Intersection Normally Under Local Controller Patents (Class 340/916)
  • Patent number: 10068480
    Abstract: When an own vehicle is highly likely to collide with an obstacle, a notification of prompting a driver to carry out a collision avoidance operation is appropriately given. When an output request for collision avoidance support information exists, a notification ECU notifies of the collision avoidance support information irrespective of absence/presence of an output request for vehicle-infrastructure cooperation support information. When the output request for the collision avoidance support information does not exist and the output request for the vehicle-infrastructure cooperation support information exists, the notification ECU notifies of the vehicle-infrastructure cooperation support information.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: September 4, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Katsuhiro Matsuoka, Kazuhiro Morimoto
  • Patent number: 10068470
    Abstract: Navigation devices, services, and methods are provided for determining an average traffic speed for a path segment using probe data from a plurality of navigation devices. The method for determining an average traffic speed may include retrieving probe data from a plurality of navigation devices, each navigation device traveling over at least a portion of a defined path segment for at least a portion of a defined time interval, wherein the probe data for each navigation device comprises an instantaneous velocity of the navigation device. The method may further include calculating a total distance traveled and a total time traveled by the plurality of navigation devices over the path segment and within the time interval using the instantaneous velocities from the retrieved probe data. The average traffic speed may then be determined based on the calculated total distance traveled and total time traveled.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: September 4, 2018
    Assignee: HERE Global B.V.
    Inventor: Mark Pundurs
  • Patent number: 9558666
    Abstract: A system and method for avoiding collisions in a traffic intersection using radar sensors is disclosed. The system detects the location, speed, size, and direction of travel of objects, including vehicles and vulnerable road users, in and approaching a traffic intersection. Using this information, trajectories for all objects are determined, and, if a likelihood of a collision is determined, one or more traffic signal transitions are delayed in an attempt to avoid the collision.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: January 31, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Christer Jansson, Shuvo Bhattacharjee, Hirak Chanda, Ankit Shah, Troy McCormick, Ali Fawaz, Anthony Farrell
  • Patent number: 9524640
    Abstract: In a traffic simulation in which vehicle models, which simulate vehicles, are moved in a road system model including links, which simulate the smallest segment of roads divided by intersections, etc., and nodes, which simulate the intersections, turning points of the roads, etc., the presence/absence of an entering vehicle model that enters a different link from a link in the road system model via the node is judged; the velocity of the entering vehicle model after entering the different link is calculated on the basis of the density of the vehicle models in the different link after the entering vehicle model has entered the different link; and the calculated velocity is set only for the entering vehicle model that has entered the different link.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: December 20, 2016
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Shinichi Tsuburaya
  • Patent number: 8957789
    Abstract: A vehicle support information system mounted in a vehicle, the vehicle support system including: a man-detecting unit; a vehicle-position detecting unit; a communication unit; a man-position/waiting-score calculating unit; a stopping-vehicle determining unit determining whether or not the vehicle should be stopped, based on a man position and a waiting score of an at least one potential-crossing-man; a travelling controller for stopping the vehicle when the stopping-vehicle determining unit determines that the vehicle should be stopped; and a man-crossing-signal display unit displaying information to inform the at least one potential-crossing-man whether or not the at least one potential-crossing-man can safely cross the road, based on an instruction of the stopping-vehicle determining unit, wherein the man-position/waiting-score calculating unit outputs the man-position/waiting-score to the communication unit.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: February 17, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Yoshitaka Hara, Takuya Naka, Saku Egawa, Masashi Koga
  • Patent number: 8917190
    Abstract: A method of restricting turns at vehicle intersections imposes a policy that is dynamic and congestion based. Vehicle turns are allowed only to the extent that such a maneuver does not cause a hindrance to other vehicles traveling the same direction that are not turning. A hindrance may be defined in a variety of ways based on whether other vehicles are substantially impeded in their progress. In this way, such a “no hinder” turn restriction is dependent on actual driving conditions and allows for more efficient movement of traffic in both heavily congested and light driving conditions. A no hinder turn restriction may be combined with or may replace other types of turn restrictions and may be utilized for both left and right turns and for streets with single or multiple lanes.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: December 23, 2014
    Inventor: Stephen Waller Melvin
  • Patent number: 8847788
    Abstract: Methods and systems for traffic management are disclosed. Location information and a vehicle identifier for a vehicle are received. A current status of the vehicle is determined. Further, it is determined whether the vehicle is located within a defined distance from a lane intersection. A traffic indicator is generated when the vehicle is located within the pre-defined distance from the lane intersection. The traffic indicator is one of a Right of Way (ROW), Stop, Yield or Null. The generated traffic signal is transmitted back to the vehicle.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: September 30, 2014
    Assignee: Caterpillar Inc.
