic data information that the variable guide lane steers in a corresponding direction, then converting obtained traffic volume relevant to a variable guide lane steering lane into an equivalent standard small automobile traffic volume, further utilizing an M / M / N model in the queuing theory to calculate the number of queuing vehicles behind a stop line of the signal control intersection approach according to a multi-path queuing multi-channel system and with combination of an approach lane queuing imbalance coefficient, and lastly converting the vehicle number into vehicle average queuing length in meter to serve as a value of the length of the variable guide lane for the signal control intersection approach. The method for determining the length of the variable guide lane for the signal control intersection approach can enable the vehicles on the upper stream of the variable guide lane to be smoothly driven into the intersection approach so as to improve approach traffic efficiency.
Owner:SOUTHEAST UNIV
System and Method for Train Operation Approaching Grade Crossings
ActiveUS20090184214A1Reduce traffic delaysFast accelerationSignal operation from vehicleVehicle route interaction devicesMotion sensingPredictive controller
A system and method that enables trains to rapidly accelerate through grade crossings from station stops or civil speed restrictions is disclosed. In some embodiments, equipped trains and grade-crossing controllers communicate wirelessly to address operational limitations pertaining to the grade crossings. In conjunction with the train's equipment, conventional crossing controllers are augmented with a communications capability and logic to accept commands to operate in a “Prediction” mode or a “Motion-Sensing” mode. The Prediction mode is the default operating mode for conventional constant-warning grade-crossing prediction controllers. The Motion-Sensing mode is an operating mode whereby the crossing is actuated as soon as an approach circuit detects train motion.
Owner:AUSTRALIAN RAIL TRACK CORP
Intersection with optimized settings and traffic control method of the intersection
InactiveCN103046444AHigh trafficTake advantage ofControlling traffic signalsRoadwaysTraffic delayEngineering
The invention relates to an intersection with optimized settings. Central double solid lines or an isolated column are / is displaced and arranged to form the intersection with more exit lanes and few entrance lanes; each of a left traffic lane and a right traffic lane is newly provided with a stop line at a distance away from the stop line of the intersection, and an exit or an entrance is arranged behind each stop line; and a car lane dividing line of one exit lane is changed to the central double solid lines or the isolated column, at least one traffic lane is always kept on the left of the car lane dividing line to serve as the exit lane, and the traffic lane on the right is set to a dual-function traffic lane. The dual-function traffic lane and the right traffic lane can be used as the exit lane or the entrance lane for related driving cars under the situation of separated traffic control time. The invention further provides a traffic control method, phase positions are divided into four groups based on a signal machine or a signal control center arranged at the intersection with the optimized settings, each group has four phase positions for connecting with corresponding signal lamps of the intersection, and the four groups in traffic are sequentially and cyclically executed, so that the entrance and the exit lanes of the passage intersection can be increased to the greatest extent, the passing capacity and the passing quantity are improved, the jam can be effectively relieved, and the traffic delay, the oil consumption and the pollution can be reduced.
Owner:黄宝文
Novel traffic layout and control method for city road net and crossing
InactiveCN1766232AReduce the number of phasesRealize "green wave" controlRoad vehicles traffic controlTraffic signalsTravel modeSimulation
The invention discloses a traffic organization design and control improvement method of intersection passing capacity and road net traffic content in the traffic design and control domain, which is characterized by the following: adapting main road junction peripherial road net to form a micro-circulation system to finish steering task of each direction; adapting the ways such as í‹stop turning left or rightíŒ, í‹one way runningíŒ and so on to simplify the traffic intersection collision to improve the traffic intersection passing capacity; utilizing í‹green waveíŒ to reduce the parking frequency and driving delay. The program is fit for mutual matching of different grades, which realizes the city traffic harmonious development.
Owner:钱红波
Adaptive truffic control system and method
InactiveCN1619551AImprove traffic capacitySolving traffic signal timing problemsRoad vehicles traffic controlSpecial data processing applicationsTraffic signalControl system
The present invention relates to an adaptive traffic control system and its method. It is characterized by that its core technique adopts traffic signal engineering technique, and adopts mixed traffic control algorithm, and provides an algorithm for controlling motor vehicle, pedestrain and bicycle so as to form actual control function. Said invention can be used for making mixed traffic control.
