2244results about How to "Improve traffic efficiency" patented technology

Embodiments in accordance with the invention provide communication between vehicles and traffic control devices and/or other vehicles. The communication system provides for communication of system variables such as: signal setting (e.g., red/yellow/green light), signal direction, time to signal change, signal sequence (e.g., next traffic flow), red light runner alert, signal failure, driver urgency, vehicle presence, absolute vehicle location, toll collection information, vehicle speed, roadway condition (e.g., ice on bridge surface), traffic impairments (e.g., delay ahead). The communication system also provides for communication of system variables such as: speed, acceleration/deceleration, braking, lane change with direction, malfunction (e.g., stall). The system communicates utilizing wireless optical, acoustic and/or radio frequency signaling methods.

Disclosed are an autonomous vehicle driving system and method that increase probability that a signal of a traffic light will be recognized by using map information built in an autonomous vehicle driving system and a traffic light infrastructure, determine which travel route is allowed according to a camera recognition result and signal information delivered through V2X communication (traveling is allowed from which entrance lane to which exit lane), and enable an autonomous driving vehicle and a traffic light infrastructure to exchange intersection passage route information in order to allow the autonomous driving vehicle to efficiently pass through an intersection.

The present invention discloses a city expressway access ramp vehicle pass guiding system in car networking environment and a guiding method thereof. The system comprises a roadside device, a monitoring center, the vehicle device of a main line vehicle and the vehicle device of a ramp vehicle; the roadside device includes main line traffic stream information collection module, a ramp traffic stream information collection module and a roadside intelligent decision module; the vehicle device of the main line vehicle and the vehicle device of the ramp vehicle respectively include vehicle master control modules, vehicle basic information storage module, GPS location modules, vehicle speed collection modules, vehicle speed control modules and prompting modules; the conflict prediction estimation is performed through the operation station information of the near-side lane vehicle of the roadside device collection main line and the ramp vehicle to give out the grouping condition of the access ramp vehicle and the safety vehicle speed required by importing the main line traffic flow and send the grouping condition and the safety vehicle speed to the prompting module and the vehicle speed control module in the vehicle device. The city expressway access ramp vehicle pass guiding system in car networking environment and the guiding method thereof can avoid the vehicle collision of an express way confluence zone and improve the driving safety and the pass efficiency.

The invention provides a vehicle and road collaborative information-based signalized intersection vehicle speed guidance system, which comprises an information communication module, an information acquisition and processing module, a vehicle speed guidance and suggestion module and a vehicle safety early-warning module. The information acquisition and processing module is used for acquiring the information of a vehicle through the acquisition and processing process of the combination of a GPS and an INS. The information acquisition and processing module is also used for acquiring the information of a preceding vehicle and the signal state information of an annunciator via the information communication module. By means of the vehicle speed guidance and suggestion module, after the entrance of the above vehicle into a guidance range, whether the vehicle is within the range of lane-changing-allowable road segments or not is judged based on the vehicle information within the guidance range and the signal state information of the annunciator. Meanwhile, the vehicle speed guidance and suggestion module provides a vehicle speed guidance suggestion and a driving lane suggestion to the vehicle. The vehicle safety early-warning module calculates a safety margin value between two vehicles according to the information of the vehicle and the information of the preceding vehicle, and then judges the collision risk state of the vehicle according to the safety margin value. According to the invention, the real-time position of the vehicle, the real-time speed of the vehicle and the mutual influence among vehicles are fully contemplated. In this way, when the vehicle passes through a signalized intersection, the stop delay of the vehicle is reduced. Therefore, the traffic efficiency of roads is improved and the environmental pollution is reduced.

The invention requests to protect a multifunctional V2X intelligent roadside base station system. The system comprises roadside sensing equipment, an MEC server, a high-precision positioning service module, a multi-source intelligent roadside sensing information fusion module and a 5G/LTE-V communication module. An intelligent roadside device integrating C-V2X communication, environmental perception and target recognition, high-precision positioning and the like is designed, and the problem that multi-device information fusion and integration are inconvenient in intelligent transportation is solved. In the system, a C-V2X intelligent road side system architecture and a target layer multi-source information fusion method are designed. Road side multi-source environment cooperative sensing is combined, real-time traffic scheduling of the intersection is realized by using a traffic scheduling module in the MEC server, and communication and high-precision positioning services are providedfor vehicle driving, and finally the target information after fusion processing is broadcasted to other vehicles or pedestrians through a C-V2X RSU (LTE-V2X/5G V2X and the like) according to an application layer standard data format, so the driving and traffic safety is improved.

