Vehicle steering modes
A system includes a computer including a processor and a memory storing instructions executable by the processor to determine a steering torque of a vehicle and to select one of a hands-on mode or a hands-free mode for operating the vehicle along a portion of the roadway based on comparing the steering torque to a steering torque threshold.
1 . A system comprising:
a computer including a processor and a memory storing instructions executable by the processor to:
determine a steering torque, a speed, and a lateral acceleration of a vehicle; and
select one of a hands-on mode or a hands-free mode for operating the vehicle along a portion of the roadway based on comparing the steering torque to a steering torque threshold, comparing the speed to a speed threshold, and comparing the lateral acceleration to a threshold lateral acceleration.
2 . The system of claim 1 , wherein the instructions further include instructions to select the hands-on mode at the portion of the roadway is further based on the lateral acceleration and the steering torque exceeding the threshold lateral acceleration and the steering torque threshold.
3 . The system of claim 1 , wherein the speed threshold includes an upper limit and wherein the instructions further include to, based on a determination that the speed is greater than the speed threshold, adjust the speed to be below the upper limit.
4 . The system of claim 1 , wherein the steering torque threshold is based on the lateral acceleration.
5 . The system of claim 1 , wherein the steering torque threshold is based on the speed of the vehicle.
6 . The system of claim 1 , wherein the selection is initiated based on approaching a curved portion of the roadway upcoming within a specified time from the curved portion.
7 . The system of claim 1 , wherein the selection of one of the hands-on mode or the hands-free mode is initiated based on the speed of the vehicle being greater than an upper limit.
8 . The system of claim 1 , wherein the instructions further include instructions to select one of the hands-on mode and the hands-free mode for operating the vehicle along a second portion of the roadway.
9 . A method comprising:
determining a steering torque, a speed, and a lateral acceleration of a vehicle; and
selecting one of a hands-on mode or a hands-free mode for operating the vehicle along a portion of the roadway based on comparing the steering torque to a steering torque threshold, comparing the speed to a speed threshold, and comparing the lateral acceleration to a threshold lateral acceleration.
10 . The method of claim 9 , wherein selecting the hands-on mode at the portion of the roadway is further based on the lateral acceleration and the steering torque exceeding the threshold lateral acceleration and the steering torque threshold.
11 . The method of claim 9 , wherein the speed threshold includes an upper limit and further comprising, based on a determination that the speed is greater than the speed threshold, adjusting the speed to be below the upper limit.
12 . The method of claim 9 , wherein the steering torque threshold is based on the lateral acceleration.
13 . The method of claim 9 , wherein the steering torque threshold is based on the speed of the vehicle.
14 . The method of claim 9 , wherein the selection is initiated based on approaching a curved portion of the roadway upcoming within a specified time from the curved portion.
15 . The method of claim 9 , wherein the selection of one of the hands-on mode or the hands-free mode is initiated based on the speed of the vehicle being greater than an upper limit.
16 . The method of claim 9 , further comprising selecting one of the hands-on mode and the hands-free mode for operating the vehicle along a second portion of the roadway.
17 . The system of claim 1 , wherein selection of the hands-on mode or hands-free mode is initiated based on approaching a curved portion of the roadway upcoming within a specified time from the curved portion.
18 . The system of claim 1 , wherein the selection of one of the hands-on mode or the hands-free mode is initiated based on a speed of the vehicle being greater than an upper limit.