    Inventors: Brad K. Borland, Brian G. Funke, Mathew Chacko
  • Patent number: 8830085
    Abstract: Approaches for monitoring traffic signal preemption at one or more intersections. According to one embodiment, a road map that includes a plurality of roads and intersections is displayed with a computer system. Preemption data periodically received by the computer system from at least one preemption controller at a respective intersection is used to update the road map. In response to the preemption data, the road map is updated to include a traffic signal icon at the respective intersection and a vehicle icon at a location on the map corresponding to a location of a vehicle transmitting a preemption request as indicated by the preemption data.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: September 9, 2014
    Assignee: Global Traffic Technologies, LLC
    Inventors: David John Edwardson, David R. Johnson, Kevin Clare Eichhorst, Patrick Keenan Cosgrove, Nicole Maria Montgomery
  • Patent number: 8825350
    Abstract: Systems and method are disclosed for adaptive and/or autonomous traffic control. In one illustrative implementation, there is provided a method for processing traffic information. Moreover, the method may include receiving data regarding travel of vehicles associated with an intersection, using neural network technology to recognize types and/or states of traffic, and using the neural network technology to process/determine/memorize optimal traffic flow decisions as a function of experience information. Exemplary implementations may also include using the neural network technology to achieve efficient traffic flow via recognition of the optimal traffic flow decisions.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: September 2, 2014
    Inventor: Kurt B. Robinson
  • Patent number: 8760315
    Abstract: A system for controlling traffic for allowing passage of an emergency vehicle through an intersection controlled by traffic signals includes an intersection module for transmitting signals for preempting the traffic signals and one or more circuit cards coupled to the intersection module. Each expansion card includes a plurality of contact closures for outputting one or more of the signals for preempting the traffic signals. The intersection module selects an expansion card based on a type of output desired, and further selects one or more contact closures of the selected card for the desired output. The expansion cards allow preempt or vehicle outputs beyond the output that a single card can provide. According to another embodiment, the output expansion is achieved by emulating the communication interface between the intersection module and the traffic signal controller.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: June 24, 2014
    Assignee: E-Views Safety Systems, Inc.
    Inventors: Jarrid Michael Gross, Jonathan Youngman, William Thomas Williamson
  • Patent number: 8749401
    Abstract: A vehicle support system for supporting a man in safely crossing a road without crosswalks installed is provided.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: June 10, 2014
    Assignee: Hitcha, Ltd.
    Inventors: Yoshitaka Hara, Takuya Naka, Saku Egawa, Masashi Koga
  • Patent number: 8736462
    Abstract: 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.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: May 27, 2014
    Assignee: Uniloc Luxembourg, S.A.
    Inventor: Craig Stephen Etchegoyen
  • Patent number: 8730059
    Abstract: 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.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: May 20, 2014
    Assignee: International Business Machines Corporation
    Inventors: William S. Davis, Robert C. McGinley
  • Patent number: 8698651
    Abstract: 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.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: April 15, 2014
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Shigeki Nishimura, Katsuyuki Suzuki, Masafumi Kobayashi, Hiroshi Matsumoto
  • Patent number: 8698650
    Abstract: A method of optimizing the traffic control at a traffic signal-controlled intersection in a road traffic network. The vehicle traffic in entrances to the intersection are controlled by signal groups of a traffic signal system according to associated signal times. For vehicles approaching the signal group, traffic parameters are determined from traffic data using a traffic model according to the signal times, and in order to determine optimal signal times, the traffic parameters are weighted and added up and the target function formed in such a way is optimized by varying the signal times. By individually determining the traffic parameters for each vehicle and individually weighting the traffic parameters according to the strategic relevance thereof for the implementation of a specified traffic strategy, an improved implementation of the specified traffic strategy is made possible.
