| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 340909000 | Plural intersections under common central station control | 26 |
| 20080238720 | System And Method For Intelligent Traffic Control Using Wireless Sensor And Actuator Networks - Disclosed is a system and method for intelligent traffic control using wireless sensor and actuator networks. The system comprises a control center, M regional gateways, and N sensor and actuator nodes. The N sensor and actuator nodes and L cluster heads form L clusters. Each cluster includes a cluster head and at least a sensor and actuator node. The control center, the M regional gateways, and the N sensor and actuator nodes form a multi-layer structure. Each N sensor and actuator node may real-time detect traffic states, and exchange information with other nodes via a wireless communication having a self-recovery function. The system and method applies a distributed computing strategy to automatically adjust the traffic control on each traffic flow, thereby achieving an efficient traffic control. | 10-02-2008 |
| 20090066540 | Centralized route calculation for a multi-hop streetlight network - A system and various apparatus and methods performed therein configured for calculating routes touching and monitoring and controlling streetlights includes a multiplicity of streetlight controllers and a local coordinator. Each streetlight controller includes a switch operative to control the operation of a load, a sensor operative to monitor the operation of the load, a processor, and a radio transceiver operative to receive control data and transmit data associated with the streetlight controller. The local coordinator includes a coordinator radio transceiver, and a coordinator processor operative to maintain a list of the multiplicity of streetlight controllers and, cooperatively with the coordinator radio transceiver, exchange messages with any of the multiplicity of streetlight controllers. | 03-12-2009 |
| 20090212973 | Apparatus, program and storage medium for notifying intersection information - A signal sequence of a traffic signal is notified for a driver of a vehicle that is heading for an intersection by using a signal sequence notification apparatus. If the apparatus determines, based on received signal sequence information, that the information indicates that the traffic signal is currently allowing an entrance into the intersection having the next signal sequence indicating that entrance is not allowed with no right turning permission, the driver receives warning about the entrance into the intersection. The warning thus decreases the possibility of the vehicle to be brought to a standstill in the intersection due to the traffic signal that has a signal sequence of no right/left turn by the right/left turn light after a signal change from GO to STOP regarding the straight traffic. | 08-27-2009 |
| 20090322563 | Autonomous provisional smart traffic signal station - The present invention discloses a mode selectable autonomous provisional traffic signal station unit for establishing traffic control signal light units for mode selectable alternate traffic control configurations. The autonomous provisional traffic signal station further comprises a mode switch to engage unit logic to receive wireless broadcast protocol seeking a slave unit or broadcast protocol as a master unit seeking a slave unit, and programming logic for co-operating traffic control of a road segment managing un-manned two direction vehicle traffic over a temporarily converged alternating one direction flow. An un-manned traffic grid mode is also disclosed | 12-31-2009 |
| 20100079306 | TRAFFIC FLOW MONITORING FOR INTERSECTIONS WITH SIGNAL CONTROLS - A method and system are provided for determining travel time through intersections by assigning an initial position for a virtual probe in the intersection and updating the position and velocity for the virtual probe such that the position and velocity of the virtual probe are determined multiple times from a time when the virtual probe is at an initial position until the time when the updated position of the virtual probe is past a stop line at the intersection. Updating the position and velocity of the virtual probe involves retrieving vehicle detection data and traffic control signal data to determine a distance from the virtual probe to the closer of a stop line and a vehicle in a queue in front of the virtual probe. The length of the queue is determined using the intersection of two shockwaves. | 04-01-2010 |
| 20100321208 | System and Method for Emergency Communications - A system for emergency communications operates as a static network device for selectively receiving traffic control data from a mobile node. The system includes a transceiver for receiving a device identifier over a network from the mobile node, the device identifier derived from a combination of user-configurable and non-user-configurable parameters of the mobile node, and a processor coupled to the transceiver and to memory storing executable code. Executed, the code allows the processor to access a database of authorized device identifiers corresponding to known mobile nodes, to establish, in response to the received device identifier matching an authorized device identifier, a secure private network with the mobile node, to receive node location data for the mobile node, the node location data comprising (a) a distance between the mobile node and the device and (b) a velocity at which the mobile node changes its position with respect to the device, and to receive, in response to the node location data meeting a defined criteria, the traffic control data from the mobile node. | 12-23-2010 |
