A system and method for self-optimizing traffic flow using shared vehicle information that utilizes multiple controllers in dynamic communication to optimize the flow of traffic. The system and method utilizes one or more traffic synchronization controllers (TSCs) (receivers) that receive information from one or more vehicle based transmitters called vehicle information agents (VIAs) and/or a network of traffic control devices (TCDs) associated with the traffic synchronization controllers to determine a variety of information related to traffic within a geographic region, including volume, speed, destination, intended route of the vehicle, as well as other vehicle related information, in order to determine the optimal flow of traffic within the region. The system and method then transmits traffic control signals to the various traffic control devices within the region or adjacent regions in order to optimally control the flow of traffic. The system and method may also share information amongst traffic synchronization controllers within the network in order to optimize the flow of traffic over a larger region.

System and Method for Self-Optimizing Traffic Flow Using Shared Vehicle Information

PROBLEM TO BE SOLVED: To provide a traffic signal controller, a computer program, and a traffic signal control method which enable appropriate traffic signal control parameters to be selected depending on traffic situations. SOLUTION: When the traffic signal controller 1 receives traveling time information of traffic control areas SEC1, SEC2 calculated based on track information of the on-board unit 5 from the traffic information processing unit 4, the traffic signal controller determines signal controlling parameters for each traveling time using a signal controlling parameter table stored in the memory. Since a cycle length, a split, and an offset in the determined signal controlling parameter are set so as to smooth the traffic most effectively, the traffic signal controller 1 can exert appropriate traffic signal control depending on traffic situations by changing the signal color of the traffic signal 2 based on the cycle length, split and offset. COPYRIGHT: (C)2010,JPO&INPIT

Traffic signal controller, computer program, and traffic signal control method

The present invention relates to a traffic information distribution system that distributes, to a target vehicle, traffic information including wrong-way vehicle information as information on a wrong-way vehicle traveling in a wrong-way direction opposite to a designated travel direction of a road.

Traffic information distribution system and traffic information system, traffic information distribution program, and traffic information distribution method

A traffic control system sets a target value related to a travel state based on a correlation between a vehicle travel speed and a traffic volume, and controls multiple vehicles (CS) on a road in accordance with the target value as a common target value. The target value can be set based on a predicted traffic volume at a region (103) that is ahead of, in a vehicle travel direction, the multiple vehicles on the road. For example, the traffic control system sets, as the target value, a target speed or a target value of a parameter related to an inter-vehicle distance.

Traffic control system, vehicle control system, traffic regulation system, and traffic control method

Systems, methods, and apparatuses are described for estimating traffic conditions on road segments when no real time traffic data is available. A computing device may access a road topology comprising links from a geographic database. One of the links is selected from road topology. The computing device identifies a subset of the road topology having neighboring links that have an influentual conditional probability on the selected link. In one example, the subset of the neighboring links includes parent links for the selected link, child links for the selected link, and parents of child links of the selected link. The computing device generates a traffic estimation model for the selected link using the subset of road topology and historical traffic data for the neighboring links.

Traffic classification based on spatial neighbor model

PROBLEM TO BE SOLVED: To collect information about a travel track of a vehicle, to perform dangerous traveling decision of the vehicle based on the information, and to provide warning information to the vehicle or a peripheral vehicle. SOLUTION: Track data of the vehicle traveling on a road are collected (S1), a lane and a road section wherein the vehicle travels are specified by use of a road map database storing road section date in each the lane based on the collected track data of the vehicle (S2), it is detected whether a travel direction of the specified lane of the road section and a traveling direction of the vehicle accord or not (S3), it is decided that the vehicle reversely travels when they are opposite directions (S4), and reverse traveling warning information is outputted when the decision of the reverse traveling is performed (S5, S9). COPYRIGHT: (C)2009,JPO&INPIT

Dangerous traveling information provision device, dangerous traveling decision program and dangerous traveling decision method

