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7357359 |
Electronic code follower relay
An electronic code following relay for use in a railroad signaling system includes a timing circuit for receiving an input square wave signal coded at a pre-determined code rate, and regenerating...
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6666411 |
Communications-based vehicle control system and method
A vehicle control system and method in which a plurality of beacon tags are disposed along a length of a track for a predetermine number of blocks. The beacon tags each provide information...
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6633784 |
Configuration of a remote data collection and communication system
A method and apparatus for modifying configuration information used to control an on-board monitor located aboard a locomotive. Under the control of a remote monitoring and diagnostic center, the...
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6592081 |
Electronic code generating circuit for use in railroad signaling systems
An electronic code transmitter is disclosed for driving a number of code following relays of a railroad signaling system. The electronic code transmitter comprises a timing circuit and a driving...
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6539292 |
Using location-influenced behavior to control model railroads
New methods and techniques are presented for utilizing digital information transmitted by a moving device (such as a model locomotive on a model railroad) to allow the moving device to itself...
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5950966 |
Distributed positive train control system
A system for controlling train movement uses a distributed architecture. Wayside controllers receive signals from individual trains, including position information derived from a navigation system....
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5947423 |
Vehicle control system
A vehicle control system issues control signals to vehicles to control their movements along a route between a first location and a second location, the vehicles comprising a set of vehicles of a...
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5823481 |
Method of transferring control of a railway vehicle in a communication based signaling system
A method is provided for transferring control of a railway vehicle from a controlling wayside controller that controls a first zone within which the railway vehicle was previously positioned, to an...
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5785283 |
System and method for communicating operational status of a railway wayside to a locomotive cab
A system and method of communicating via digital radio between a train and a device positioned at the wayside of a railway system, wherein the device detects defects at the wayside and information...
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5533695 |
Incremental train control system
A train control system employs a series of wayside control units spaced along the track, each of which has responsibility for the control of trains in a corresponding local area and monitors track...
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5474267 |
Method and device for a smooth and timely deceleration or stop in automatic train control
A method and device for effecting a fast but smooth deceleration or stopping of trains controlled under the automatic train control (ATC) system. Under ATC, a permitted maximum velocity is provided...
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5398894 |
Virtual block control system for railway vehicle
A virtual block system is provided in which a section of track is represented by a zone having a plurality of virtual track circuits. Communication between wayside and the vehicle is established...
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5263669 |
Railway cab signal transmitter
A transmitter for transmitting cab signal and track signal currents to a pair of rails includes the circuitry for mitigating runby currents which are not fully shunted by the rail vehicle. High...
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4495578 |
Microprocessor based over/under speed governor
A vehicle carried profile generator generates a speed profile to control a vehicle governor at the transition from a higher to lower speed limit. The speed profile is calculated and checked to...
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3892377 |
Train detection and control system
Control apparatus carried on each train traveling on a nonconducting right-of-way is coupled across a signal transmission channel comprising one propulsion conductor and a sectionalized signal...
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3879004 |
Vehicle detection, signaling and communication system
A vehicle detection, signaling and communication system which employs a single sectionalized conductor for all three purposes. Vehicles are detected and located through the use of vehicle detection...
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3079496 |
Supplemental signalling system for special railway track equipment
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