IP Library Granted Patent US 12,731,491
Granted Patent B2
US 12,731,491 · App. 18/508,910 · Granted Sep 8, 2026

Systems and methods for communication between infrastructure, vehicles, and user devices

Inventors: Oliver Lei (Windsor, CA); Mahmoud Yousef Ghannam (Canton, MI); Somak Datta Gupta (Novi, MI)
G08G1/166G06V20/52G06V40/10G08G1/164G06V2201/08
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Quick Facts
Patent No.
US 12,731,491
App. No.
18/508,910
Granted
Sep 8, 2026
Kind
B2
Abstract

A trail crossing system is disclosed. The system may include a detection unit and a processor. The detection unit may be configured to detect a presence of a vehicle and a person in proximity to an intersection point on a road network. The processor may be configured to obtain inputs from the detection unit. Responsive to obtaining the inputs, the processor may be configured to determine that a predetermined condition is met. The predetermined condition may be met when a distance between the vehicle and the intersection point and a distance between the person and the intersection point are less than respective threshold values. The processor may be further configured to output a notification to at least one of a user device associated with the person and the vehicle responsive to a determination that the predetermined condition is met.

Claims (31)

1 . A system comprising:

a fixed detection unit configured to concurrently detect a presence of a vehicle and a person in proximity to an intersection point on a road network, the fixed detection unit located at the intersection point; and

a processor communicatively coupled to the detection unit, wherein the processor is configured to:

obtain inputs from the fixed detection unit;

determine that a predetermined condition is met based on the inputs, wherein the predetermined condition is met when a first distance between the vehicle and the intersection point is less than a first predefined threshold value and a second distance between the person and the intersection point is less than a second predefined threshold value, wherein the first predefined threshold value is larger than the second predefined threshold value; and

output a notification to at least one of a user device associated with the person and the vehicle responsive to a determination that the predetermined condition is met.

2 . The system of claim 1 , wherein the processor outputs the notification by outputting an audio signal to the user device.

3 . The system of claim 1 , wherein the processor outputs the notification to the vehicle by outputting a visual signal or an audio signal to a vehicle Human-Machine Interface (HMI).

4 . The system of claim 1 , wherein the processor is further configured to output a first visual signal to the person via a first signboard disposed at the intersection point, and wherein the first signboard is disposed at a position that faces the person.

5 . The system of claim 4 , wherein the processor is further configured to output a second visual signal to the vehicle via a second signboard disposed at the intersection point, and wherein the second signboard is disposed at a position that faces the vehicle.

6 . The system of claim 5 , wherein the processor outputs the first visual signal and the second visual signal by activating lights associated with the first signboard and the second signboard in a predetermined pattern.

7 . The system of claim 1 , wherein the detection unit is disposed in proximity to the intersection point on the road network, and wherein the detection unit is stationary at the intersection point.

8 . The system of claim 1 , wherein the detection unit comprises a camera.

9 . A method comprising:

obtaining, by a processor, inputs from a fixed detection unit, wherein the detection unit is configured to concurrently detect a presence of a vehicle and a person in proximity to an intersection point on a road network and wherein the fixed detection unit is located at the intersection point;

determining, by the processor, that a predetermined condition is met based on the inputs, wherein the predetermined condition is met when a first distance between the vehicle and the intersection point is less than a first predefined threshold value and a second distance between the person and the intersection point is less than a second predefined threshold value, wherein the first predefined threshold value is different than the second predefined threshold value; and

outputting, by the processor, a notification to at least one of a user device associated with the person and the vehicle responsive to a determination that the predetermined condition is met.

10 . The method of claim 9 , wherein outputting the notification to the user device comprises outputting an audio signal to the user device.

11 . The method of claim 9 , wherein outputting the notification to the vehicle comprises outputting a visual signal or an audio signal to a vehicle Human-Machine Interface (HMI).

12 . The method of claim 9 , wherein outputting the notification further comprises outputting a first visual signal to the person via a first signboard disposed at the intersection point, and wherein the first signboard is disposed at a position that faces the person.

13 . The method of claim 12 , wherein outputting the notification further comprises outputting a second visual signal to the vehicle via a second signboard disposed at the intersection point, and wherein the second signboard is disposed at a position that faces the vehicle.

14 . The method of claim 13 , wherein outputting the first visual signal and the second visual signal comprises activating lights associated with the first signboard and the second signboard in a predetermined pattern.

15 . A non-transitory computer-readable storage medium having instructions stored thereupon which, when executed by a processor, cause the processor to:

obtain inputs from a fixed detection unit, wherein the fixed detection unit is configured to concurrently detect a presence of a vehicle and a person in proximity to an intersection point on a road network and wherein the fixed detection unit is located at the intersection point;

determine that a predetermined condition is met based on the inputs, wherein the predetermined condition is met when a first distance between the vehicle and the intersection point is less than a first predefined threshold value and a second distance between the person and the intersection point is less than a second predefined threshold value, wherein the second predefined threshold value is smaller than the first predefined threshold value; and

output a notification to at least one of a user device associated with the person and the vehicle responsive to a determination that the predetermined condition is met.

16 . The non-transitory computer-readable storage medium of claim 15 , wherein outputting the notification to the user device comprises outputting an audio signal to the user device.

17 . The non-transitory computer-readable storage medium of claim 15 , wherein outputting the notification to the vehicle comprises outputting a visual signal or an audio signal to a vehicle Human-Machine Interface (HMI).

18 . The non-transitory computer-readable storage medium of claim 15 , wherein outputting the notification further comprises outputting a first visual signal to the person via a first signboard disposed at the intersection point, and wherein the first signboard is disposed at a position that faces the person.

19 . The non-transitory computer-readable storage medium of claim 18 , wherein outputting the notification further comprises outputting a second visual signal to the vehicle via a second signboard disposed at the intersection point, and wherein the second signboard is disposed at a position that faces the vehicle.

20 . The non-transitory computer-readable storage medium of claim 19 , wherein outputting the first visual signal and the second visual signal comprises activating lights associated with the first signboard and the second signboard in a predetermined pattern.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 15, 2023
From: LEI, OLIVER; GHANNAM, MAHMOUD YOUSEF; DATTA GUPTA, SOMAK
To: FORD GLOBAL TECHNOLOGIES, LLC
Reel/Frame 065571/0857 →
Continuity (1)
Related Publication 20250157336A1 · May 15, 2025
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