PROBLEM TO BE SOLVED: To accurately decide traffic information such as a traffic jam degree by considering waiting for a traffic light to change to obtain an accurate travel time when obtaining travel time information by use of information of a probe vehicle. SOLUTION: Position/speed data of the vehicle traveling in a road section are collected (S1), a traffic light waiting time and a frequency of the waiting for the traffic light to change in the road section of the vehicle are calculated based on a collected speed V of the vehicle (S6), and the traffic light waiting time is subtracted from the travel time of the road section (S8) to calculate the net travel time of the road section, and the traffic information such as the traffic jam degree of the road section is decided based on the net travel time (S10). COPYRIGHT: (C)2009,JPO&INPIT

Traffic information calculation device, traffic information calculation program and traffic information calculation method

PROBLEM TO BE SOLVED: To accurately obtain traffic volume in a free flow (non-congestion) state. SOLUTION: Speed data of a vehicle traveling in a road section are collected (S3), and the traffic volume of the road section is estimated by use of prescribed relation between the traffic volume and speed based on the collected speed (S4). The estimated traffic volume is corrected based on one of an occurrence frequency or an occurrence time interval of acceleration/deceleration of the vehicle traveling in the road section, a maximum value of an absolute value of an acceleration of the vehicle traveling in the road section, variation of the speed of the vehicle traveling in the road section, and a lane change frequency of the vehicle traveling in the road section (S8, S9). The correction is based on prediction that a road is congested (not congested) as the occurrence frequency of the acceleration/deceleration is larger (smaller) when the correction is performed based on the occurrence frequency of the acceleration/deceleration of the vehicle, for example. Calculation accuracy of the traffic volume can be improved. COPYRIGHT: (C)2009,JPO&INPIT

Traffic volume calculation device, traffic volume calculation program and traffic volume calculation method

PROBLEM TO BE SOLVED: To provide a traffic information processing device for preventing erroneous prediction of occurrence of a traffic event such as congestion even in a condition where the amount of data of collected probe information is small.SOLUTION: A center device 5 includes: setup means 20 for setting, as a link group, a road section including continuous plural links; acquisition means 21 for acquiring probe information for the road section that is set as the link group; calculation means 22 for calculating travel time or travel speed for each link included in the link group on the basis of the probe information; and correction means 23 for smoothing the travel time or travel speed for a certain object link by using travel time or travel speed for an adjacent link that is adjacent to at least the target link on the basis of setup information for the link group, thereby correcting the travel time or travel speed for each link calculated by the calculation means 22.

Traffic information processing device, traffic information processing system, program, and traffic information processing method

PROBLEM TO BE SOLVED: To calculate the optimal signal parameter to cancel traffic congestion at an intersection, by grasping the traffic congestion circumstances of a road leading to the intersection based on probe information collected from a probe vehicle. SOLUTION: In a traffic control center 5, probe information, including the information of the location and speed of a vehicle at every traveling time is collected, and the traffic congestion tailing location of a road leading to the intersection is grasped based on the collected probe information, and the optimal green signal time of each traffic light 6 is controlled so that traffic congestion of the intersection is solved from the traffic congestion tailing location of each road that connects to the intersection. COPYRIGHT: (C)2009,JPO&INPIT

邦彦福永

Papers

Dangerous traveling information provision device, dangerous traveling decision program and dangerous traveling decision method

Traffic information calculation device, traffic information calculation program and traffic information calculation method

Traffic volume calculation device, traffic volume calculation program and traffic volume calculation method

Traffic information processing device, traffic information processing system, program, and traffic information processing method

Traffic signal controller, program, and method

邦彦 福永

Papers

Dangerous traveling information provision device, dangerous traveling decision program and dangerous traveling decision method

Traffic information calculation device, traffic information calculation program and traffic information calculation method

Traffic volume calculation device, traffic volume calculation program and traffic volume calculation method

Traffic information processing device, traffic information processing system, program, and traffic information processing method

Traffic signal controller, program, and method

邦彦福永