The invention discloses a parking guidance system and a method thereof based on release and forecast of a parking index, and belongs to the technical field of parking management and vehicle detection of the internet of things. The parking guidance system comprises an information acquisition subsystem, a data transmission subsystem, a central control subsystem and an information release subsystem,wherein the central control subsystem comprises an information release server, an index operation unit, a database server and a management terminal; in addition, the information release subsystem comprises terminals such as an internet, a vehicle-mounted GPS (Global Positioning System), a traffic transceiver, a three-color guiding panel, a mobile phone. The method of the parking guidance system acquires the flow information of an outlet and an inlet of a parking lot, uploads the data, and computes the parking index. Finally, the computed result of the parking index is transmitted to the terminals of the information release subsystem. The parking guidance system and the method thereof can release the parking index and forecast the travel information visually and roundly, and can effectively integrate the conventional parking guiding information and other dynamic information such as real time traffic status.

The invention proposes a signal control intersection vehicle speed guiding system and guiding method in a vehicle road coordination environment on the basis of the characteristics of the vehicle roadcoordination environment. The system includes a vehicle-mounted device, a roadside device, and a vehicle speed guiding module. The vehicle-mounted device includes a vehicle-mounted information moduleand a vehicle-mounted early-warning module. The vehicle-mounted information module transmits the state information of the vehicle to the roadside device or other vehicle-mounted devices. The vehicle-mounted early-warning module calculates a safety threshold between the vehicles according to the real-time state information of the vehicle and the preceding vehicle, and performs dangerous pre-judgment warning on the vehicle according to the threshold. The roadside device comprises a roadside information acquisition module, a basic information storage module and a wireless communication module, and has the functions of storing, transmitting and calculating. The vehicle speed guiding module provides the lane guiding information and the vehicle speed guiding information of the vehicle when the vehicle enters an intersection section. Compared with the prior art, the signal control intersection vehicle speed guiding system and guiding method take the safety distance of the vehicle into consideration, minimize the delay of the intersection, improve the traffic efficiency and reduce environmental pollution.

The invention discloses a no-signal intersection vehicle intelligent cooperative passage method based on a CPS (Cyber-Physical System), aiming to overcome the shortcomings of green light zero passage and low passage efficiency caused by fixed traffic light time control, and lack of information interaction among vehicles in the intersection passage management of prior art. Based on the deep fusion of the 3C (computing, communication and control) technology in a CPS, and supported by the GPS technology, vehicle-vehicle communication technology and speed intelligent control technology, the method is provided and comprises three steps of vehicle passage data acquisition, information processing and communication, and decision control; vehicles close to an intersection continuously obtain the passage information of local vehicles, and perform communication interaction with vehicles in other directions so as to percept surrounding environments in real time, and on the basis, the method performs dynamic decision making and control, i.e., the method analyzes whether the local vehicles and other vehicles exist potential bump risks according to the passage information of surrounding vehicles, cuts the risks, considers vehicle passage priorities, controls speeds and ensures vehicle safe and efficient passage.

The invention discloses a control method of a traffic signal lamp. The traffic signal lamp is used for providing the control of passing instruction time aiming at all passing directions of junctions. The method comprises the following steps of: collecting video images of junctions, wherein the video images at least comprise video images in the target passing direction; identifying area characteristic information in the target passing direction from the video images; and calculating passing instruction time of the traffic signal lamp corresponding to the target passing direction according to the area characteristic information. The invention can dynamically adapt to the change of traffic flow of all periods of time in all directions of each junction in real time, thus improving passing efficiency of roads.