    Type: Grant
    Filed: July 27, 2009
    Date of Patent: April 15, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Martin Bunz, Jürgen Mück, Andreas Poschinger, Reinhold Tannert
  • Patent number: 8665114
    Abstract: The present invention provides a display for traffic control within a region of traffic flow, comprising an array of lights arranged for illumination to indicate to traffic seeking to negotiate the region in accordance with a first path of travel the likely movement of traffic seeking to negotiate the region in accordance with a second path of travel different from the first, and thus whether said traffic seeking to negotiate the region in accordance with said second path of travel has a right of way over traffic seeking to negotiate the region in accordance with said first path of travel.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: March 4, 2014
    Inventor: Derek Cozens
  • Patent number: 8629785
    Abstract: A traffic resource allocation method is provided for allocating traffic resources around an intersection formed by a first road and a second road. The method includes dividing the first road into two or more first lanes at a first direction and two or more second lanes at a second direction opposite but parallel to the first direction. The method also includes dividing the second road into two or more third lanes at a third direction and two or more four lanes at a fourth direction opposite but parallel to the third direction. Further, the method includes controlling traffic movements in the intersection by allocating traffic permit to both pedestrian traffic and vehicle traffic on the first road and the second road. The method also include, when permitting pedestrian traffic along the first direction and the second direction, permitting through vehicle traffic along the first direction and the second direction, and prohibiting turn traffic at any of the first, second, third, and fourth directions.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: January 14, 2014
    Inventor: Jiantong Ni
  • Patent number: 8487780
    Abstract: Methods and systems for creating an approach map for a traffic signal preemption controller. A road map is displayed, and in response to user input for instantiating a first segment of an approach map, a first instance of a graphical object overlaying one of the plurality of roads is displayed. The one road represents an approach road to an intersection having the preemption controller. First segment location data that describes a first geographical area bounded by the first segment are determined from size and placement of the first instance of the graphical object on the road map and from location data associated with the one road. The first segment location data are stored in association with the approach map for the preemption controller. The preemption controller, once configured with the first segment location data, initiates traffic signal preemption in response to a preemption request transmitted from within the first geographical area described by the first segment location data.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: July 16, 2013
    Assignee: Global Traffic Technologies, Inc.
    Inventor: David John Edwardson
  • Patent number: 8441374
    Abstract: A traveling support device includes: a road-vehicle communication portion that receives first current-signal information relating to a signal displayed by a traffic signal at a first clock time, from a road side transmitter installed on a road; an inter-vehicle communication portion that receives second current-signal information relating to a signal displayed by the traffic signal at a second clock time, from another vehicle that receives the second current-signal information from the road side transmitter; and a signal cycle estimating portion that estimates signal cycle information relating to transition of the signal on the traffic signal on the basis of the first current-signal information received by the road-vehicle communication portion and the second current-signal information received by the inter-vehicle communication portion.
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: May 14, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Akihisa Yokoyama, Takeshi Matsumura, Mitsuhisa Shida
  • Patent number: 8405523
    Abstract: A drive assist device and method capable of preventing the confusion of a driver at a traffic signal with an arrow lamp are provided. An ECU has a section for determining whether or not it is possible to pass a signal, which determines whether or not a vehicle can pass a signal, and a signal waiting time notification control section, which determines a signal waiting time of the vehicle and displays it on a display unit when the section for determining whether or not it is possible to pass a signal determines that the vehicle cannot pass a signal. The section for determining whether or not it is possible to pass a signal determines not only a lighting time of only a red signal but also a lighting time of a red signal and an arrow lamp and a lighting time of a yellow signal subsequent thereto are determined as a no-pass time.