| 20110080303 | COMPUTERIZED TRAFFIC SIGNAL SYSTEM - Traffic through a portion of a city formed of streets defining a grid includes clusters of traffic signs, each cluster being positioned at an intersection and having its own cluster process controller. The clusters also include cameras monitoring traffic through and at each intersection. The cameras provide information used locally or at remote localities to control traffic. The remote localities may include a traffic command center, fire/police stations or a home security office. | 04-07-2011 |
| 20110084854 | Monitoring Management and Presentation of Preemption Control Data of Centrally Managed Traffic Signals - Managing traffic signal preemption data accumulated at a plurality of intersections. In one approach a method includes reading the preemption data stored at each of the intersections. The preemption data includes for each preemption request an emitter code, and a date and a time the preemption request was submitted. The preemption data read from the intersections are stored in a database, and each emitter code is associated with a vehicle name in the database. Selected preemption data and associated vehicle names are read from the database in response to user input, and the selected preemption data and associated vehicle names are displayed. The database further stores data identifying the intersection from which the preemption data was read. | 04-14-2011 |
| 20120112928 | TRAFFIC SIGNAL CONTROL SYSTEM, TRAFFIC SIGNAL CONTROL APPARATUS, AND TRAFFIC SIGNAL CONTROL METHOD (AS AMENDED) - Provided is a traffic signal control system that can operate in a flexible and sophisticated manner by, after selecting a pattern of a traffic signal control parameter corresponding to the current time using a first pattern switching table that is used in a time-controlled pattern selection scheme, selecting again a pattern using an additional second pattern switching table, where a call condition for selecting a set pattern is set in the second pattern switching table, and by selecting the pattern set in the second pattern switching table in place of the pattern selected in the first pattern switching table if a calculated travel time matches the call condition. | 05-10-2012 |
| 20150061896 | TRAFFIC MANAGEMENT SYSTEM - A real-time traffic management system comprising a main light controller module configured to monitor and control functionality of one or more traffic lights, a master control unit server software application, a network operations control module, and a network watcher application program. The main light controller nodule communicates with one or more coordinating light controller modules, onsite personnel, and a network operations center. The main light controller uses a camera that detects instances of vehicle demand and provides live Images for situational awareness. The main light controller module comprises a global positioning satellite receiver and a light sensor for monitoring ambient lighting conditions. The network watcher application program continuously scans incoming data, monitors performance of all components in the system, and issues alerts and alarms to notify personnel of events or conditions outside of established tolerances. | 03-05-2015 |
| 20150102945 | MULTI-AGENT REINFORCEMENT LEARNING FOR INTEGRATED AND NETWORKED ADAPTIVE TRAFFIC SIGNAL CONTROL - A system and method of multi-agent reinforcement learning for integrated and networked adaptive traffic controllers (MARLIN-ATC). Agents linked to traffic signals generate control actions for an optimal control policy based on traffic conditions at the intersection and one or more other intersections. The agent provides a control action considering the control policy for the intersection and one or more neighbouring intersections. Due to the cascading effect of the system, each agent implicitly considers the whole traffic environment, which results in an overall optimized control policy. | 04-16-2015 |
| 20150294569 | CORNER SENSOR ASSEMBLY - A corner sensor assembly includes a housing having at least one magnet attached thereto, wherein the magnets allow the corner sensor assembly to be readily attached and relocated to corner structures within a building. The assembly includes at least one motion sensor for detecting motion within two opposing fields of monitoring. At least one visual indicator is activated when the motion sensors detect motion within both fields of monitoring and are deactivated when no motion is sensed in at least one of the fields of monitoring. The assembly includes an integrated power supply located within the housing. | 10-15-2015 |