The invention proposes a traffic signal control method and device, relating to the technical field of control. The method comprises a step of obtaining a traffic flow prediction model established according to a historical traffic flow, wherein the historical traffic flow is the historical traffic flow in each direction of a first intersection in each first period in a past first time interval, a step of obtaining the predicted traffic flow in each direction of the first intersection in each first period in a future second time interval according to the traffic flow prediction model, and a step of determining the time of the traffic signal lamp in each direction of the first intersection in each first period in the second time interval according to the predicted traffic flow. According to the method, the traffic flow of a future time period can be predicted based on the historical traffic flow, the time of the traffic signal lamp is set based on the predicted traffic flow, thus the time setting of the traffic signal lamp is more in accordance with the rule of the future traffic flow, and the cost of manual adjustment can be saved.

The invention relates to an urban intersection traffic signal control method, relates to a multi-phase-jump and vehicle full-dynamic induction traffic control method, and aims to flexibly control traffic signals at intersections by using a traffic signal instrument so as to improve the traffic pass property of vehicles at the intersections and reduce the total delay time of vehicles. The method comprises the following steps: 1) setting an upstream vehicle detector and a parking line vehicle detector at each lane of a traffic intersection, and detecting dissipating vehicle and information of vehicles entering the intersection in real time; 2) according to the numbers of vehicles waiting in different lanes and vehicles running into the intersections, automatically transmitting passing signals to busy lanes by using a busy lane priority pass method through a traffic signal instrument control system so as to induce the vehicles in the lanes to pass prior; 3) by using a method that compatible lanes adopt one same phase and non-compatible lanes are subjected to phase-jump induction control, providing the priority pass right for lanes with a plenty of waiting vehicles or a lane into which a plenty of vehicles run. Due to the adoption of the method, a relatively good induction effect can be achieved at intersections with unsaturated traffic vehicles.

The invention provides a vehicle speed inducing method for green driving at a signalized intersection in a car networking environment and a simulation system. When a vehicle travels to a preset vehicle speed inducing region, a central control system can acquire motion state information (position, speed, acceleration and the like) of the vehicle, and real-time dynamic green driving vehicle speed inducing is carried out on the vehicle by taking pass of the intersection without parking as a target. The vehicle speed inducing method alleviates blockage of the intersection of an urban road on traffic flow and reduces vehicle delay, fuel oil consumption and pollutant discharge at the signalized intersection. On the basis, a vehicle speed inducing simulation system in the car networking environment is built by applying an open-source multi-agent simulation tool Netlogo, and travel time, fuel consumption and pollutant discharge of the vehicle when passing the intersection in two environments, namely the traditional driving and car networking, are simulated, compared and analyzed, so as to verify feasibility and effectiveness of the vehicle speed inducing method.

The invention relates to a zebra crossing pedestrian monitoring and warning device based on laser inspection. The current devices have bad using effects. The device of the invention comprises a pedestrian monitoring device, a control box and signal lamps, wherein the pedestrian monitoring device comprises two trigger gates respectively arranged at the start and end of a zebra crossing; each trigger gate comprises a laser emission column and a laser pick-off column arranged on a sidewalk respectively at two ends of the zebra crossing; the laser emission column of each trigger gate emits laser beam and the laser pick-off column of each trigger gate picks off the laser beam; when a pedestrian passes through the trigger gates, the laser beam is cut off; two rows of signal lamps are respectively arranged at two sides of the zebra crossing; and the control box is arranged on a telegraph pole of the sidewalk. The device of the invention adopts the pedestrian monitoring systems arranged at two ends of the zebra crossing, and each pedestrian monitoring system is additionally provided with a passing in and out direction judging function, thereby improving the efficiency of system operation. The device of the invention is more conductive to remind drivers to avoid collision to reduce hidden danger of traffic accidents.

The invention relates to a control method and a system for intersection signal timing guaranteeing the priority of buses. The system adopts an ultrahigh frequency RFID (Radio Frequency Identification) technique to achieve the remote recognition, acquisition and control of information of an onboard unit; and adjusting an intersection signal timing scheme through an optimization algorithm by collecting the information of buses in all direction of an intersection, so as to provide control of passing priority for buses. The control method solves the bus priority mode on common urban roads, and realizes the bus passing priority on the basis of maximizing the overall operation efficiency of vehicles at the intersection, so as to improve the operation efficiency of buses. In addition, the control method is low in cost and convenient to implement and becomes effective fast, and achieves the win-win of the bus priority and the overall operation efficiency of the intersection, so as to reduce delays of buses at urban intersections and ensure the punctuality of buses.

