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6064301 |
Roadway deviation prevention system
A roadway deviation prevention system prevents a vehicle from deviating from the roadway. This roadway deviation prevention system has an on-vehicle transceiver which transmits a vehicle presence...
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6064320 |
Automatic vehicle identification system capable of vehicle lane discrimination
A system of vehicle identification with a first interrogator that uses a Lower SideBand (LSB) receiver to receive a modulated signal from a vehicle transponder and a second interrogator that uses...
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6052068 |
Vehicle identification system
A vehicle identification system for identifying motor vehicles in a group of vehicles at distances in excess of 200 feet is disclosed. The system includes an interrogator for directionally...
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6042008 |
Toll collection system of toll road and in-vehicle unit for the same
To ensure the toll collection of a vehicle carrying an in-vehicle unit without stopping the vehicle at an entrance toll gate or an exit toll gate, an entrance toll gate lane is equipped...
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6040785 |
Mixed lock type toll collecting system and method for toll collection of vehicles on toll road
A toll collecting system having a lock-type management for toll collection of vehicles in a toll road such as an express way. The mixed lock-type toll collecting system includes an on-board unit...
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6034625 |
Radio-communication vehicle identification system
A radio-communication vehicle identification apparatus includes first and second radio communication units, a directional finding unit, a vehicle classification unit, and a vehicle identification...
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6025784 |
Vehicles, license plate frame assemblies, methods of forming license plate frames, and methods of attaching RFIDs, transponders and modulators to vehicles
The invention encompasses license plate frame assemblies having modulators, transponders or radio frequency identification devices (RFIDs) incorporated therein. Further, the invention encompasses...
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6025789 |
Train proximity detector
Disclosed is a train proximity detector for detecting an RF carrier transmitted by a train, for a predefined period of time. Further, the encoded FSK data is decoded to determine if a match with a...
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6020815 |
Utility right-of-way safety monitor
A system (18 ) for warning workers in the vicinity of a transportation pathway (10 ), such as a railroad track, of the presence of an oncoming vehicle, includes a detector/transmitter assembly (20...
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6016109 |
Mobile unit support system
A mobile unit support system comprises at least one magnetic member for forming a magnetic field in said vicinity of a movement path of a mobile unit which is made of a dielectromagnetic material;...
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6014447 |
Passive vehicle classification using low frequency electro-magnetic emanations
A system for passively sensing low frequency (5 Hz to 50 kHz) EM emanations from vehicles and classifying them on that basis. A temporal frequency response is computed for the sensed EM emanations....
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6008741 |
Intersection information supply apparatus
An intersection information supply apparatus includes a table indicating relationships between approaching directions of a vehicle to an intersection and signal forms, an approaching direction...
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6005475 |
Communication method and apparatus for conveyor carriages
A communication system for a plurality of carriages that travel along a rail. A power cable extends along the rail. The cable is used to convey electric current that drives the movable bodies and...
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6002346 |
Vehicle positioning apparatus
A vehicle positioning apparatus (10) includes a sensor (34), light source (32) and adjustment mechanism (30). The light source (32) projects a light beam (192) toward a vehicle (196) when the...
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5986577 |
Method of determining car position
A system and method for determining the position of each railroad vehicle within a train consist. The train consist includes a locomotive, at least one trainline and at least one railroad vehicle....
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5974397 |
Method and device for radio communication between mutually movable objects
A method for radio communication between mutually mobile objects. Prior to radio communication between the objects, calculations are preformed with a communication and calculation unit of a first...
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5969642 |
Airfield lighting system
A microprocessor-controlled airfield lighting control and monitoring system having bi-directional communication between the controlling microprocessor and the airfield lights and/or sensors. The...
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5969643 |
Method and apparatus for determining relative locomotive position in a train consist
A method and apparatus for determining the position of one or more locomotives in a train consist is disclosed. A receiver is mounted to each locomotive in a train consist. The receiver receives a...
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5963149 |
Movable body communication system
A response unit located on a vehicle performs transmission operations for transmitting signals including a pilot response signal responsive to receipt of a pilot signal from a fixed transceiver....
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5962833 |
Vehicle-mounted apparatus for road-to-vehicle communications and road-to-vehicle communication system
A road-to-vehicle communication system capable of avoiding an increase in the size of each of vehicle-mounted apparatuses and easily confirming the contents of data stored in each vehicle-mounted...
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5955970 |
On-board electronic device for use in electronic toll collection system
In a toll gate system in which the toll is automatically and electronically collected through wireless communication between an on-board electronic device and a stationary electronic device...
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5948038 |
Traffic violation processing system
A traffic violation processing method is disclosed, which includes the steps of monitoring a vehicle; determining whether the vehicle is in violation of a traffic violation and recording the image...
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5942993 |
Lane change detecting system for mobile bodies and mobile body detecting device employed in such system
A lane change detecting system includes an emission unit for emitting a predetermined signal, the emission unit being provided in a boundary between lanes of a road so that the predetermined signal...
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5936551 |
Vehicle detector with improved reference tracking
A vehicle detector with improved reference tracking routines in both the Call direction and the No Call direction. Call direction tracking includes rate sensitive tracking in which the reference is...
