Transportation IP Holdings, LLC

Westinghouse Air Brake Technologies Corporation

Convergent Communications, Inc.

Francois P Pretorius

Jerrid D Chapman

Craig Karl Green

Jeffrey Donald Kernwein

Ann K Grimm

Rebecca W Dreasher

Lawrence Deloss Lowe, Iii

David L Hill

Charles A Wisniewski

James Allen Oswald

Derek Kevin Woo

Keith E Smith

Andrew Ryan Staats

Stuart John Barr

Matthew Vrba

Joseph W Gorman

Kendrick W Gawne

Phillip A Burgart

Janmejay Tripathy

Adam Charles Hausmann

Edward J Kuchar

Tania Lindsley

Scott Sollars

Shannon K Struttmann

Stephen Craven

James Lucas

Irwin Morris

A computer-implemented method is provided that includes obtaining a first secret and a first public key, and obtaining a second secret a second public key. The method may also include authenticating the first public key of the first vehicle based on a first private key associated with the first vehicle, and authenticating the second public key of the second vehicle based on a second private key associated with the second vehicle. The method may also include preventing a man-in-the-middle attack, by securing at least one of a first vehicle-to-central office communication, a central office-to-first vehicle communication, or a first vehicle-to-second vehicle, wherein the first vehicle-to-central office communication and the central office-to-first vehicle communication are authenticated based on a determined private key associated with a respective first vehicle on-board computer, and sending a message, with the central office server, to a vehicle associated with a conditional movement authority.

Secure vehicle to vehicle PTC communication

A system and a method for monitoring route devices in a transportation network includes one or more processors to receive sensed traffic control device information from first vehicle systems in a transportation network formed from interconnected routes. The sensed traffic control device information indicates states of traffic control devised at intersections between the routes in the transportation network. The one or more processors determine whether the sensed traffic control device information conflicts with stored traffic control device information stored in a database accessible by the one or more processors. The one or more processors send one or more bulletins to one or more second vehicle systems to change movement of the one or more second vehicle systems responsive to determining that the sensed traffic control device information conflicts with the stored traffic control device information.

System and method for monitoring traffic control devices

A control system includes a first vehicle controller configured to be disposed onboard a first vehicle system moving along route segments and to receive a conditional movement authority that has a condition to be met before the first vehicle system can travel into a designated route segment of the route segments. The first vehicle controller is configured to communicate with a separate, second vehicle system to determine a state of the second vehicle system. The first vehicle controller is configured to determine whether the state of the second vehicle system satisfies the condition of the conditional movement authority. The first vehicle controller also is configured to permit movement of the first vehicle system into the designated route segment responsive to determining that the state of the second vehicle system satisfies the condition of the conditional movement authority.

Control system for enforcing conditional authorities using vehicle-to-vehicle monitoring

A method and system for verifying trackside conditions in safety critical railroad applications by reporting the status of trackside signals and switches to a remote train control system. The system comprises at least one sensor for providing trackside conditions electrically connected to a circuit for providing trackside conditions to a railroad, said sensor being powered by voltage applied to the circuit such that the sensor is energized only when said electrical component is engaged. The system and method further comprises a method and system which is failsafe and which enables the control system to independently verify signals from each sensor.

Railroad signaling and communication system using a fail-safe voltage sensor to verify trackside conditions in safety-critical railroad applications

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Paonia, CO, United States of America

Francois P Pretorius