IP Library Granted Patent US 12,644,721
Granted Patent B2
US 12,644,721 · App. 18/192,762 · Granted Jun 2, 2026

Driver condition-based vehicle navigation

Inventors: Charan S. Lota (Frisco, TX); Steven S. Basra (Frisco, TX)
Assignees: TOYOTA MOTOR NORTH AMERICA, INC.; TOYOTA JIDOSHA KABUSHIKI KAISHA
G01C21/3484
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Quick Facts
Patent No.
US 12,644,721
App. No.
18/192,762
Granted
Jun 2, 2026
Kind
B2
Abstract

An example operation includes one or more of determining a stress level of an individual prior to occupying a vehicle, responsive to a destination of the vehicle being above a first threshold and the stress level being above a second threshold, determining a route for the vehicle, and providing the determined route on a device associated with the individual.

Claims (63)

1 . A method, comprising:

before an individual occupies a vehicle, determining a first stress level of the individual based on biometric data received from a device;

determining a plurality of routes to a destination;

calculating a destination stress level for each route from the plurality of routes based on respective attributes of the plurality of routes;

in response to the destination stress level exceeding a first threshold and the first stress level exceeding a second threshold, selecting a route from the plurality of routes based on the destination stress level of each route; and

transmitting the route to a processor of the vehicle to control the vehicle to maneuver to the destination.

2 . The method of claim 1 , wherein the determining the first stress level comprises:

reviewing biometric data and communications of the individual; and

assigning a value to a combination of the biometric data and the communications.

3 . The method of claim 1 , comprising:

measuring a second stress level of the individual after the individual occupies the vehicle;

calculating a difference between the first stress level and the second stress level; and

identifying a change to the route based on the difference.

4 . The method of claim 1 , further comprising:

determining a difference between an expected travel time of a fastest route to the destination and the route that was selected; and

in response to the difference being more than a historical delay associated with the individual, requesting approval from the individual to travel by the route that was selected.

5 . The method of claim 1 , comprising:

in response to determining that the destination stress level exceeds the first threshold, the first stress level exceeds the second threshold, and that a combination of the destination stress level and the first stress level exceeds a third threshold, requesting approval from the individual to travel to the destination at an alternate time.

6 . The method of claim 1 , comprising:

determining the first stress level is above a threshold; and

modifying a parameter of a cabin of the vehicle to reduce the first stress level below the threshold.

7 . The method of claim 1 , wherein the respective attributes of the plurality of routes comprises respective driving conditions of the plurality of routes.

8 . A system, comprising:

a processor that executes instructions stored in a memory to

configure the processor to:

before an individual occupies a vehicle, determine a first stress level of the individual based on biometric data received from a device;

determine a plurality of routes to a destination;

calculate a destination stress level for each route from the plurality of routes based on respective attributes of the plurality of routes;

in response to the destination stress level exceeding a first threshold and the first stress level exceeding a second threshold, select a route from the plurality of routes based on the destination stress level of each route; and

transmit the route to a processor of the vehicle to control the vehicle to maneuver to the destination.

9 . The system of claim 8 , wherein when the processor determines the first stress level, the processor is configured to:

review biometric data and communications of the individual; and

assign a value to a combination of the biometric data and the communications.

10 . The system of claim 8 , wherein the processor is configured to:

measure a second stress level of the individual after the individual occupies the vehicle;

calculate a difference between the first stress level and the second stress level; and

identify a change to the route based on the difference.

11 . The system of claim 8 , wherein the processor is configured to:

determine a difference between an expected travel time of a fastest route to the destination and the route that was selected; and

in response to the difference being more than a historical delay associated with the individual, request approval from the individual to travel by the route that was selected.

12 . The system of claim 8 , wherein the processor are configured to:

in response to a determination that the destination stress level exceeds the first threshold, the first stress level exceeds the second threshold, and that a combination of the destination stress level and the first stress level exceeds a third threshold, request approval from the individual to travel to the destination at an alternate time.

13 . The system of claim 8 , wherein the processor are configured to:

determine the first stress level is above a threshold; and

modify a parameter of a cabin of the vehicle to reduce the first stress level below the threshold.

14 . A computer-readable storage medium comprising instructions that, when executed by a processor, cause the processor to perform:

before an individual occupies a vehicle, determining a first stress level of the individual based on biometric data received from a device;

determining a plurality of routes to a destination;

calculating a destination stress level for each route from the plurality of routes based on respective attributes of the plurality of routes;

in response to the destination stress level exceeding a first threshold and the first stress level exceeding a second threshold, selecting a route from the plurality of routes based on the destination stress level of each route; and

transmitting the route to a processor of the vehicle to control the vehicle to maneuver to the destination.

15 . The computer-readable storage medium of claim 14 , wherein the determining the first stress level comprises:

reviewing biometric data and communications of the individual; and

assigning a value to a combination of the biometric data and the communications.

16 . The computer-readable storage medium of claim 14 , wherein the instructions cause the processor to perform:

measuring a second stress level of the individual after the individual occupies the vehicle;

calculating a difference between the first stress level and the second stress level; and

identifying a change to the route based on the difference.

17 . The computer-readable storage medium of claim 14 , wherein the instructions cause the processor to perform:

determining a difference between an expected travel time of a fastest route to the destination and the route that was selected; and

in response to the difference being more than a historical delay associated with the individual, requesting approval from the individual to travel by the route that was selected.

18 . The computer-readable storage medium of claim 14 , wherein the instructions cause the processor to perform:

in response to determining that the destination stress level exceeds the first threshold, the first stress level exceeds the second threshold, and that a combination of the destination stress level and the first stress level exceeds a third threshold, requesting approval from the individual to travel to the destination at an alternate time.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 30, 2023
From: LOTA, CHARAN S.; BASRA, STEVEN B.
To: TOYOTA MOTOR NORTH AMERICA, INC.; TOYOTA JIDOSHA KABUSHIKI KAISHA
Reel/Frame 063160/0311 →
Continuity (1)
Related Publication 20240328801A1 · Oct 3, 2024
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