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: March 26, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Yuki Yamada
  • Patent number: 8395530
    Abstract: A traffic control system for converting an intersection into a roundabout during periods of heavy traffic includes a mechanism for monitoring traffic flow through the intersection and about the roundabout. The system also includes a concave opening in and around the intersection and a concrete disc disposed in the cavity, a hydraulic lift is constructed and arranged to elevate the concrete disc above the level of the road and lights provided to alert motor vehicles to enter a roundabout defined by the elevated disc. The system also includes traffic lights for alerting a motor vehicle operator to drive onto the disc or around the disc to use the intersection and/or roundabout.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: March 12, 2013
    Inventor: Khaled Jafar Al-Hasan
  • Patent number: 8390476
    Abstract: An image recording apparatus suitable for recording a traffic signal violation at an intersection controlled by a traffic light is described. The image recording apparatus includes a first camera focused on the intersection, and a second camera focused on a first lane of a street leading to the intersection. A first control circuit is coupled to the first camera causes the first camera to capture a first image at substantially an instant of time that the traffic light indicates a change of traffic control status. The apparatus also includes a detection circuit to detect when a portion of a vehicle crosses a trigger location in the first lane after the change in traffic control status. A second control circuit coupled to the second camera causes the second camera to capture a close-up image of the vehicle in the event that the detection circuit detects the portion of the vehicle at the trigger location after a change in traffic control status.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: March 5, 2013
    Assignee: Redflex Traffic Systems Pty Ltd
    Inventor: Roy William Lock
  • Patent number: 8362923
    Abstract: A traffic control system and device is provided. The traffic control system of the instant invention permits two-way communication between a plurality of traffic signal devices and/or other devices or locations. Each traffic signal device locally controls the state of the traffic signals, while communication between the traffic signal devices is used to synchronize the internal timers or clocks of the plurality of traffic control devices.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: January 29, 2013
    Assignee: Emergency Traffic Systems Inc.
    Inventors: Edward Witte, Glenn Wilkerson
  • Patent number: 8325062
    Abstract: Managing traffic signal preemption at a plurality of intersections. In one approach a security level code that specifies one of a plurality of security levels for at least one jurisdiction is input. The security level controls which emitter codes are allowed to preempt traffic signals at the intersections in the jurisdiction. A set of emitter codes for the plurality of intersections in the jurisdiction is determined in response to the security level code. The set of emitter codes is downloaded to a plurality of preemption controllers at the plurality of intersections in the jurisdiction. Each preemption controller accepts a preemption request only if the preemption request contains an emitter code indicated by the downloaded set of emitter codes as being allowed to preempt traffic signals at the intersections in the jurisdiction.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: December 4, 2012
    Assignee: Global Traffic Technologies, LLC
    Inventor: David Randal Johnson
  • Patent number: 8248271
    Abstract: In accordance with one aspect of the present exemplary embodiment, an LED lamp is provided. In one embodiment, the LED lamp is made to be mounted in a traffic signal housing that includes other lamps, where the LED lamp can be red, yellow, green or another color and can represent a full ball aspect, an arrow aspect or another aspect. The LED lamp is adapted to be powered by an external power source and includes an input power circuit receiving an input voltage from the external power source. The input power circuit includes a power detection circuit that is adapted to determine a power state of the traffic LED lamp. The LED lamp further includes an LED load and a battery powered driving circuit. The battery power driving circuit drives the LED load if the power state of the LED lamp is in a power failure state.
