86results about How to "Ensure traffic efficiency" patented technology

The invention discloses a traffic-priority-based lane change danger collision avoiding method which comprises the following steps of: acquiring running information and traffic priorities of a vehicle and surrounding vehicles; if the running vehicle is set as a vehicle M, and a vehicle running in a target lane is set as vehicle D, when the vehicle M is ready to change lane, computing the safe lane change time of the vehicle M, wherein the computed permitted maximum safe lane change time t2 is taken as a safe lane change time threshold; carrying out safe lane change time evaluation, and intervening the braking of the vehicle M or the vehicle D according to the priorities when the time is not safe enough; and computing the safe lane change time of the vehicle M again until the lane change of the vehicle M is completed. According to the invention, possible collision can be efficiently and correctly judged in real time through comprehensively analyzing and predicting state information of a plurality of vehicles; through giving direct visual prompt to drivers and performing braking intervention on the vehicles, the life safety and property safety of the drivers in the lane change process are ensured; and for the vehicles with higher traffic priorities, the prior passing of the vehicles in the running process can be ensured, and thus the traffic efficiency is ensured.

The invention relates to a crossing pre-induction signal priority control method used for a rapid bus. The method is applied to a bus rapid transit (BRT) system, multiple detectors are arranged at a crossing setting position, arrival time of a bus is predetermined in advance, length of a corresponding signal phase of a crossing is adjusted in proportion, and a signal lamp of the crossing is controlled. According to the invention, multiple detectors are arranged before the crossing under the premise of a bus rapid transit mode, the arrival time of the bus is predetermined in advance, the length of the corresponding signal phase is adjusted in proportion according to the actual passing priority requirement, public vehicles and pedestrian are guaranteed to pass safely, the bus can preferentially pass by fully utilizing a green light signal of the crossing, and operating efficiency of the bus is improved.

The invention discloses an ETC lane system compatible with weight-calculating charge and a realizing method thereof. The system comprises a non-weight-calculating charge subsystem and a weight-calculating charge subsystem, wherein the non-weight-calculating charge subsystem is used for communicating with an on-vehicle electronic label, identifying vehicle types, judging whether relative vehicle information is valid or not and permitting weight-calculating charge vehicles with valid relative vehicle information to pass or automatically reading, writing, charging and permitting non-weight-calculating charge vehicles with the valid relative vehicle information to pass; the weight-calculating charge subsystem is used for communicating with the on-vehicle electronic label, identifying the vehicle types, weighting the weight-calculating charge vehicles and automatically reading, writing, charging and permitting the weight-calculating charge vehicles to pass or permitting the non-weight-calculating charge vehicles to pass. The invention can respectively carry out the automatic charge transactions of the weight-calculating charge vehicles and the non-weight-calculating charge vehicles on the same ETC lane, controls the passage operation and improves the rapid passage capability of the ETC lane.

The invention discloses an arterial highway and local highway access traffic dispersion system. Sensors are arranged between the outermost lane of an arterial highway and the two sides of an arterial highway access. An arterial highway guide rod device is obliquely buried under the ground of the arterial highway access. A bicycle way a certain distance away from the arterial highway access is provided with a sensor used for detecting pedestrians or vehicles and a bicycle way guide rod device. The bicycle way guide rod device is arranged in front of the sensor. A sensor and a local highway guide rod device are disposed on a right turning lane of the local highway a certain distance away from the arterial highway access. The local highway guide rod device is disposed in front of the sensor. Each guide rod device comprises a guide rod, a lifting column, a box and a drive control device, wherein the guide rod is installed on the lifting column, and the lifting column is driven by the drive control device to move up and down. Normal traffic order of the access can be guaranteed, the occurrence rate of traffic accidents is reduced, and traffic efficiency of main highways is guaranteed.