Owner:QINGDAO HISENSE TRANS TECH
Discovery period configuration for small cell on/off
InactiveUS20160295500A1Reduce traffic delaysNetwork traffic/resource managementAssess restrictionComputer science
In one embodiment, an apparatus, a system or a network (1) sets a discovery period for a node (2B). The discovery period is a time period in which the node (2B) sends a signal (e.g., PSS, SSS, and CRS) necessary for cell detection and radio measurement performed by a user equipment (3A) before a cell (20B), controlled by the node (2B), is to be turned on in order to send a signal (e.g., data signal) for either or both of user data reception and transmission. It is achieved, for example, that the user equipment (3A) is able to detect the signal (e.g., PSS, SSS, and CRS) for cell detection and radio measurement in the discovery period by using legacy behavior of radio measurement.
Owner:NEC CORP
Urban area traffic signal control method based on short-time traffic flow prediction
ActiveCN113327416AImprove securityIncrease green band widthControlling traffic signalsInternal combustion piston enginesVisualizationVideo recognition
The invention belongs to the field of intelligent traffic and relates to an urban area traffic signal control method based on short-time traffic flow prediction. The method comprises the following steps of acquiring the traffic state information of each intersection and related lanes by using cameras configured at the intersections; detecting traffic data of the current period based on YOLOv4 video identification; establishing a ConvLSTM model based on historical data according to the flow at the previous moment, predicting the traffic condition of the region in the next period, and correcting and feeding back the traffic condition in real time; establishing a single-point intersection timing model according to the predicted flow data, and solving and optimizing timing; carrying out regional sub-region division on the intersection group according to the intersection association degree; the saturation degree of the intersection being judged by quantifying the effective green light time loss, a regional coordination control model being established, and the current scheme being optimized; a system interface program being written, function visualization being carried out, real-time feedback being obtained, and humanized management being achieved. According to the method, regional linkage control is realized, and accuracy and safety of regional intersection control are improved.
Owner:BEIJING JIAOTONG UNIV
Main line green wave coordination control signal time method for optimizing exhaust gas emission
ActiveCN103593986AExcellent delayReduce pollutionControlling traffic signalsEvolution algebraControl signal
The invention discloses a main line green wave coordination control signal time method for optimizing exhaust gas emission. The method comprises the following steps that first, the basic traffic parameter of a main line is surveyed and obtained, and a vehicle exhaust gas emission calculating platform is initialized; second, the basic parameter of a multi-objective genetic method is set, and a population of the multi-objective genetic method is initialized; third, based on the platform, the adaptive degrees of all individuals in the population are calculated; fourth, the non-domination sequence and the visual adaptive degree of the individuals in the population are calculated, a progeny population is generated through genetic section, genetic cross and genetic variation, and the adaptive degrees of all individuals of the progeny population are calculated; fifth, the population and the progeny population are combined to obtain a new population, the non-domination sequence and the congestion degree of all individuals of the new population are calculated, the individuals are chosen based on the non-domination sequence and the congestion degree, and the next generation population is obtained; six, when evolution algebra is larger than the best evolution algebra, execution of the method is completed, all the individuals with the non-domination sequence being equal to 1 in the last generation population are used as a final noninferior solution to be output, and the timing scheme in which the vehicle average delay and vehicle exhaust gas emission are comprehensively considered is obtained.
Owner:SOUTHEAST UNIV
Multi-level early warning system and method for construction road based on vehicle road cooperation
ActiveCN108665702AControl Confluence BehaviorEnsure safetyControlling traffic signalsDetection of traffic movementInformation processingTraffic delay
The invention discloses a multi-level early warning system and method for a construction area based on vehicle road cooperation technology under a dynamic traffic flow. The system comprises a trafficflow information collection module which is used for collecting traffic flow information of a construction road; an early warning information processing module which is used for obtaining early warning parameter information with combination of the construction position and the vehicle information according to the traffic flow information and for determining whether to sent early warning information with combination of the early warning parameter information; and a vehicle-mounted control module which is used for collecting the vehicle information and sending the vehicle information to the early warning information processing module and receiving the early warning information. The system guides the driver to execute the driving strategy under different traffic conditions by real-time monitoring and tracking of the road traffic state and the current state of the vehicle, effectively controls the random convergence behavior of the vehicle, reduces the traffic delay caused by the random lane change, and improves the traffic efficiency. Meanwhile, through multi-level warning, the possible traffic accidents are reduced and the safety of the construction area is ensured.