    Type: Grant
    Filed: August 17, 2009
    Date of Patent: August 21, 2012
    Assignee: GE Lighting Solutions, LLC
    Inventors: Mohamed Cherif Ghanem, John Chrisman, Benoit Essiambre, Christian Poirier
  • Patent number: 8248272
    Abstract: The present invention extends to methods, systems, and computer program products for detecting targets in roadway intersections. Transmit antennas transmit signals into a roadway intersection. Receive antennas receive corresponding signal reflections off objects in the roadway. The reflections correspond to two dimensional image data for the roadway intersection. The reflections are conditioned for compatibility with a processor. The processor processes the condition reflections into a two dimensional image of targets in the roadway intersection.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: August 21, 2012
    Assignee: WaveTronix
    Inventors: David V. Arnold, Bryan R. Jarrett, Thomas W. Karlinsey, Ryan L. Smith, Jonathan L. Waite
  • Patent number: 8242933
    Abstract: A one-person remote control system for overriding pre-established control sequences of a traffic light, which control system is compatible with plug-in communications connectors conventionally provided with traffic light controllers. The remote control system comprises a stationary signal transfer unit which has a signal receiver and a plug-in connector for communicating with the traffic light controller, and a mobile control unit disposed to receive manual commands from the person providing overriding control, and a transmitter for transmitting manual overriding command signals to the stationary signal transfer unit.
    Type: Grant
    Filed: July 18, 2009
    Date of Patent: August 14, 2012
    Assignee: Ibis Tek, LLC
    Inventor: Nicholas Pashel
  • Patent number: 8237589
    Abstract: An adjusting system for traffic lights includes a number of image capture units, a processing unit, and a storage system. The number image capture units capture a number of car images. The storage system examines the number of car images to find license plates in each car image, counts the number of the cars, obtains the status of the traffic lights according to the number of the cars, and manages status of the traffic lights correspondingly.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: August 7, 2012
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Hou-Hsien Lee, Chang-Jung Lee, Chih-Ping Lo
  • Patent number: 8237590
    Abstract: An apparatus and method for testing an independent monitoring circuit in an LED traffic signal is provided. The apparatus comprises: a proof test circuit embedded within the traffic signal; and a proof test device embedded within the traffic signal. The method comprises: via the proof test circuit, simulating a faulty traffic signal state; activating the independent monitoring circuit without switching the traffic signal into a high impedance state; energizing the proof test device; and via the proof test device, communicating externally the current state of the independent monitoring circuit.
    Type: Grant
    Filed: April 28, 2008
    Date of Patent: August 7, 2012
    Assignee: GE Lighting Solutions, LLC
    Inventors: Dan Mihai, Michel Doss, Mohamed Ghanem
  • Patent number: 8138948
    Abstract: The present invention describes a sealed, automatic sign that displays a traffic sign (such as a stop or yield sign) visible when the power to the sign is interrupted. The sign has a shade, which covers the stop sign within the frame work while the power is on. When the power is interrupted, the shade lowers, revealing the traffic sign. When power is returned the shade is then drawn up to its original state, concealing the traffic sign.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: March 20, 2012
    Inventors: Mark C. Votava, Timothy E. Paulin
  • Patent number: 8094040
    Abstract: A siren sensor for detecting siren sounds emitted from emergency vehicles and electronic processing circuits for detecting and identifying the siren sounds electronically to control the traffic signal lights at an intersection to permit only the emergency vehicle to travel through an intersection with the right of way. The method and apparatus utilizes an acoustic horn in combination with a microphone for receiving the siren sounds and converting them to corresponding electrical signals. A conventional horn is modified to function as an acoustic lens to filter and amplify the siren sounds applied to the microphone. The modified acoustic horn and microphone combination comprise a tuned and directional audio sensor sensitive in the frequency range of an emergency vehicle siren. The electronic signal processing circuitry amplifies the resulting microphone signals to obtain the maximum sensitivity to the frequency spectrum of siren sounds.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: January 10, 2012
    Inventors: Robertt H. Cornett, Jeffery I. Berlin
  • Patent number: 8063791
    Abstract: According to one embodiment, an electronic apparatus includes: an indicator configured to indicate an operation status of a device; a switch configured to receive an input; a time determination module configured to determine whether an input time during which the input is continually received by the switch exceeds a predetermined first time; a lighting controller, when the time determination module determines that the input time passes the first time, configured to control the indicator so as to be turned on in a first lighting pattern; a detector configured to detect an end of the input received by the switch; and a processor, when the time determination module determines that the input time is greater than or equal to the first time and the detector detects the end of the input received by the switch, configured to perform predetermined first processing.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: November 22, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Akihito Shibahara
  • Patent number: 7986248
    Abstract: An image recording apparatus suitable for recording a traffic signal violation at an intersection controlled by a traffic light is described. The image recording apparatus includes a first camera focused on the intersection, and a second camera focused on a first lane of a street leading to the intersection. A first control circuit is coupled to the first camera causes the first camera to capture a first image at substantially an instant of time that the traffic light indicates a change of traffic control status. The apparatus also includes a detection circuit to detect when a portion of a vehicle crosses a trigger location in the first lane after the change in traffic control status. A second control circuit coupled to the second camera causes the second camera to capture a close-up image of the vehicle in the event that the detection circuit detects the portion of the vehicle at the trigger location after a change in traffic control status.