The invention discloses a cooperative control method of a left-opened-door bus special phase setting and social traffic flow, which comprises the following steps: setting a bus station and a stereo facility which help pedestrians to cross a street; detecting a bus; determining the running time of the bus; determining a signal phase of the bus which drives through an intersection; and setting the bus special phase and a cooperative control plan. According to the invention, the bus stations in two directions are combined and placed at a median strip of the intersection, so that not only the land is saved, but also the bus station points are easier to recognize, and meanwhile, a new concept for planning and constructing of a public transit network is provided, that is, the public transit network is connected based on the bus stations arranged at intersections. With the adoption of the method, the situation that the bus does not stop at an intersection without a bus station while stops at an intersection with a bus station can be basically realized, so that passengers waiting for a long time at an intersection with a bus station can be avoided, thereby shortening the whole driving time of the bus and improving the whole operation efficiency of the bus system. Moreover, the method is functioned as the cooperation of the social traffic flow, so that the passing efficiency of the whole intersections is guaranteed.

The invention discloses an automatic driving intersection vehicle entering moment and driving track control method and belongs to the field of intelligent transportation. In an automatic driving environment, the basic information of an intersection and vehicles is collected, a rectangular coordinate system is established, and a path equation and conflict point coordinates of the vehicles in the intersection are determined; a vehicle speed control area is set for each vehicle, and the vehicle speed is adjusted in the speed control area; for different types of vehicles, the real-time distance function and speed function of each vehicle are finally obtained by adjusting the speed to optimize the driving track of the vehicle according to the time of the conflict point or the restriction of thetime and speed of the preceding vehicle entering the intersection, and safe and efficient shuttle driving of the vehicle at the automatic driving intersection without signal control is realized. Compared with the prior art, the method for controlling the entering moment and the driving track is provided for the automatic driving vehicle at the intersection, and the optimal driving track is calculated for the automatic driving vehicle passing through the intersection.

The invention discloses a traffic light control method, a traffic light control device and a traffic light control system. The traffic light control method, the traffic light control device and the traffic light control system have advantages of improving road traffic safety and ensuring high traffic efficiency. The traffic light control method comprises the steps of determining an objective group in passengers who enter a crossing when the traffic light at the cross is green, wherein the objective group satisfies a condition that the walking speed of each passenger in the group is lower than a preset speed threshold and/or the body height of the passenger is lower than a preset body height threshold; determining prolongation time of the green light according to the walking speed of the objective group and the traffic flow information of the crossing; and controlling state of the traffic light according to the prolongation time of the green light.

The invention discloses an automobile transverse and longitudinal collision avoidance active coordinating system and a coordination method thereof. The automobile transverse and longitudinal collision avoidance active coordinating system comprises a forward looking radar, a speed sensor, a lateral acceleration sensor, a front wheel turning angle sensor, a judging module, a signal integration module, a weighing unit, a steering unit, a braking unit, a shifting unit and an ECU. When working, the ECU calculates the safety distance under the current working condition and compares the safety distance with the relative distance, input by the forward looking radar, of two automobiles; when the difference of the safety distance and the relative distance is smaller than a set threshold value, the weighing unit endows different weights to the speeds, the longitudinal accelerations, the lateral accelerations and the front wheel turning angles of the automobiles, and the effect that braking and steering are coordinated to avoid collision is achieved. The multifunctional collision avoidance modes can be provided for the automobiles, and the effect that steering and braking are conducted simultaneously can further be achieved, so that the effectiveness of automobile collision avoidance is improved, and drivers can be assisted in manipulating the automobiles under any working conditions.

The invention discloses an internet-of-vehicles-based intersection signal light split regulation method. The method comprises the following steps: performing vehicle GPS (Global Positioning System) road correction and calculating a road average speed; establishing an average speed estimation model; establishing a single-intersection signal light six-phase control system model; solving duration of each phase by using a particle swarm algorithm; performing dynamic updating of each phase time of an intersection. Field experiment application proves that the internet-of-vehicles-based intersection signal light split regulation method has a good effect, can effectively improve the vehicle traffic efficiency of the intersection and is applicable to occasions such as intersection signal light split regulation.

