258 results about "Reversible lane" patented technology

The invention discloses a lane adjusting method for urban artery turning traffic. The method is used for relieving tidal flow in urban roads and mainly comprises the number of variable lanes in need of direction changing and a lane turning function determining method after lane adjustment. The method comprises that variable-direction traffic setting conditions of urban arteries are given, the number of variable lanes and the lane turning functions after lane adjustment are determined by combining control of tidal intersection signals, and intersection delay values are calculated and compared to obtain the lane adjusting method for urban artery turning traffic. According to the lane adjusting method, the intersection signal control and the variable-direction traffic technology are combined, so that the tidal traffic jam is relieved, the delay is reduced, and the utilization rate of existing road resources is improved effectively.

The invention discloses a reversible-lane-based intersection signal control method. The method comprises the following steps of, firstly, at eligible intersections, mounting detectors, and laying annunciators, main signal lights, pre-signal lights, reversible lane dynamic signs, wherein the annunciators are provided with computer programs, and the main signal lights, the pre-signal lights and the reversible lane dynamic signs are associated with reversible lanes; secondly, according to historical data, determining approaches where the reversible lanes can be arranged, and starting reversible lane control schemes; thirdly, according to the left turn and straight traffic flow of the approaches and the relation between the number of lanes and the saturation flow, judging the operating directions of the reversible lanes; lastly, according to the directions of the reversible lanes, determining appropriate signal matching schemes. The reversible-lane-based intersection signal control method can improve the traffic capacity of the intersections, reduce delay at the intersections and guarantee vehicle driving safety of the intersections.

The invention provides a control method for the signal timing design, the traffic signal lamp bank of reversible lanes and the lane signs of reversible lanes at the intersection of reversible lanes with/without the arrangement of a left-turn short lane. In consideration of the influence of a left-turn short lane on the saturation flow rate of an entrance lane, the phase effective green light time and the functions of reversible lanes are adopted as decision variables, and the minimization of the vehicle delay rate at the intersection and the maximization of the traffic capability at the intersection are adopted as objective functions. In this way, a signal timing optimized model system at the intersection is established based on the operational research and the traffic flow theory. Meanwhile, a specific design principle for designing the lane signs of reversible lanes is provided from the point of drivers. According to the traffic flow operating rule and the behavior characteristics of drivers, different coordination control rules for the traffic signal lamp bank of reversible lanes and the lane signs of reversible lanes are designed respectively for two conditions, namely the function invariable condition of reversible lanes and the function variable condition of reversible lanes during the control period switching process. The embodiments of the invention prove the feasibility and the validity of the above method. By adopting the above method, the intersection congestion problem caused by the tidal characteristics of the traffic flow can be effectively alleviated.

The invention relates to a Beidou visual fusion accurate lane identification and positioning method and an implementation device thereof. The Beidou visual fusion accurate lane identification and positioning method comprises the following steps: (1) lane detection: detecting and identifying lane lines and dividing the lanes; identifying current, left and right lane types, and determining the current lane of the vehicle; (2) performing map matching to obtain positioning information; determining a road where the vehicle is located, and extracting information such as road lane number, lane type,lane width, bus lane opening time and the like; measuring the vehicle speed, and obtaining BTD; (3) positioning correction: correcting a Beidou positioning result; and (4) monitoring and early warning, judging whether the vehicle runs on the road, and if so, capturing, identifying and uploading. By means of the Beidou visual fusion accurate lane identification and positioning method, a common lane, a bus lane, an emergency lane and a reversible lane can be accurately identified, meanwhile, different colors of masks are used for distinguishing, so as to provide a reference for a driver, and provide more accurate positioning for an auxiliary driving and navigation system.

The invention discloses a method for improving space resource utilization efficiency of an intersection entrance lane. The method for improving the space resource utilization efficiency of the intersection entrance lane includes that setting the left turn lane of the outermost side of the entrance lane into a reversible lane without changing the period and phase green light time, and changing functions of the reversible lane in real time so as to improve the space resource utilization efficiency of the same entrance lane of the intersection; gathering the left turn car traffic volume and straight going car traffic volume of the entrance lane in the signal period through a video detector, and changing a lane signal lamp and a direction indication signal lamp in the next period through numeric calculation and logical judgment so as to guide a vehicle to adapt to the lane conversion. The method for improving the space resource utilization efficiency of the intersection entrance lane balances the space resource utilization efficiency of different directions of lanes of the intersection, timely reduces the queuing time of the vehicle at the intersection and improves the traffic efficiency.