| 20180025630 | ROADSIDE COMMUNICATION DEVICE, DATA RELAY METHOD, CENTRAL APPARATUS, COMPUTER PROGRAM, AND DATA PROCESSING METHOD | 01-25-2018 |
| 340910000 | Central station responsive to traffic detectors | 12 |
| 20080204277 | Adaptive traffic signal phase change system - This patent provides a process that utilizes the vehicle to infrastructure communication process to gather anonymous vehicle trajectories that describe vehicles approaching a signalized intersection. This information is used to project forward in-time the positions of vehicles to calculate the optimal time to change the traffic signal at a point that will minimize the delay to the traffic. | 08-28-2008 |
| 20100321209 | System and Method for Traffic Information Delivery - A system and method for traffic information delivery may be implemented as a static network device for sharing information with network nodes. The system includes a processor in communication with a transceiver and memory, the memory containing code that when executed by the processor effects the method steps for determining an occurrence of a traffic incident within a defined distance from the device, establishing communication with a network node, receiving a device identifier over a public network from the network node, the device identifier based on a user-configurable parameter and a non-user-configurable parameter of the network node, establishing in response to the device identifier matching an authorized device identifier corresponding to a known network node, a secure private network with the network node, and sending information about the traffic incident to the network node via the secure private network. | 12-23-2010 |
| 20110037619 | Traffic Routing Using Intelligent Traffic Signals, GPS and Mobile Data Devices - A traffic routing system reduces emissions from commuter and other traffic, eases congestion on roadways, and decreases transit time by use of communications among vehicles and traffic controls, such as traffic lights. In one aspect, a traffic light receives a signal that a vehicle is approaching and in response turns green to allow the vehicle to pass without impairment. In another aspect, a vehicle receives a signal to adjust a current rate of speed to arrive when a traffic signal allows vehicles to pass. In still another aspect, a combination of congestion, emergency traffic, roadwork and similar factors influence proposed routes sent to vehicles. | 02-17-2011 |
| 20110109479 | Method and System for Collecting Traffice Data, Monitoring Traffic, and Automated Enforcement at a Centralized Station - A distributed individual vehicle information capture method for capturing individual vehicle data at traffic intersections and transmitting the data to a central station for storage and processing is provided. The method includes capturing individual vehicle information at a plurality of intersections ( | 05-12-2011 |
| 20120038490 | OUTDOOR LIGHTING FIXTURES FOR CONTROLLING TRAFFIC LIGHTS - An outdoor lighting fixture for communicating with a traffic light system is shown and described. The outdoor lighting fixture includes a ballast for providing current to at least one lamp and a fixture housing at least partially surrounding the ballast and the at least one lamp. The outdoor lighting fixture further includes a mount configured to hold the fixture housing to a pole and a control circuit wired to the ballast. A sensor and a radio frequency transceiver are wired to the control circuit. The control circuit is configured to process inputs from the sensor to determine whether to send a light change instruction to the traffic system via the radio frequency transceiver. | 02-16-2012 |
| 20130099942 | Traffic Signal Control System and Method - The invention relates to a traffic signal control system for controlling a plurality of signal junctions comprising a signal group oriented multi-agent control scheme, each agent operates independently and represents one or more traffic signals at a signal junction; means for each agent for determining traffic conditions at its signal junction and traffic conditions at neighbouring agents; and means for applying fuzzy logic in signal control operations, wherein signal control operation is based on traffic conditions at each agent and one or more neighbouring agents, such that the control operation is distributed to each agent to control each of said plurality of signal junctions. An advantage of the system is that this approach in combining the flexible signal group control with the artificial intelligence of fuzzy logic dynamic control is achieved. The operation of the control system is based on detector data input, that is refined to real time traffic situation model. Through the traffic model, the decision part of the system (fuzzy logic) is observing the traffic situation in the whole intersection. The signal control operation is based on signal group orientation, in which the control operation is distributed to several signal group agents. | 04-25-2013 |