Owner:BEIJING JIAOTONG UNIV
Traffic organization method under traffic event condition on basis of traffic scene radar
ActiveCN104952250AQuick groomingImprove decision-makingArrangements for variable traffic instructionsDetection of traffic movementMobile vehicleRadar
The invention belongs to the technical field of city expressway traffic management, and particularly relates to a traffic organization method under the traffic event condition on the basis of traffic scene radar. The method comprises the following steps of installing the traffic scene radar in an expressway region to be measured, and debugging and setting the detection range; using the traffic scene radar to obtain positioning data of moving vehicles in a detection region; calculating the running speed of the single moving vehicle in the detection region at one time interval; calculating the average running speed of the road section in the detection region at one time interval; judging the traffic event; calculating the duration of the traffic event; estimating the influence range of the traffic event; performing traffic organization under the traffic event. The method has the advantages that the traffic organization under the traffic event condition of the expressway can be realized by using the traffic scene radar, and a reliable and effective method is provided for the city expressway traffic manager to fast perform event disposal to take reliable traffic organization measures for reducing the event loss and for reducing the influence caused by the event after the occurrence of the traffic event.
Owner:ANHUI SUN CREATE ELECTRONICS
Novel regional road traffic jam information prompting system
InactiveCN103839419AReduce traffic delaysTimely changeArrangements for variable traffic instructionsInformation display systemsComputer science
The invention discloses a novel regional road traffic jam information prompting system which comprises a region detection system, a control center and an information displaying system, wherein road condition information is acquired through the detection system, detection information is processed through the control center to generate traffic jam information of the current road, an information displaying board is arranged at the position through which a vehicle can select to enter the region, traffic jam information of the region is transmitted to the information displaying board through communication, a vehicle driver entering the region can be reminded of the current road condition through the displaying of road information, obtain jam information of the selected road and change driving routes in time, and then parking delay caused by jamming is reduced.
Owner:XIAN JIALE CENTURY ELECTROMECHANICAL TECH
Production and construction process of colored asphalt road
InactiveCN105218000AImprove road performanceImprove high temperature stabilityIn situ pavingsTraffic delayBound property
The invention relates to colored asphalt, particularly to a colored asphalt road applicable to various environments and a construction process thereof. The construction process comprises the following steps: preparing materials; heating aggregates; feeding color powder; producing colored asphalt; discharging and detecting. The colored asphalt road prepared by adopting the production process and the construction process is good in road application performance and good in high temperature stability, water damage resistance and durability at different temperatures and in different external environments, has no phenomenon such as deformation, dropping of the asphalt and the like, has good binding property with a basic layer, has bright and durable color, is not faded, can resist the high temperature of 77 DEG C and low temperature of -23 DEG C and is fast in construction period, convenient and rapid to produce, fast to construct, high in efficiency and capable of effectively reducing the traffic delay caused by the construction.
Owner:苏州三新路面工程有限公司
Traffic organization and signal control method facing left and right type staggered intersection
ActiveCN105551271AImprove traffic efficiencyReduced all-red clearing timeControlling traffic signalsTraffic capacityTraffic optimization
The invention discloses a traffic organization and signal control method facing a left-and-right type staggered intersection. The basic principle of the invention is to, by targeting the left-to-right type staggered intersection, optimally use the intersection staggering space and the optimally design the signal timing of the intersection on the basis of the traditional intersection design. The traffic organization and signal control method fully uses the time space resource of the intersection, reduces the purging time in a signal period, and improves the traffic capacity of the left-to-right type staggered intersection. In order to achieve that, the traffic organization and signal control method disclosed by the invention comprises steps of performing data collection on the related parameters of the intersection, performing intersection traffic organization design, performing the intersection signal optimization timing, and determining whether the intersection satisfies the preset condition and chooses the corresponding scheme.
Owner:ZHEJIANG UNIV
Traffic signal control method and system based on random strategy gradient, and electronic equipment
ActiveCN112614343ASimple parameterizationFast convergenceGeometric CADControlling traffic signalsTraffic signalControl signal
The invention discloses a traffic signal control method and system based on a random strategy gradient, and electronic equipment. The method comprises steps of obtaining the static road network data of at least one control signal intersection; visually drawing a traffic simulation road network according to the static road network data; acquiring real-time traffic operation state data of at least one control signalized intersection; performing parameter check on simulation parameters in the traffic simulation road network according to the traffic operation state data to obtain an optimized traffic simulation road network; inputting a traffic state obtained by observing the optimized traffic simulation road network into a value network to obtain an evaluation value of each signal control scheme in the traffic state; inputting the traffic state into a strategy network to obtain a probability value of each signal control scheme; and updating parameters of the strategy network through a random strategy gradient based on the evaluation value of each signal control scheme in the traffic state and one signal control scheme. According to the method provided by the invention, a problem of dimension explosion of signal control can be solved.