The invention discloses a method and device for adjusting lanes and signal lamp periods based on vehicle queue lengths. The method comprises the following steps that a video detecting device detects the instantaneous vehicle queue lengths of respective lanes; an analyzing unit calculates the average queue lengths of respective lanes with different lane attributes within set time; the analyzing unit calculates a ratio of the average queue lengths of respective lanes with different lane attributes; and a control unit adjusts a corresponding lane attribute or the corresponding period length of a corresponding signal lamp according to the ratio of the average queue lengths of respective lanes with different lane attributes. The method and device for adjusting lanes and signal lamp periods based on the vehicle queue lengths improve the passing efficiency of an intersection by means of the variable lanes and the variable signal lamp phase periods.

The invention discloses an adaptive control method for a variable lane, which comprises the following steps of: 1) taking a time occupancy ratio detected by a detector arranged on a road as an input of a BP neural network, wherein the output vector of the BP neural network is O=Formula and is 0 or 1; and 2) performing variable lane control by the following processes of: 2.1) if the current variable lane attribute is straight and the output vector is 1, changing the variable lane attribute into left turning from straight when a next straight phase reaches; if the output vector is 0, keeping the current variable lane attribute unchangeable; and 2.2) if the current variable lane attribute is left turning and the output vector is 1, changing the variable lane attribute into straight from left turning when the next left turning phase reaches; and if the output vector is 0, keeping the left turning attribute of the variable lane unchangeable. The method can effectively improve the utilization rate of the variable lane.

The invention discloses a signal control method for a variable lane. The signal control method comprises the following steps of: setting a time parameter of each signal lamp and calculating to acquire a forward running clearing time and a reverse running turn-off time; after a green lamp is turned off and a red lamp is turned on, recording first red lamp turn-on time in real time; detecting whether the red lamp turn-on time is greater than or equal to the forward running clearing time, repeating the detection step if a detection result is that the red lamp turn-on time is smaller than the forward running clearing time, and turning on a variable sign if the red lamp turn-on time is greater than or equal to the forward running clearing time; turning off the red lamp, turning on the green lamp and recording green lamp turn-on time in real time after the time for converting the signal lamp is up; and detecting whether the green lamp turn-on time is greater than or equal to the reverse running turn-off time, repeating the detection step if the detection result is that the green lamp turn-on time is not greater than or equal to the reverse running turn-off time, and turning off the variable sign if the green lamp turn-on time is greater than or equal to the reverse running turn-off time. By using the variable lane, the aims of fully utilizing an intersection lane, improving traffic capacity and reducing intersection parking, queuing and delay are fulfilled.

The present invention provides a vehicle road-borrowing passage method and a control center and belongs to big data processing field. According to the prior art, only early warning instructions can beprovided, vehicle road-borrowing passage cannot be coordinated and controlled, and as a result, safety and passage efficiency cannot be ensured, while, with the vehicle road-borrowing passage methodand the control center of the invention adopted, the problem in the prior art can be solved. The method includes the following steps that: the control center generates the first road-borrowing passagestrategy of a vehicle according to a road-borrowing need, the movement trend of the vehicle and preset traffic rules, wherein the road-borrowing need contains a reason for road-borrowing passage, andthe first road-borrowing passage strategy contains an instruction for controlling the road-borrowing passage of the vehicle; and the control center sends the first road-borrowing passage strategy tothe vehicle. The vehicle road-borrowing passage method provided by the embodiments of the present invention is used for temporary road-borrowing passage and the road-borrowing passage of reversible lanes.

A variable lane splitting system comprises a lane divider, an annunciator, a detector and a controller. When the ratio between forward direction vehicle density and reverse direction vehicle density is larger than a reserved value interval, the controller is manually or automatically operated to control one or more annunciators, with reverse direction driving signals, of a sub-lane to give turn-making driving signals and forward direction driving signals in sequence; when the ratio between the forward direction vehicle density and the reverse direction vehicle density is smaller than the reserved value interval, the controller is manually or automatically operated to control one or more annunciators, with forward direction driving signals, of a sub-lane to give turn-making driving signals and inverse direction driving signals in sequence; when the ratio between the forward direction vehicle density and the reverse direction vehicle density is in the reserved value interval, the controller does not change the driving signals given by the annunciators.