The invention discloses an intersection multiline public traffic vehicle priority request conflict coordination control method. By aiming at an intersection with the multiline public traffic vehicle priority request conflict and comprehensively considering factors such as travel time delay of vehicles, priority strategies and the road grade, a real-time multiline priority request conflict coordination control strategy is established. Only when travel time delay of one public traffic vehicle exceeds a certain threshold value, a priority request meets the limiting condition and the benefit brought by priority is higher than delay caused by the priority, the public traffic vehicle sends a priority request signal; when a multiline priority request is generated, a priority level evaluation model is utilized to sort conflicted priority requests, and the priority of passing is given to a line with the highest priority level. On one hand, the problem of unfairness of an original multiline priority request conflict solution is solved; on the other hand, parameters which the method relates to are fewer and are very easy to obtain, a complex algorithm, an optimizing process and the like are not required, practicality is high, and operating efficiency of an urban public traffic system can be greatly improved.

The invention discloses a novel control system and a novel control method for sensing and controlling road intersection group signals. Through constructing a method containing four steps of 360-DEG intersection panorama video real time monitoring and modeling, intersection assessment index and online simulation analysis, supersaturated intersection key path and control strategy optimization and intersection signal control optimization and panorama video acquisition robot linkage command and establishing an intelligent city traffic control robot based on an intersection group, a city road supersaturated intersection single-point operation optimization problem is solved, an intelligent command city road intersection, supersaturated intersection and supersaturated intersection group traffic control and optimization scheme is formed, moreover, the intelligent city traffic control robot based on the intersection group is employed, linkage between a panorama video acquisition robot and a traffic signals controller is realized, traffic efficiency and the service level of intersection single-point control are improved, so operation efficiency of a city traffic system is greatly improved, and city traffic jams are alleviated.

The invention discloses an Internet of vehicles information system oriented to V2X network connection vehicles. The system comprises a vehicle terminal T-BOX, a mobile APP client side and a server background system; one mobile phone APP is bound with one vehicle terminal T-BOX; the vehicle terminal T-BOX is mounted on the vehicle through an OBD interface, the vehicle terminal T-BOX on each vehiclecan perform ad-hoc networking with the other vehicles in a communication range and perform communication through a V2X(802.11p) dedicated short-distance wireless communication mode; and the vehicle terminal T-BOX communicates with the server background system through a 4G/5G wireless mode. The Internet of vehicles information system provided by the invention is formed by combination with demandsof the present vehicle networking and vehicle security pre-warning and the disadvantages of the current single-vehicle communication.

The invention is directed to intersection traffic control under an automatic driving and manual driving vehicle mixed traveling condition, and designs an advanced control method to improve the trafficefficiency of the mixed traveling condition under the premise of ensuring safety. First, entrance lanes of intersections are divided into automatic driving lanes, manual driving lanes and mixed traveling lanes. Secondly, for vehicles arrived, according to the types of the vehicles, lanes are selected, right-turning vehicles enter the mixed traveling lanes, and straight-forward and left-turning vehicles respectively enter respective dedicated lanes. A new signal timing scheme is designed, the manual driving vehicles are still in accordance with the signal timing scheme in the intersections totravel, while the automatic driving vehicles pass through at the full red time of a signal period, and self-organized traffic based on position reservation is adopted to avoid conflicts.

The invention discloses a control system and method of a dedicated lane for an autonomous vehicle. The system comprises a vehicle-mounted system, a roadside system, a cloud lane management center, anda road information prompting system. The vehicle-mounted system includes a vehicle-mounted information processing center, an information acquisition device, a vehicle-mounted communication module, and a human-computer interaction terminal arranged on a manually driving vehicle, and an automatic driving terminal arranged on the autonomous vehicle. The roadside system includes a roadside information processing center, a video monitoring module, a roadside unit and a second 5G communication module. The road information prompt system includes an information issuing center, a variable informationprompt board, a broadcast and a third 5G communication module. The cloud lane management center includes a data processing center, a traffic information database and a fourth 5G communication module.Different traffic congestion impact factors are assigned for a manually driving vehicle and an autonomous vehicle; and whether to start an autonomous vehicle dedicated lane is decided based on a traffic congestion index and an autonomous vehicle penetration index, so that the traffic efficiency is improved.