The invention provides a system for preventing motor vehicle green-light following intersection blocking. The speed of a motor vehicle over a stop line is detected, the passing time required when the motor vehicle passes through an intersection at the speed is calculated and compared with the remaining time of the green light in the releasing direction, and if the required passing time is longer than the remaining time of the green light, the green light in the direction is controlled to be switched into the red light. By means of the mode, the vehicle can be prevented from entering the intersection in a light switching mode when the intersection is blocked, as red light running belongs to illegal acts, green-light following generated when blocking occurs can be effectively avoided, and the passing efficiency of the intersection is guaranteed. According to the scheme, the signal light is controlled to be switched into the red light instead of a reminding board, as law enforcement can not be carried out when driving does not conform to the reminding board, the reminding board only has the reminding effect, law enforcement can be facilitated in the light switching mode, and the good passing order can be easily established.

The invention provides a system for preventing intersection congestion caused by red light violation and green light follow-up of motor vehicles. The speed of each motor vehicle is detected in real time when the motor vehicles get over a stop line; the needed passing time for each motor vehicle to pass through an intersection is worked out, the needed time T for the nearest motor vehicle to get over the stop line is compared with green light remaining time t of the release direction, and if the needed passing time T is longer than the green light remaining time t, the green light is controlled to become the red light in the release direction. In the mode, when the intersection is congested, the vehicles are prevented from continuing to get into the intersection in a light changing mode; when the red light is switched on, if the motor vehicles continue to get over the stop line and get into the intersection, red light violation behaviors of the motor vehicles can be recorded by the system, intersection congestion aggravation is prevented, and equipment investment is also saved. The red light violation behaviors are also recorded, traffic law enforcing power is enhanced, illegal behaviors are cracked down, a good passing order is built easily, and traffic safety performance is improved.

The invention relates to an early-on early-off traffic control method and system applicable to average periods or bottom periods. Going-straight green lights are turned on firstly for first preset time t1, the going-straight green lights and turning green lights are turned on simultaneously for second preset time t2, and the going-straight green lights are turned off while the turning green lights are turned on for third preset time t3. Going-straight vehicles are guaranteed to pass firstly in the first preset time t1, and the condition that going-straight is held by turning when the green lights for turning and going-straight are on simultaneously is prevented; in the second preset time t2, going-straight and turning vehicles proceed simultaneously and pass alternately at safe intervals, so that the vehicles driving in during the average periods or the bottom periods can pass intersections as quickly as possible; in the third preset time t3, way clearing protection time for turning vehicles stopping in regions for turning to pull away crossings safely is left, so that passing of following vehicles in other directions is facilitated. According to the method and the system, a gap acceptance theory is fully used, so that the intersection passing efficiency of the vehicles in all directions is improved, and the traveling efficiency and the traveling safety in the average periods or bottom periods are guaranteed.

The invention relates to an urban road supervision method and system based on unmanned aerial vehicle navigation following, and a readable storage medium, and the method comprises the steps: collecting traffic image information through an aerial photography unmanned aerial vehicle, extracting traffic flow data vector features, and recognizing the types of traffic events through a network model; generating induction information according to the traffic event category, performing real-time guidance on the vehicle path through the induction information to obtain result information, determining anunmanned aerial vehicle navigation task, performing formation on the unmanned aerial vehicles, and determining an unmanned aerial vehicle reference track according to the unmanned aerial vehicle navigation task; acquiring a current flight path of the unmanned aerial vehicle in real time, and comparing the current flight path of the unmanned aerial vehicle with the reference flight path to obtaina deviation ratio; judging whether the deviation ratio is greater than a preset threshold value or not; if yes, generating correction information, reforming the multiple unmanned aerial vehicle nodesaccording to the correction information, generating a new planned flight path, updating the current flight path according to the new planned flight path, and controlling the unmanned aerial vehicle formation to fly along the new planned flight path.