The invention discloses a direction switching method for a variable lane of an urban road, which is oriented to crossing signal timing dial and a variable lane indicating lamp position and is mainly used for switching from bidirectional balanced traffic to bidirectional unbalanced traffic. The invention aims to complete direction switching of a variable lane of an urban road in two signal periods, ensure smooth lane change of vehicles on the variable lane, reduce wrong lane change to the maximum extent and establish a direction switching method for a variable lane of an urban road, which is oriented to crossing signal timing dial and a variable lane indicating lamp position. The method comprises the following specific steps of: arranging indicating lamps on the variable lane of the urban road; arranging a guide lane on a crossing through which the variable lane passes; performing a direction switching process on the variable lane of the urban road; and determining whether an indicating lamp arranging position on the variable lane in a certain section meets a certain requirement.

The invention discloses an intersection integrated control system which comprises a variable lane indicating device, wherein the variable lane indicating device is configured for forming all lanes between the variable lane indicating device and a stop line into standby lanes; and the variable lane indicating device is used for controlling the time for vehicles to enter the standby lanes according to traffic flow and controlling the guide directions of all the lanes among the standby lanes. According to the invention, the traffic jam problem caused by conditions such as large traffic flow, conflict between vehicle travel directions and the like at an intersection can be solved.

The invention discloses a variable lane driving direction switching method based on the vehicle position on a tracking lane. According to the method, an LED light is applied to the field of lane markings for the first time; a variable lane gantry and a signal light are used as road guidance; according to the real-time locations of vehicles on a road and the road conditions, by tracking the location of the last vehicle LV in a variable lane, the gantry signal light and dashed and solid lines of the lane markings are controlled; and the road resource behind the last vehicle LV driving in the original direction in the variable lane is fully used to improve the operation efficiency. The variable lane driving direction switching method provided by the invention is suitable for variable lane roads of a variety of numbers of lanes, and has the advantages of improved road utilization, good economic benefit, being universal and the like.

The invention discloses a tidal lane driving direction dynamic control method. The method comprises the steps that road basic data, real-time traffic flow rate and predicted number of queue vehicles are input; according to saturation in two directions, road traffic conditions are divided into five modes; according to a corresponding condition, a corresponding control model is called to solve an optimal control scheme; whether the optimal control scheme meets an optimization condition is determined; and if the optimal control scheme meets the optimization condition, the optimal scheme is output to road infrastructure and is carried out, otherwise the existing scheme is output. According to the invention, a model which dynamically changes the driving direction of a lane according to the real-time traffic flow rate and the predicted number of queue vehicles is provided for the first time; the method is suitable for a variable-lane road with more than 2 lanes; and the method has the advantages of high road resource utilization, good economic benefit, being universal and the like.

The invention belongs to the field of traffic management and control, and discloses a real-time variable lane control method and a control system. The real-time variable lane control method comprisesthe steps of establishing a variable guiding lane equal-vehicle average-delay model, solving a threshold condition for changing the function attribute according to the variable guiding lane equal-vehicle average-delay model, and drawing a threshold curve map; when a point which is obtained through combining an inlet lane straight driving and left-turn flow value is above the threshold curve, changing the lane function, and otherwise, keeping the original function attribute unchanged, and performing preliminary determining for whether the lane function changes. According to variable guiding lane technology, through dynamically adjusting lane function conversion, a defect of insufficient utilization rate of a left-turn lane or a right-turn lane caused by fixed turn lanes at a crossing can besettled. When the left-turn and straight driving traffic flow of the inlet lane reaches a certain threshold, the function attribute of the variable guiding lane should be changed, thereby realizing apurpose of optimized matching between the lane function and the turning unbalanced traffic flow.

The invention provides a reversible lane changing device for intelligent transportation based on electromagnetic conversion, and relates to the technical field of intelligent transportation. The reversible lane changing device for intelligent transportation based on electromagnetic conversion comprises a metal frame, a sliding block is slidably connected to the interior of the metal frame, bases are fixedly installed at the top end of the sliding block, a connecting chain is fixedly connected between the bases, and a handrail is fixedly connected to the tops of the bases through springs. According to the reversible lane changing device for intelligent transportation based on electromagnetic conversion, the labor intensity of workers is reduced; the lane changing efficiency is improved; thebases and the handrail can be stably positioned on one side of the reversible lane; traffic accidents caused by deviation of the handrail and the phenomenon of blocking normal passing of vehicles areavoided, it is guaranteed that the bases and the handrail can move after being stressed and can return to the initial positions, and the anti-collision capacity of the base and the handrail is improved while normal flow guiding is guaranteed.