Owner:DUOLUN TECH CO LTD
Urban main road left forbidding and left turning protection phase setting method
ActiveCN106257554AImprove traffic capacityReduce traffic delaysControlling traffic signalsDetection of traffic movementTraffic volumeTraffic congestion
The invention discloses an urban main road left forbidding and left turning protection phase setting method. Firstly the present flow, the number of lanes and signal timing plans of all phases of all intersections are acquired and inputted as for multiple continuous signal control intersections of urban main roads; then the redistribution result of the flow and the number of lanes after the intersection left forbidding or setting the left turning protection phase is calculated, and the green signal ratio and the green light time of each phase of the intersections are calculated according to the redistribution result; and finally a calculation model for the optimal setting location of urban main road left forbidding and the left turning protection phase is established. According to the method, congestion of the main roads caused by large demand of left turning traffic flow of the intersections of the main roads can be mainly alleviated, and the traffic capacity of the intersections of the main roads is ensured to be mutually matched by reasonably setting main road left forbidding and the left turning protection phase so that traffic congestion can be alleviated and the traffic delay can be reduced.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
Traffic event influence range calculation method based on traffic scene radar
ActiveCN104952258AFast and reasonableAvoid congestionRoad vehicles traffic controlOperating speedReal-time computing
The invention belongs to the technical field of city expressway traffic management, and particularly relates to a traffic event influence range calculation method based on traffic scene radar. The method comprises the following steps of installing the traffic scene radar in an expressway region to be detected, and debugging and setting the detection range; using the traffic scene radar to obtain positioning data of moving vehicles in the detection region; calculating the running speed of the single moving vehicle in the detection region at one time interval; calculating the average running speed of the road section in the detection region at one time interval; adopting a threshold method for judging the traffic event; calculating the duration of the traffic event; obtaining the influence range of the traffic event. The method has the advantages that the influence range of the current traffic event can be fast known, so that a traffic manager can reasonably define the traffic flow division position of the current jamming road, the goals of preventing the occurrence of the secondary accidents and the jamming and reducing the influence of the accidents and the running delay are achieved, and the event disposal decision level of the traffic manager and the intellectualization level are improved.
Owner:ANHUI SUN CREATE ELECTRONICS
Multi-intersection signal timing system and method in network connection traffic environment
ActiveCN111768639AReduce traffic delaysImprove traffic efficiencyMathematical modelsDetection of traffic movementIn vehicleNetwork connection
The invention relates to a multi-intersection signal timing system and method in a network connection traffic environment, and the method comprises the steps that a vehicle-mounted sensor collects thecurrent state information and path planning information of a vehicle, and transmits the collected information to a traffic control center through a road side unit; the traffic control center establishes an MILP optimization model for actively controlling multi-intersection signal timing according to the collected current state information and path planning information of each vehicle, and solvesthe optimization model to obtain a signal timing scheme; and the traffic control center transmits the signal timing scheme to each intersection annunciator, and each intersection annunciator correspondingly executes the signal timing scheme, so that the multi-intersection signal timing process is completed. Compared with the prior art, evolution of the current state and the future state of the individual level of the vehicle is considered, the method is not limited to fixed phase combination and phase sequence, multi-intersection signal timing precision cooperation can be achieved, and vehiclepassing delay is reduced.
Owner:TONGJI UNIV
Advanced traffic control system for elevated line
InactiveCN1725261AIncrease profitImprove the level ofRoad vehicles traffic controlClosed circuit television systemsProcess systemsDriver/operator
An advanced traffic management system for overhead roads is composed of computer detection and control subsystem, a closed-circuit TV subsystem and an emergency phone subsystem, the three subsystems are made up of field devices and a central process system, among which, the field devices collect various site information, the central process systems are connected with the monitor center process system for analyzing and managing various traffic information.
Owner:上海市市政工程管理处 +1
Vehicle operation regulation and control method of urban road traffic system
InactiveCN108364490ARealize intelligent controlImprove operational efficiencyDetection of traffic movementTraffic capacityBoundary values
The invention discloses a vehicle operation regulation and control method of an urban road traffic system. The method comprises the steps that S1) a character or voice template is arranged in advance;S2) traffic data is collected and uploaded to a cloud server; S3) the cloud server receives the traffic data, and processes the traffic data on the basis of a neural network algorithm to obtain vehicle flowrate prediction data; S4) the cloud server transmits the vehicle flowrate prediction data to a device in the terminal side; S5) the device in the terminal side receives data returned from the cloud server, stores the data in a local storage device, and processes the data; and S6) whether the vehicle flowrate prediction data exceeds a threshold boundary value is detected, if YES, plan path information generated by the cloud server is issued to the device in the terminal side, and otherwise, the character template is presented in the device in the terminal side. The urban road traffic system can be regulated and controlled intelligently, traffic jam is predicted and prompted, and the driving safety and efficiency are improved.