    Type: Grant
    Filed: May 20, 2005
    Date of Patent: July 26, 2011
    Assignee: Redflex Traffic Systems Pty Ltd
    Inventor: Roy William Lock
  • Patent number: 7969324
    Abstract: An automatic vehicular traffic flow control technique defines a controlled area, wherein vehicles belonging to different traffic streams contend for occupancy of a conflict zone. A traversal order is computed for the vehicles in the controlled area, wherein the ordered vehicles are assigned to traverse the conflict zone sequentially in accordance with their respective positions in the traversal order. Tracking and tracked vehicles are designated, wherein a respective tracked vehicle immediately precedes each of the tracking vehicles in the traversal order. The tracking vehicles maintain a specified physical relationship with their respective tracked vehicles until the tracked vehicle has traversed the conflict zone. The speed of the traffic streams is increased as necessary so as to achieve a desired throughput through the conflict zone.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: June 28, 2011
    Assignee: International Business Machines Corporation
    Inventors: Dan Shmuel Chevion, Dov Ramm, Yuval Shimony, Ron Sivan
  • Patent number: 7898432
    Abstract: A method and system for determining right of way for a plurality of mobile units at an intersection. The method and system include collecting position and movement information about the plurality of mobile units approaching the intersection; storing a plurality of rules about right of way at the intersection; accessing information about geometry of the intersection; calculating which one or more of the plurality of the mobile units have right of way to enter the intersection, responsive to the position and movement information, the stored rules and the information about geometry of the intersection; and wirelessly transmitting right of way indication signals to one or more of the plurality of the mobile units.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: March 1, 2011
    Assignee: Kapsch Trafficcom AG
    Inventors: Justin Paul McNew, John Thomas Moring, Khaled I. Dessouky
  • Publication number: 20110046873
    Abstract: In order to precisely specify a lighting pattern of an actual traffic signal, traveling direction information indicating a traveling direction of a vehicle at a signalized intersection is acquired from a plurality of vehicles, and the information on the lighting pattern of the traffic signal at the signalized intersection is acquired based on the traveling direction information of the plurality of vehicles.
    Type: Application
    Filed: February 27, 2009
    Publication date: February 24, 2011
    Applicant: Aisin AW Co., Ltd.
    Inventor: Kenji Nagase
  • Publication number: 20100283631
    Abstract: A stop sign system that promotes safer, more orderly and more efficient vehicular and pedestrian traffic at intersections, which are barely or not eligible for traffic signal lights, by integrating a simple and easy-to-understand new lighting system into the familiar stop sign with automatic and manual controls. This system also promotes safer school crossings, as well as intersections with emergency situations and construction activity.
