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| Number | Title | Issue Date |
| 8063794 | Street lamp system A street lamp system includes an illumination device, a display unit and a control module. The display unit is configured for displaying oncoming traffic information. The control module is communicatively coupled to the illumination device and the display unit, for ... | 11/22/2011 |
| 7432827 | Device for activating inductive loop sensor of a traffic light control system A system and method for activating vehicle sensors which are based on inductive loops. A voltage controlled oscillator is scanned throughout the required frequency range while a balanced mixer, low-pass filter, and detector are arranged to show the presence of a sig... | 10/07/2008 |
| 7408479 | Traffic detection and signal system and method therefor A traffic detection and signal system for pathways within an industrial work environment and method therefor includes at least one sensor positioned to detect objects approaching a pathway intersection and at least one visual indicator electronically linked to the a... | 08/05/2008 |
| 7397390 | Wireless traffic control system A wireless traffic control system and method for wirelessly communicating information using traffic control signs are provided. The method includes wirelessly transmitting at least one of traffic control information and vehicle information from a traffic control sig... | 07/08/2008 |
| 7375648 | Vehicle occupancy identification system An in-vehicle transponder communicates with roadside readers to transmit a data stream of information that has been previously presented to the transponder. The transponder accepts multiple data cards and the identification numbers of the vehicle occupants for trans... | 05/20/2008 |
| 7369503 | Information distribution system Disclosed is an information distribution system in which a receiving terminal installed in a mobile object can reliably receive high quality distribution information from the beginning. The information distribution system comprises data transmission units, each for ... | 05/06/2008 |
| 7362261 | Linear frequency-modulated pulse radar A linear frequency-modulated pulse radar system is provided in which the echo signal is mixed with a de-ramp signal, in order to reduce the bandwidth. The transmission signal of the pulse radar and the de-ramp signal are generated with the same reference oscillator,... | 04/22/2008 |
| 7327280 | Emergency vehicle traffic signal preemption system An emergency vehicle traffic light preemption system for preemption of traffic lights at an intersection to allow safe passage of emergency vehicles. The system includes a real-time status monitor of an intersection which is relayed to a control module for transmiss... | 02/05/2008 |
| 7317406 | Infrastructure-based collision warning using artificial intelligence An improved apparatus for controlling a traffic signal at an intersection includes a signal controller having an artificial intelligence based situational analyzer. The signal controller receives vehicle data related to the speed and position of vehicles approaching... | 01/08/2008 |
| 7246037 | Methods and apparatus for an improved signal monitor A malfunction management unit (MMU) includes advanced diagnostic and set-up capabilities accessed through a display-based user interface. In general, the MMU is capable of displaying (1) monitor status information, wherein the monitor status information includes inf... | 07/17/2007 |
| 7245232 | Emergency vehicle alert system The emergency vehicle alert system may be used for detection of selected sound frequency signals emitted by warning devices of vehicles. A sensor may sense a selected sound frequency signal spectrum and may be in communication with multiple operational amplifiers. T... | 07/17/2007 |
| 7236102 | Vehicle information system for a loop intersection A driver of a vehicle that is going to enter a loop intersection is allowed to perceive vehicles traveling on a loop road and vehicles that are going to enter the loop intersection from separate roads. Infrared ray sensors for detecting vehicles in the loop intersec... | 06/26/2007 |
| 7221289 | System and method for operating a loop detector The temperature of an operator circuit is measured. A relationship between the temperature of the operator circuit and characteristics of the operator circuit is determined. The relationship is applied to the measured temperature of the operator circuit to create an... | 05/22/2007 |
| 7183943 | Model railway traffic light apparatus and control method thereof A model railway traffic light apparatus, including: at least one signal light; a sensor to detect a timing when a toy train which travels along a rail passes through a predetermined position; and a control section to switch sequentially a series of light turning-on ... | 02/27/2007 |
| 7145476 | 2-wire push button station control system for a traffic light controlled intersection A 2-wire control system which communicates with a plurality of pole mounted push button stations of the kind that are found at a traffic light controlled intersection via existing pairs of underground wires over which power and data signals are transmitted so as to ... | 12/05/2006 |
| 7116245 | Method and system for beacon/heading emergency vehicle intersection preemption An emergency vehicle intersection preemption beacon/heading system and method that relies on the use of highly localized, low-power communication system. The system can be implemented in a “car-active” mode or a “car-passive” mode. In the “car-active” mo... | 10/03/2006 |
| 7116248 | Vehicle detector system with synchronized operation A vehicle detector system having a number of individual vehicle detectors each capable of sampling a plurality of vehicle loops in mutual synchronization. One detector operates as a master detector for synchronization purposes; the other detectors are operated as sl... | 10/03/2006 |
| 7113107 | Intelligent selectively-targeted communications systems and methods There is disclosed a system and method wherein precise geographical location information such as Global Positioning System coordinate data is utilized as a principal criterion for implementing other wireless transmitted instructions and communications advising vehic... | 09/26/2006 |
| 7113108 | Emergency vehicle control system traffic loop preemption An emergency vehicle traffic signal preemption system using existing inductive traffic loops that is either “car-active” or “car-passive”. In the “car-active” system, a passive element having position information transmits an ID tag and the position info... | 09/26/2006 |
| 7104509 | Combination model train proximity detector and signal A combination model train sensor and signal includes a train proximity sensor, a signal such as red yellow and green signal lights, semaphores, wig-wag signals and the like together with a controller connected to the proximity sensor and the signal and the controlle... | 09/12/2006 |