The invention provides a road traffic variable lane control system and control method, which relate to the technical field of road traffic. The control system comprises a traffic parameter detection camera, a high-definition monitoring and capture camera, a core controller, a lawbreaking vehicle notice board, a variable lane controller and an LED variable lane indicator lamp. By automatically detecting the traffic parameters of each lane, processing the traffic parameters through the core controller and reasonably changing the direction of the variable lane, the traffic flow can be well controlled, and the traffic efficiency of the road can be increased. Moreover, as the control system is integrated with a lawbreaking behavior capture system, the traffic behaviors of vehicles can be standardized, and the normal and effective operation of the variable lane system can be better ensured.

The invention discloses a reversible lane optimization method considering traffic control and guidance collaboration. According to the method, a user selects a to-be-optimized road network and a to-be-optimized time period and inputs geometric characteristic data of a research road network and OD data in a research time period; the problem of reversible lane optimization considering traffic control and guidance collaboration is abstracted into a three-layer programming model, wherein an upper-layer model is a reversible lane optimization model based on non-linear 0-1 programming, a middle-layer model is a traffic control optimization model based on multi-target optimization, and a lower-layer model is a user equilibrium model considering intersection delay; and a heuristic iterative optimization algorithm is established to solve the three-layer programming model, wherein the upper-layer model is solved through a genetic algorithm, the middle-layer model is solved through a non-dominated sorting genetic algorithm, and the lower-layer model is solved through an iterative weighting method. Through the method, traffic control and guidance collaboration is introduced into reversible lane optimization.

The invention discloses a vehicle control method and system based on a reversible lane of a car yard. The vehicle control system comprises a direction triggering component, a license plate recognition triggering component, a license plate capturing component, a display and control component and a monitoring platform. The direction triggering component is used for generating a first continuous triggering signal when detecting entry of a vehicle; the license plate recognition triggering component is used for generating a second transient triggering signal when sensing passing of the vehicle; the monitoring platform is used for judging the direction of travel of the vehicle on the basis of the received first triggering signal and second triggering signal, controlling the license plate capturing component to capture a vehicle head image based on the second triggering signal, obtaining a license plate number from the vehicle head image through analysis, and sending corresponding vehicle information to the display and control component; the license plate capturing component is used for capturing the vehicle head image comprising the license plate number; and the display and control component is used for displaying the corresponding vehicle information. The vehicle control method and system are advantageous in that, travel direction of the vehicle can be recognized, vehicle management is facilitated, and vehicle passing efficiency is improved.

The invention discloses a navigation method capable of indicating and prompting variable lanes, which is characterized by comprising the following steps: planning a route; according to the current period, detecting whether a variable lane is existed at front or not, displaying the information of the variable lane at front; prompting the attention for driving to the correct lane to the user by voice broadcast; and prompting the current lane direction at front by the voice broadcast. By the above navigation method, a driver can smoothly pass through the variable lane, so that unnecessary trouble can be avoided.

The invention discloses a tidal road driving traffic indication system, which comprises an A-direction fixed lane, an A-direction reversible lane, a B-direction lane direction changing indication light, a B-direction lane no-entry indication light, a B-direction lane traffic violation warning light, B-direction lane traffic lights, a B-direction lane video monitoring module, a B-direction fixed lane, a B-direction reversible lane, an A-direction lane direction changing indication light, an A-direction lane no-entry indication light, an A-direction lane traffic violation warning light, A-direction traffic lights, a controller and an A-direction lane video monitoring module. The lane video monitoring modules record traffic flows and road traffic conditions in real time; when a peak traffic flow appears up or down the lane, the controller controls the passing directions of the reversible lanes, states of the lane direction changing indication lights and the lane no-entry indication lights are adjusted, and the lane passing directions are displayed. Road resources are reconfigured according to different needs of the traffic flows in and out of the city, the use efficiency is improved, and traffic pressure is eased.

The invention provides a reversible lane control method. The reversible lane control method comprises the steps that the traffic flow on a reversible lane is determined according to a meter-level positioning result output by a vehicle-mounted monitoring terminal installed on a vehicle, wherein the vehicle-mounted monitoring terminal comprises a Beidou/GPS bimodule satellite meter-level positioning module; a control strategy of the reversible lane is determined according to the traffic flow; and control over the reversible lane is accomplished according to the control strategy. After the technical scheme is adopted, a system can automatically carry out statistics on the traffic flow of urban roads, statistics is conducted according to the meter-level positioning result based on a ground enhancement technology, and accuracy of statistics is extremely high.