    Type: Application
    Filed: May 8, 2009
    Publication date: November 11, 2010
    Inventor: ALTON M. BRYANT
  • Patent number: 7808401
    Abstract: Various approaches for activating a traffic control preemption system. The traffic control preemption system has a receiver with a photodetector and circuitry that produces a number of electrical pulses in response to each detected light pulse. For each detected light pulse the number of electrical pulses represents a level of radiant power of the light pulse. A threshold number of electrical pulses and an activation frequency at which the threshold number of electrical pulses is repeated activates preemption. Control circuitry is coupled to a light emitter and controls the light emitter to emit bursts of light pulses. Each burst includes at least two light pulses and the control circuitry controls the frequency of light pulses in each burst and the frequency of the bursts to cause the receiver to produce at least the threshold number of electrical pulses at the activation frequency and activate the preemption.
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: October 5, 2010
    Assignee: Global Traffic Technologies, LLC
    Inventors: Mark Schwartz, Charles Meyer
  • Patent number: 7804424
    Abstract: There is provided an automatic guide apparatus for traffic facilities capable of automatically recognizing the circumstances around the traffic facilities for motor vehicles or the like which change momentarily to automatically guide the operating route of the road or the like. In the automatic guide apparatus for traffic facilities 1, image data, voice data or the like in connection with the circumstances around the traffic facilities to be operated obtained by the input device 2 are compared with image data, voice data or the like stored in advance in a database by the comparison device 4. Where the results obtained by comparing the image data, voice data or the like are coincided, the contents of the data are recognized by the recognition device 5, and the recognized results are informed to an operator or the like in a letter or character, an image, a voice or the like by the output device 6.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: September 28, 2010
    Assignee: Iwane Laboratories, Ltd.
    Inventor: Waro Iwane
  • Patent number: 7768427
    Abstract: Vehicular traffic data is obtained using a traffic sensor having an antenna/transceiver module, a DSP and a microcomputer. This involves (a) transmitting radiation at a vehicles on a roadway; (b) receiving the radiation reflected back from the vehicles; (c) producing a stream of electrical signals based on the radiation reflected back from the vehicles; (d) processing the stream of electrical signals using the DSP to determine if a vehicle detection threshold is met, and, if the vehicle detection threshold is met, to determine an initial vehicle position; (e) when the vehicle detection threshold is met, generating a first signal representing the initial vehicle position using the DSP; (f) transmitting the first signal to the microcomputer; (g) deriving a first traffic information signal from the first signal using the microcomputer; (h) transmitting the first traffic information signal to an external traffic management system.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: August 3, 2010
    Assignee: Image Sensign Systems, Inc.
    Inventor: Dan Manor
  • Patent number: 7764193
    Abstract: A traffic regulation system (100) includes a first traffic light (110) for controlling traffic in a first direction, a second traffic light (120) for controlling traffic in a second direction intersecting the first direction, an infrared light detector (130) for receiving an infrared light signal transmitted from a pedestrian proceeding in the second direction on a pedestrian crossing and producing a corresponding feedback signal associated with the infrared light signal, and a control unit (160) for receiving the feedback signal from the infrared light detector and instructing the first traffic light and the second traffic light to signal the pedestrian to proceed in the second direction.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: July 27, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Ga-Lane Chen
  • Patent number: 7663505
    Abstract: A smart traffic control device transmits information to approaching vehicles regarding its current and future state enabling vehicles to control their speed to avoid arriving at the traffic control device until it permits the passage of traffic, thus avoiding stopping, idling and reaccelerating when reaching the traffic control device. In other embodiments the traffic control device or systems receives information from vehicles, transmitting it to other vehicles.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: February 16, 2010
    Inventor: Mark W. Publicover
  • Patent number: 7646311
    Abstract: Embodiments of the invention include methods and apparatuses relation to traffic control systems. In one embodiment, a traffic condition is identified by capturing a traffic image, masking the traffic image to obtain an image portion including a traffic image object, and generating the traffic condition based on the traffic image object and the traffic image portion.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: January 12, 2010
    Inventors: Nitin Afzulpurkar, Huynh Huu Phuong
  • Patent number: 7639159