| 7102538 | LED signal light The present invention provides an LED signal light device comprising a central processing unit, a control panel, an LED signal light, an output and input interface, a battery and an adapter. The central processing unit comprises a microprocessor, a memory and an int... | 09/05/2006 |
| 7098806 | Traffic preemption system A traffic preemption system is described that includes onboard equipment located on a vehicle and a fleet management center in communication with the onboard equipment. The fleet management center is also in communication with a traffic management center that is in ... | 08/29/2006 |
| 7057529 | LED traffic signal load switch An LED traffic signal having a single switching power supply placed inside the load switch to supply power to each of the aspect signals. The traffic signal has several aspects, such as red, yellow and green. The load switch comprises a switching power supply to sup... | 06/06/2006 |
| 7053797 | Intelligent selectively-targeted communications systems and methods for aircraft There is disclosed a system and method wherein precise geographical location information such as Global Positioning System coordinate data is utilized as a principal criterion for implementing other wireless transmitted instructions and communications advising aircr... | 05/30/2006 |
| 7019669 | Trail safe alert system A pedestrian trail signaling device for warning users of the trail or path when an emergency vehicle is approaching the intersection. Emergency vehicles 14 have an actuatable transceiver that transmits a signal to the trail posted signaling device causing war... | 03/28/2006 |
| 6985090 | Method and arrangement for controlling a system of multiple traffic signals A method and arrangement for controlling a system of multiple traffic signals for regulating the traffic of vehicles is described. Traffic data is transmitted by wireless transmission to traffic data processing units assigned individually to a locally limited group ... | 01/10/2006 |
| 6980125 | Warning light system for alerting pedestrians and passenger vehicle operators of an approaching emergency vehicle A warning light system for a traffic intersection for alerting pedestrians and operators of passenger vehicles to the approach of an emergency vehicle. The warning light system is activated only by sounds in the range of frequencies which are emitted by the siren of... | 12/27/2005 |
| 6975749 | Traffic density analysis method based on encoded video A traffic density analysis method includes decoding encoded video data corresponding to an analysis region to obtain a decoded video signal and code information, determining a moving object in units of a macroblock on the basis of the decoded video signal, the code ... | 12/13/2005 |
| 6967592 | Wireless highway guide A method and system for providing travel guidance for transportation vehicles traveling on a highway system that comprises highway transceivers (HTs) with limited range placed at selected intervals along the highway. Each transportation vehicle has an automobile tra... | 11/22/2005 |
| 6950789 | Traffic violation detection at an intersection employing a virtual violation line A system and method for detecting and filtering non-violation events in a traffic light violation prediction and recording system, including at least one violation prediction image capturing device, such as a video camera, and a violation prediction unit. The predic... | 09/27/2005 |
| 6937161 | Traffic signal control method In traffic signal control for setting a green light time to a value between the lower limit time and the upper limit time in real time depending on a traffic volume sensed by vehicle sensors Sa, Sb, and so forth, the upper limit time Gmax is set longer wi... | 08/30/2005 |
| 6922156 | Vehicle trip determination system and method A method for determining a vehicle trip on a roadway includes providing a plurality of vehicle detections from a plurality of gateways, determining a maximum travel time between corresponding pairs of the plurality of gateways, correlating corresponding pairs of the... | 07/26/2005 |
| 6909380 | Centralized traffic signal preemption system and method of use A system and method of centralizing traffic signal preemption for roadway emergency operations provides for increased accuracy and coordination of emergency response vehicles along an emergency route. A centralized preemption system receives status and location info... | 06/21/2005 |
| 6895324 | Methods and apparatus for storing, accessing, generating and using information about speed limits and speed traps Methods and apparatus for storing, accessing, generating and using information about speed limits and speed traps are described. The system includes a positional sensor such as a GPS device. Position information is used to access a database of speed limit and/or spe... | 05/17/2005 |
| 6885936 | Information provision system and apparatus and method therefor The information provision system includes a terminal having a current position measurement section and a communications controller, which intermittently transmits information on the current position measured, a terminal position management section for managing the p... | 04/26/2005 |
| 6850171 | Method, system and control device for controlling light signal transmitters at intersections A system and method for providing local intersection control includes controlling light signal transmitters at an intersection. A traffic condition at an intersection is cyclically detected, a signal program is selected that is matched to the detected traffic condit... | 02/01/2005 |
| 6801638 | Device and method for recognizing traffic signs The invention concerns a process and a device, which make it possible to reliably, with the least amount of computing power, recognize traffic signs and to display these as memory aids for an observer. Image data of an image sensor are analyzed and classified in an ... | 10/05/2004 |
| 6794987 | Object detection system and method of estimating object size A collision detection system and method of estimating a miss distance of an object and estimating length and width of the object are provided. The collision detection system includes a sensor for sensing an object within a field of view and measuring range and range... | 09/21/2004 |
| 6774816 | Alternating time band sequence “ATBS-2W” A method and system for controlling a vehicular and pedestrian traffic, which combines a variety of concepts into an integrated operating system for traffic management in cities. The design elements of this system include a combination of the dynamic checkerboard ar... | 08/10/2004 |
| 6707391 | Supplemental automotive traffic safety apparatus and method An apparatus and method for supplementing automotive safety includes a transmitter associated with the traffic safety concerns or conditions such as traffic signals, traffic barricades, or pedestrians. The transmitter is adapted to transmit a signal conveying inform... | 03/16/2004 |
