System and method for a virtual approach signal

Patent metadata

Field	Value
Publication number	US-12589784-B2
Application number	US-202318160713-A
Country	US
Kind code	B2
Filing date	Jan 27, 2023
Priority date	Jan 27, 2023
Publication date	Mar 31, 2026
Grant date	Mar 31, 2026

Abstract

A system and method for providing virtual approach signaling between physical signaling components. The system and method can generate virtual approach signal indicators to increase an efficiency along a segment of track. The system can provide a signal for the locomotive to increase the speed at which the locomotive can travel along the segment of track based on the virtual approach signal indicators, rather than physical signal components. The system can provide enhanced safety along the segment of track by automating the virtual approach signal indicators for the locomotive. The system and method can provide a reduced cost through the efficiency gains along the railway by upgrading the virtual approach signal to an all-clear indication removing any speed restrictions previously binding the locomotive. The system and method can provide a modular signaling ability to enhance a capacity along the segment of track.

First claim

What is claimed is:

1 . A method for providing virtual approach signaling between physical signaling components, comprising:
receiving a positive train control (PTC) advancement signal corresponding to a signal location; splitting a segment of railroad track into two or more sections using at least one virtual approach signal indicator; displaying the at least one virtual approach signal indicator on a PTC locomotive onboard display, the at least one virtual approach signal indicator being displayed on the PTC locomotive onboard display at a location that corresponds to a location along the segment of railroad track that is devoid of any physical signaling component; determining whether the PTC advancement signal indicates a first advancement indicator or a second advancement indicator; generating the at least one virtual approach signal indicator including a first locomotive approach type, when the PTC advancement signal indicates the first advancement indicator; generating the at least one virtual approach signal indicator including a second locomotive approach type, when the PTC advancement signal indicates the second advancement indicator; receiving an updated PTC advancement signal corresponding to a railway event of the signal location, wherein the railway event includes a broken rail, an occupied track, an unoccupied track, or a hand-throw switch; and updating the at least one virtual approach signal indicator in response to receiving the updated PTC advancement signal; wherein a visual appearance of the at least one virtual approach signal indicator is actively controlled in real time based on the updated PTC advancement signal, the visual appearance indicating various statuses of a next segment of track.

2 . The method of claim 1 , wherein the first advancement indicator includes a red signal indicator or a flashing red signal indicator.

3 . The method of claim 1 , wherein the second advancement indicator includes a yellow signal indicator, a flashing yellow signal indicator, or a green signal indicator.

4 . The method of claim 1 , wherein the first locomotive approach type includes a reduced-speed indicator.

5 . The method of claim 1 , wherein the second locomotive approach type includes an open track indicator.

6 . The method of claim 1 , further comprising upgrading the at least one virtual approach signal indicator from the first locomotive approach type to the second locomotive approach type when the PTC advancement signal changes from the first advancement indicator to the second advancement indicator.

7 . The method of claim 1 , further comprising downgrading the at least one virtual approach signal indicator from the second locomotive approach type to the first locomotive approach type when the PTC advancement signal changes from the second advancement indicator to the first advancement indicator.

8 . The method of claim 1 , wherein the at least one virtual approach signal indicator corresponds to a mapping file.

9 . The method of claim 1 , further comprising locating the virtual approach signal between the physical signaling components based on geolocation data.

10 . A wayside system for providing virtual approach signaling between physical signaling components, comprising:
a positive train control (PTC) onboard computer; and a processor configured to perform the steps of:
receiving a PTC advancement signal corresponding to a signal location;
splitting a segment of railroad track into two or more sections using at least one virtual approach signal indicator;
displaying the at least one virtual approach signal indicator on a PTC locomotive onboard display, the at least one virtual approach signal indicator being displayed on the PTC locomotive onboard display at a location that corresponds to a location along the segment of railroad track that is devoid of any physical signaling component;
determining whether the PTC advancement signal indicates a first advancement indicator or a second advancement indicator;
generating the at least one virtual approach signal indicator including a first locomotive approach type, when the PTC advancement signal indicates the first advancement indicator;
generating the at least one virtual approach signal indicator including a second locomotive approach type, when the PTC advancement signal indicates the second advancement indicator;
receiving an updated PTC advancement signal corresponding to a railway event of the signal location, wherein the railway event includes a broken rail, an occupied track, an unoccupied track, or a hand-throw switch; and
updating the at least one virtual approach signal indicator in response to receiving the updated PTC advancement signal;
wherein a visual appearance of the at least one virtual approach signal indicator is actively controlled in real time based on the updated PTC advancement signal, the visual appearance indicating various statuses of a next segment of track.

11 . The system of claim 10 , wherein the first advancement indicator includes a red signal indicator or a flashing red signal indicator.

12 . The system of claim 10 , wherein the second advancement indicator includes a yellow signal indicator, a flashing yellow signal indicator, or a green signal indicator.

13 . The system of claim 10 , wherein the first locomotive approach type includes a reduced-speed indicator.

14 . The system of claim 10 , wherein the second locomotive approach type includes an open track indicator.

15 . The system of claim 10 , wherein the processor is further configured to perform the step of upgrading the at least one virtual approach signal indicator from the first locomotive approach type to the second locomotive approach type when the PTC advancement signal changes from the first advancement indicator to the second advancement indicator.

16 . The system of claim 10 , wherein the processor is further configured to perform the step of downgrading the at least one virtual approach signal indicator from the second locomotive approach type to the first locomotive approach type when the PTC advancement signal changes from the second advancement indicator to the first advancement indicator.

17 . The system of claim 10 , wherein the virtual approach signal indicator corresponds to a mapping file.

18 . The system of claim 10 , further configured to locate the virtual approach signal indicator between the physical signaling components based on geolocation data.

19 . A computer-implemented method for providing virtual approach signaling between physical signaling components, the computer-implemented method comprising:
receiving a positive train control (PTC) advancement signal corresponding to a signal location; splitting a segment of railroad track into two or more sections using at least one virtual approach signal indicator; displaying the at least one virtual approach signal indicator on a PTC locomotive onboard display, the at least one virtual approach signal indicator being displayed on the PTC locomotive onboard display at a location that corresponds to a location along the segment of railroad track that is devoid of any physical signaling component; determining whether the PTC advancement signal indicates a first advancement indicator or a second advancement indicator; generating the at least one virtual approach signal indicator including a first locomotive approach type, when the PTC advancement signal indicates the first advancement indicator; generating the at least one virtual approach signal indi

Assignees

• Bnsf Railway Co

Inventors

• Sapp Scott D
• Beard Mitchell W
• Ramolt Michael E

Classifications

• B61L2205/00

  Communication or navigation systems for railway traffic · CPC title

• B61L27/00

  Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor · CPC title

• B60T13/665

  the systems being specially adapted for transferring two or more command signals, e.g. railway systems (B60T13/662 takes precedence) · CPC title

• B61L3/12

  using magnetic or electrostatic induction; using radio waves · CPC title

• B61L2205/04

  Satellite based navigation systems, e.g. global positioning system [GPS] · CPC title