    Abstract: A method and system for determining right of way for a plurality of mobile units at an intersection. The method and system include collecting position and movement information about the plurality of mobile units approaching the intersection; storing a plurality of rules about right of way at the intersection; accessing information about geometry of the intersection; calculating which one or more of the plurality of the mobile units have right of way to enter the intersection, responsive to the position and movement information, the stored rules and the information about geometry of the intersection; and wirelessly transmitting right of way indication signals to one or more of the plurality of the mobile units.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: December 29, 2009
    Assignee: Kapsch Trafficcom AG
    Inventors: Justin Paul McNew, John Thomas Moring, Khaled I. Dessouky
  • Patent number: 7633408
    Abstract: The Invention is a center-of-intersection portable traffic light for emergency use. The portable traffic light features a cart with wheels, a telescoping light standard and one or more light assemblies. A preemption signal detector and traffic detector detect emergency vehicles and traffic, respectively. A control system controls the operation of the portable traffic light. A radio transceiver allows the portable traffic light to communicate with the other portable traffic lights. One of the portable traffic lights in a group acts as a master and controls operation of slave portable traffic lights. Any of the portable traffic lights in a group may act as master and any may act as slave.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: December 15, 2009
    Inventors: John Yingst, David Krahulec, Albert Voehringer
  • Patent number: 7592927
    Abstract: A system and method for controlling transportation traffic signal beacons including powering a signal, encoding a signal state, and decoding the signal state at the beacon is presented. Furthermore, traffic signal beacons may be placed along the length of a bridge to warn of a bridge collapse. The metallic cable that powers the beacons may also function as a bridge collapse detection sensor.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: September 22, 2009
    Inventors: Robert A Marshall, Fred R Marshall
  • Patent number: 7586421
    Abstract: A traffic control system and device is provided. The traffic control system of the instant invention permits two-way communication between a plurality of traffic signal devices. Each traffic signal device locally controls the state of the traffic signals, while communication between the traffic signal devices is used to synchronize the internal timers or clocks of the plurality of traffic control devices.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: September 8, 2009
    Assignee: Emergency Traffic Systems, Inc.
    Inventors: Edward Witte, Glenn Wilkerson
  • Patent number: 7573400
    Abstract: The present invention extends to configuring detection zones in a traffic monitoring system and to association of detection zones with corresponding traffic signal phases. One or more sensors detect targets within a roadway intersection. The sensors integrate acquired sensor data for the targets into track files. The track files are subsequently used to identify common target paths. A histogram is used to identify common target positions for stationary targets. From the common target positions and the common target paths detection zones are configured. Detection zones are associated with traffic signal phases so that specific detections can be created. Lane boundaries within the roadway intersection are inferred from the common target paths. Permanent stationary target locations are identified from the common target positions.
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: August 11, 2009
    Assignee: Wavetronix, LLC
    Inventors: David V. Arnold, Bradley C. Giles, Logan C. Harris, Bryan R. Jarrett, Thomas W. Karlinsey, Jonathan L. Waite
  • Patent number: 7482948
    Abstract: Disclosed are alert systems and methods for a roadway. According to one exemplary method, there is a step of receiving an identification signal from a device carried by a human having a medical condition. Subsequently, circuitry acts to conditionally cause a changeable road sign to display the medical condition, and conditionally transmit a radio warning signal to a vehicle, the radio warning signal indicating the medical condition.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: January 27, 2009
    Assignee: International Business Machines Corporation
    Inventors: Tedrick N. Northway, Randy S. Johnson
  • Patent number: 7468680
    Abstract: A traffic light safety zone is a painted marked area, of parallel lines, approaching a traffic intersection to warn motorists whether they can safety proceed through the road intersection before a traffic sign light turns red, the zones are configured to indicate whether a motorist in the zone has clearance at a designated speed to proceed and cross with safety, the zone parallel colored thermal plastic painted lines form a visual indicator, and give an audio output due to the thickness of the thermal painted plastic; a distinctive traffic sign indicates to motorists of an approaching traffic light safety zone.
    Type: Grant
    Filed: June 24, 2006
    Date of Patent: December 23, 2008
    Inventor: John Heffernan