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5933096 |
Non-stop automatic toll collection system
In a non-stop automatic toll collection system for exchanging information by radio between a vehicle-mounted device mounted on a vehicle and a toll station, the toll station side comprises two...
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5929787 |
Vibration actuated traffic light control system
A device for controlling a traffic light, where the controlling of the traffic light is dependent upon receipt and recognition of vibrations. The device includes a vibration receiver for detecting...
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5926115 |
Airfield series circuit communications lighting system and method
A microprocessor-controlled airfield series lighting circuit communications system and method allows bi-directional communication between the controlling microprocessor and the airfield lamps. The...
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5917432 |
Intelligent intersections
A traffic intersection control system or intelligent intersection that analyzes in real time existing traffic flow at intersections to determine whether turn lanes need to be added, lengthened, or...
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5912634 |
Traffic monitoring device and method
A traffic monitoring device comprising a picture recording unit, a traffic dectection zone determination unit and a picture analysis unit, the traffic detection zone determination unit of which...
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5889477 |
Process and system for ascertaining traffic conditions using stationary data collection devices
A process and apparatus for determining traffic conditions using stationary data collection devices that are installed in a road network. The data collection devices collect data about traffic...
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5889478 |
Fault tolerant apparatus for detecting the passage of a moving body
On the moving body, the apparatus comprises an active transponder, and on the track it comprises a passive responder. The transponder has an LF transmitter and an MF transmitter which, during...
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5886648 |
Automated vehicle wash system with vehicle type recognition
An automated car wash system includes a device for recognizing the types of vehicles passing through the system. The vehicle type recognition device includes two ultrasonic sensors positioned above...
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5883587 |
Vehicle position recognition apparatus
A vehicle position recognition apparatus comprising one or a plurality of magnetic field formation means 1-1 installed at predetermined positions on a road for forming a predetermined magnetic...
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5884212 |
Process for monitoring traffic for automatic vehicle incident detection
A process for monitoring traffic for automatic vehicle incident detection using radar waves to detect the vehicles, their instantaneous speed and their distance. The process consists in correlating...
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5883585 |
On-road object detecting system
A system for detecting an object located on a travelling path even in bad weather or during nighttime in which conducting wires having a predetermined impedance value are laid along a travelling...
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5880682 |
Traffic control system and method of operation
A vehicle detector comprising a flux gate magnetometer with vertical and horizontal sensing coils is positioned within a roadway. The ambient levels of the earth's magnetic field as sensed by the...
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5877706 |
Ferromagnetic object detector
The apparatus is a detector for ferromagnetic objects using a small passive coil to sense disturbances in the earth's magnetic field when an object moves near the coil. The circuit uses a...
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5877969 |
System and method for preventing auto thefts from parking areas
A method and system to prevent auto theft from parking areas, such as airport parking lots, includes a ticket dispenser, at an entry gate, which issues a numbered ticket to each driver. The driver...
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5877705 |
Method and apparatus for analyzing traffic and a sensor therefor
A detector for detecting a characteristic and a speed of a vehicle includes a first magnetic field sensor. The first magnetic field sensor includes a magnetically variable resistor that changes...
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5872525 |
Toll collection system
A radio communication system is provided at an entrance gate of traffic facilities for radio communicating with a communication device carried by a vehicle. The system includes a first...
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5864306 |
Detection regions for transponder tracking
Data transmissions between a transponder and a reader of a toll collection system are minimized while the transponder moves through a communication zone of the system. A plurality of dimensionally...
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5857152 |
Electronic toll payment
A system for toll payment by electronic cash identifies an electronic purse and effects value transfer over a communication system without stopping the mobile (vehicle or person). Mobile identity...
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5850192 |
Apparatus for sensing vehicles
An underground vehicle sensing system extends below a vehicle travel surface to detect the presence of a vehicle. A conduit extends substantially horizontally underground from an access hole placed...
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5844502 |
Temperature-compensated object sensing device and method therefor
A device and method is provided for sensing an object or vehicle in proximity to a sensing zone, wherein the device is exposed to an environment temperature. The object sensing device comprises a...
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5839085 |
System and method for detecting vehicle types by utilizing information of vehicle height, and debiting system utilizing this system and method
A system and a method for detecting vehicle types utilizing height information and a debiting system using such a system or a method. A plurality of distance sensors (heads) are provided laterally...
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5829913 |
Bollard cap
A bollard or safety post cap for closing an open end of a vertical member of the bollard. The cap includes a anchor member extending downwardly from the cap to be embedded in the concrete which...
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5828320 |
Vehicle overheight detector device and method
A dual-beam photoelectric switch and method adapted for detecting overheight vehicles that emits and detects red light along an optical axis, and emits and detects infrared light along a parallel...
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5821879 |
Vehicle axle detector for roadways
A system for monitoring traffic flow on multi-laned roadways. The system includes a plurality of radiation sources such as light emitting diodes, LEDs and a corresponding set of radiation detectors...
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5808562 |
Vehicle detector for installation on the surface of a multi-lane road
A vehicle detector for installation on the surface of a multi-lane road, comprising at least a coaxial detector cable provided with a central conductor, a metallic cladding and a filler material...
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5790052 |
Method for determining the position of a vehicle on a road
According to the present invention, a method is proposed for determining the position of a vehicle, in which the vehicle performs a data transmission in the short-range field of at least one...
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