Owner:佛山杰致信息科技有限公司
Method and terminal for urban road green wave band decision support based on floating vehicle technology
ActiveCN107945542AImprove traffic capacityReduce parking rates and traffic delaysControlling traffic signalsTraffic volumeService system
The present invention provides a method and a terminal for urban road green wave band decision support based on a floating vehicle technology. The method comprises the following steps of: obtaining acrossing position set according to obtained data information of a plurality of floating vehicles, wherein the crossing position set comprises crossing positions of a plurality of traffic lights; according to the crossing position set, obtaining a plurality of road sections; according to the data information of the plurality of floating vehicles, calculating average time of all the floating vehicles passing through each road section, and calculating one traffic flow of each road section; and if one difference of average time of each two adjacent road sections is in a preset first time range andone difference of traffic flows of each two adjacent road sections is in a preset flow range, determining that each two adjacent road sections are road sections being suitable for achieving a green wave band. The method and the terminal for urban road green wave band decision support based on the floating vehicle technology can provide an accurate green wave band road section for various trafficinformation service system so as to effectively improve pass capability of a main road in an urban area, reduce the vehicle parking rate and the traffic delay and guarantee operation efficiency of a road network.
Owner:FUJIAN UNIV OF TECH
Rule-based automatic driving intersection vehicle lane changing control method
ActiveCN114613142AImprove traffic capacityReduce negative impactInternal combustion piston enginesDetection of traffic movementControl theoryIntelligent transport
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
Method and system to detect a security event in a packet flow and block the packet flow at an egress point in a communication network
InactiveUS8646081B1Avoid spreadingReduce traffic delaysMemory loss protectionUnauthorized memory use protectionPacket lossCommunication device
An ingress point receives a packet flow from a first communication device. The ingress point copies the packet flow, transmits the packet flow to an egress point over a network path, and processes the copy to determine if the packet flow represents a security event. If the packet flow represents a security event, the ingress point transmits a blocking instruction to the egress point over an alarm link and the egress point blocks the packet flow representing the security event. If the packet flow does not represent a security event, the egress point transmits the packet flow to a second communication device.
Owner:SPRINT CORPORATION
Traffic signal control method based on traffic flow conflict point occupancy rate at center of intersection
ActiveCN109841068AReduce traffic delaysIncrease profitControlling traffic signalsOccupancy rateTraffic delay
The invention discloses a traffic signal control method based on a traffic flow conflict point occupancy rate at the center of an intersection. The method comprises steps: 1, the occupancy value of atraffic flow conflict point is acquired; 2, the effective green light use time of each traffic flow is calculated; 3, the green light time allocated for each flow under the current signal control scheme is calculated; 4, the invalid green light time of each phase is calculated; 5, the green light time use rate of each phase is optimized according to a control target; and 6, a new signal control scheme is formed. The traffic signal control method based on the traffic flow conflict point occupancy rate at the center of the intersection has the beneficial effects that the green light use condition of each flow can be analyzed and calculated according to the occupancy rate condition of the traffic flow conflict point at the center of the intersection, on the basis, the green light time of eachphase in a signal control scheme is optimized, the use rate of the phase green light time is improved, empty release is reduced, and the traffic delays at the intersection are reduced.
Owner:GUANGDONG ZHENYE UCTRL TECH CORP LTD
Intersection signal control time period dividing method
InactiveCN110379184AReduce dependencyImprove reliabilityControlling traffic signalsDetection of traffic movementCluster algorithmTraffic delay
The invention provides an intersection signal control time period dividing method. The intersection signal control time period dividing method comprises the steps of: acquiring traffic flow data of anintersection in one day; converting the traffic flow data into traffic flow vectors, and acquiring a distance between every two adjacent traffic flow vectors; dividing a time period of a day into initial time segments based on a CUSUM time series segmentation algorithm based on big data; combining the initial time segments according to a preset manner to obtain combined time segments; adopting aclustering algorithm for classifying the combined time segments according to the distance between every two adjacent traffic flow vectors, so as to obtain the classified target time segment; and determining a signal control strategy of each segment according to the target time segment. The intersection signal control time period dividing method has low dependence on traffic information acquisition, has good reliability, can significantly improve the traffic passing capacity and effectively reduces the traffic delay.
Owner:SHANGHAI INST OF TECH
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