The invention relates to a simulation vehicle control method and device, computer equipment and a storage medium, and the method comprises the steps: displaying a simulation traffic scene which comprises an uncontrolled simulation traffic intersection; when the simulation vehicle drives into the reaction area of the simulation traffic intersection, generating a passage token corresponding to the simulation vehicle; storing the passage tokens corresponding to the simulation vehicles into a queue, wherein the priority of the simulation vehicles corresponding to the pass tokens which are firstlystored in the queue for passing through the simulation traffic intersection is higher than the priority of the simulation vehicles corresponding to the pass tokens which are later stored in the queuefor passing through the simulation traffic intersection; and controlling the simulation vehicles to sequentially pass through the simulation traffic intersection according to the priority sequence ofthe passage tokens corresponding to the simulation vehicles in the queue. According to the scheme provided by the invention, the simulation vehicles can be controlled to sequentially pass through theuncontrolled simulation traffic intersection, and the traffic safety and the traffic efficiency are ensured.

The invention provides a vehicle driving assistance system and method and a corresponding computer readable storage medium. The vehicle driving assistance system comprises an information acquisition unit which is configured to acquire passenger getting-on and getting-off information of a temporarily parked vehicle within a preset distance range around a current vehicle; an estimation unit which isconfigured to estimate the departure time of the temporarily parked vehicle at least based on the acquired passenger getting-on and getting-off information; a decision unit which is configured to predict a driving track of the temporarily parked vehicle at least based on a navigation path of the temporarily parked vehicle and the departure time, predict a driving track of the current vehicle at least based on the navigation path of the current vehicle, and based on the predicted traveling track of the temporarily parked vehicle and the traveling track of the current vehicle, judge whether thetraveling track of the temporarily parked vehicle and the traveling track of the current vehicle are crossed within set time or not, so as to provide auxiliary driving for the current vehicle.

The invention discloses an early warning processing system and method for the instruction non-compliance rate of an automatic driving automobile based on vehicle-road cooperation. The early warning processing system comprises an Auto-DT automatic drive test system, a vehicle-road cooperation center and an automatic vehicle-mounted system. The Auto-DT automatic drive test system is used for collecting vehicle and road data information and performing denoising processing on the vehicle and road data information to obtain an effective invoking automatic vehicle data information base; the vehicle-road cooperation center is used for sending a driving instruction to an automatic automobile, calculating an automatic automobile instruction non-compliance rate and a traffic flow influence factor, and determining an automatic automobile violation grade and providing a specific processing scheme (deducting a corresponding integral and sending a corresponding level early warning prompt); and the automatic vehicle-mounted system is used for receiving the instruction and prompt information sent by the vehicle-road cooperation center and executing vehicle driving operation. According to the invention, the traffic intelligence and safety of the automatic driving special lane can be realized.

The invention belongs to the technical field of road traffic, and provides a sunken type special riding road downwards penetrating a road intersection. The riding road is arranged on each of the two sides of a roadway, the road surface elevation of the riding road is lower than the elevation of an adjacent road surface, moreover, the road surface structure of the riding road adopts a water-permeable material, the riding road penetrates through the intersection in the form of downwards penetrating a channel at the road intersection, and the riding road is provided with outlet and inlet ports inthe front and back of the road intersection. According to the sunken type special riding road downwards penetrating the road intersection, rider traffic is taken as an independent traffic flow to beincorporated into urban road traffic organization design so that the traffic working efficiency and riding safety of riders can be improved, and the interference of the rider traffic on the whole roadtraffic also can be reduced.

The invention relates to a road traffic guidance auxiliary system, in particular to an attached type automatic charging traffic signal emergency machine system. The device is characterized by comprising a case, a power supply device, a communication device, a control module and an emergency traffic signal device. The power supply device is electrically connected with the communication device, the control module and the emergency traffic signal device, and the control module is in electric signal connection with the power supply device, the communication device and the emergency traffic signal device. The communication device, the control module and the emergency traffic signal device are all located in the case. The power supply device comprises a storage battery and a wireless charging module. By adopting the system, emergency signal command can be realized when electric power is interrupted and intersection signal machine facilities are damaged, necessary traffic signal indication and basic vehicle-road coordination are provided for unmanned vehicles, the problem that the passing efficiency of the intersection is reduced is avoided, the intersection is ensured not to be jammed, and the reliability of unmanned driving is improved.