| 20130162449 | Traffic Routing Using Intelligent Traffic Signals, GPS and Mobile Data Devices - A traffic routing system reduces emissions from commuter and other traffic, eases congestion on roadways, and decreases transit time by use of communications among vehicles and traffic controls, such as traffic lights. In one aspect, a traffic light receives a signal that a vehicle is approaching and in response turns green to allow the vehicle to pass without impairment. In another aspect, a vehicle receives a signal to adjust a current rate of speed to arrive when a traffic signal allows vehicles to pass. In still another aspect, a combination of congestion, emergency traffic, roadwork and similar factors influence proposed routes sent to vehicles. | 06-27-2013 |
| 20150310737 | TRAFFIC CONTROL SYSTEM AND METHOD OF USE - An automated traffic control process and system providing automatic remote monitoring the locations of one or more remote vehicles, determining which vehicles fall within one or more preference categories, and if a vehicle in a particular preference category is detected as approaching a remote intersection, issuing a preemption instruction to a traffic signal controller for the remote intersection. Various other process and system features can include one or more among: monitoring numerous vehicles and intersections, vehicle location monitoring, categorization, and issuance of preemption instructions on a centralized computing system; safety or other condition assessment and control of issuance of signaling instructions accordingly; determination of whether one or more the traffic intersection signaling controller should be operating according to one among differing hierarchical condition categories, and issuance of instructions causing remote traffic signaling to lock in a particular state, such as, for example in a right of way state. | 10-29-2015 |
| 20160379490 | TRAFFIC CONTROL SYSTEM AND METHOD OF USE - An automated traffic control process and system providing automatic remote monitoring the locations of one or more remote vehicles, determining which vehicles fall within one or more preference categories, and if a vehicle in a particular preference category is detected as approaching a remote intersection, issuing a preemption instruction to a traffic signal controller for the remote intersection. Various other process and system features can include one or more among: monitoring numerous vehicles and intersections, vehicle location monitoring, categorization, and issuance of preemption instructions on a centralized computing system; safety or other condition assessment and control of issuance of signaling instructions accordingly; determination of whether one or more the traffic intersection signaling controller should be operating according to one among differing hierarchical condition categories, and issuance of instructions causing remote traffic signaling to lock in a particular state, such as, for example in a right of way state. | 12-29-2016 |
| 340911000 | Central station controls offset (time between beginning of same phase at adjacent intersections) | 3 |
| 20100309022 | DRIVING SUPPORT DEVICE, DRIVING SUPPORT METHOD, AND DRIVING SUPPORT PROGRAM - Information specifying an initial motion of a vehicle when travel is started on a road in a predetermined section is obtained, and information specifying an estimated motion, which is associated in advance with the initial motion, of the vehicle on the road in the predetermined section subsequent to the initial motion is also obtained. Based on the estimated motion, a guidance unit mounted in the vehicle provides guidance for supporting driving when traveling on the road in the predetermined section. | 12-09-2010 |
| 20110121993 | OPTIMIZING TRAFFIC SPEEDS TO MINIMIZE TRAFFIC PULSES IN AN INTELLIGENT TRAFFIC SYSTEM - According to a method of vehicular traffic management, a computer system receives, from devices distributed in a plurality of roadway segments of a physical roadway system, real-time traffic information individually describing vehicular traffic in each the plurality of roadway segments. The computer system determines from the real-time traffic information an advised speed for a particular roadway segment among the plurality of roadway segments. The computer system transmits, via a communication network, a speed advisory command specifying the advised speed to a device in the particular roadway segment for presentation. | 05-26-2011 |
| 20130106620 | ADJUSTING TRAFFIC LIGHTS | 05-02-2013 |
| 340913000 | Offset control | 1 |
| 20120319867 | METHODS AND APPARATUS FOR TRAFFIC SIGNAL TIMING - The system of the invention analyzes 24-hour volume and occupancy data from traffic system detectors for intervals of fifteen minutes. Alternatively ATR (automatic traffic recorder) traffic count data may be used. However, there is a lesser ability to plan for congestion conditions if ATR data is used. The system utilizes three modules, referred to as MAKETIME™, PLANEED™, and SIGCOMP™. The results of processing are three written reports, which are used to develop the most appropriate number of signal timing plans and their schedules for timing traffic signals. | 12-20-2012 |