The invention provides a special phase setting method for controlling pedestrians at intersections by a two-phase signal. The method determines whether the special pedestrian phase is set at the intersection based on total delay of traffic participants. According to the special phase setting method disclosed by the invention, the pedestrians and motor vehicles can pass through the intersections under the condition that the per capita possession of road space-time resources is relatively fair while the passing efficiency is ensured, so that the efficiency and the fairness of the pedestrians andvehicles passing through the intersections are ensured.

The invention discloses a signal lamp self-adaptive control system and method for large park traffic safety and overcomes the defect that the fixed timing control method of large- and medium-sized park traffic signal lamps cannot flexibly adapt to park pedestrian flow change. The method includes the steps of firstly, using camera devices distributed on various road sections of a park to perform video collection, and processing images according to a set human body recognition algorithm to obtain pedestrian flow information so as to achieve pedestrian flow detecting; secondly, by a control module, judging road section busy states according to corresponding pedestrian flows, and providing corresponding signal lamp control signals; thirdly, by the signal lamps, responding to the received control signals from the control module, and controlling passing rights. The method has the advantages that the pedestrian flows of the various road sections in the park are judged, the passing rights of the road sections are controlled in real time by controlling the switching of the signal lamps at the intersections of the park, pedestrian passing requirements are satisfied effectively, and road safety is guaranteed effectively.

The invention discloses a variable non-motor vehicle lane system on a road intersection, and an application method thereof. On the basis of an existing intersection facility, the variable non-motor vehicle lane system disclosed by the invention adds a retractable door, lifting columns, an electronic lane indication board, a traffic flow monitoring device and a controller, and is suitable for a signal road intersection with a non-motor vehicle obvious rush hour. When a non-motor vehicle traffic volume is large, at a rush hour, the lifting columns are lifted to temporarily change a right-turn motor vehicle lane into a non-motor vehicle lane, and the retractable door is opened to guide non-motor vehicles to be driven into the right-turn motor vehicle lane so as to alleviate traffic pressure on the intersection during the non-motor vehicle traffic rush hour. The system slightly transforms the current situation of the intersection and is relatively low in transformation cost. Most importantly, the dynamic deployment of an intersection traffic space is realized according to the traffic flow of motor vehicles and non-motor vehicles, and intersection traffic efficiency is guaranteed as faras possible.

The invention provides a signal timing and vehicle speed dynamic coordination control optimization method based on vehicle infrastructure cooperation, which comprises the following steps: firstly, based on an original green wave coordination scheme of a coordination trunk road, calculating a green light time increment according to a traffic flow information parameter and a driving-in flow of a target vehicle team on an initial detection road section, thereby being beneficial to improving the traffic capacity of a coordination intersection, and reducing the queuing length of the intersection when the driving-in flow of the target motorcade is increased; the green light adjustment time of the coordination intersection is calculated according to the actual driving speed of the target motorcade in combination with the optimal design vehicle speed of the original green wave coordination scheme of the coordination trunk road, so that the maximum green wave bandwidth can be obtained, and the number of parking times of straight vehicles can be reduced to the greatest extent, time is adjusted according to the green light, the optimal design vehicle speed of the next road section to which the target vehicle team is about to drive is calculated, and the vehicle driving behavior is adjusted under the dynamic optimization of the signal timing so as to ensure the traffic efficiency of the road.

The invention relates to an urban road supervision method and system based on dynamic traffic flow, and a readable storage medium. The method comprises the steps: collecting traffic image informationthrough an aerial photography unmanned aerial vehicle, and preprocessing the image information to obtain traffic flow data; extracting traffic flow data vector features, and identifying traffic eventcategories by using a network model; and generating guidance information according to the traffic event category, performing real-time guidance on a vehicle path through the guidance information, andtransmitting result information to a platform.