Automated driving system with integrated hands-on and hands-off modes
An automated driving system integrates hands-on and hands-off operational modes for vehicles. The system receives a request from a driver to enable the automated driving system, determines the availability of an adaptive cruise control system, and activates the adaptive cruise control system if available. The system monitors the vehicle's location to determine if the vehicle is on a mapped road. If the vehicle is on a mapped road, the system displays an indication to the driver and operates in a hands-off mode. If the vehicle is not on a mapped road, the system displays an indication to the driver and operates in a hands-on mode. The system also monitors the driver's hand position on the steering wheel and provides feedback accordingly. Additionally, the system includes features for monitoring driver attentiveness and transitioning between operational modes based on road conditions and sensor data.
1 . A method for operating an automated driving system of a vehicle, the method comprising:
receiving a request from a driver of the vehicle to enable the automated driving system;
based on a determination that an adaptive cruise control system is available, activating the adaptive cruise control system;
based on a determination that the vehicle is located on a mapped road using high-definition map data for geofenced roads and that the adaptive cruise control system is active, displaying an indication to the driver of a transition to a hands-off operating mode of the automated driving system and operating the automated driving system in the hands-off operating mode; and
based on a determination that the vehicle is not located on a mapped road and that the adaptive cruise control system is active, displaying an indication to the driver of a transition to a hands-on operating mode of the automated driving system and operating the automated driving system in the hands-on operating mode,
wherein in the hands-on operating mode the automated driving system provides assistance with lane centering and speed regulation while monitoring a steering wheel touch sensor to detect whether one or more hands of the driver are disposed on a steering wheel.
2 . The method of claim 1 , further comprising placing the automated driving system in a standby mode and displaying indication of standby mode to the driver based on a determination that the adaptive cruise control system is not available.
3 . The method of claim 1 , further comprising monitoring a position of one or more hands of the driver while in the hands-off operating mode and based on detecting that the one or more hands of the driver are disposed on a steering wheel, providing a message to the driver that it is safe for the driver to operate the vehicle in a hands-off manner.
4 . The method of claim 1 , further comprising monitoring a position of one or more hands of the driver while in the hands-off operating mode and based on detecting that the one or more hands of the driver are disposed on a steering wheel, vibrating the steering wheel.
5 . The method of claim 1 , further comprising monitoring the location of the vehicle while in the hands-on operating mode and based on a determination that the vehicle has transitioned to a mapped road, as determined using high-definition map data for geofenced roads, displaying the indication to the driver of the transition to the hands-off operating mode of the automated driving system and operating the automated driving system in the hands-off operating mode.
6 . The method of claim 1 , further comprising monitoring the location of the vehicle while in the hands-off operating mode and based on a determination that the vehicle has transitioned to an unmapped road, as determined using high-definition map data for geofenced roads, displaying the indication to the driver of the transition to the hands-on operating mode of the automated driving system and operating the automated driving system in the hands-on operating mode.
7 . The method of claim 6 , wherein the indication to the driver of the transition from the hands-off operating mode to the hands-on operating mode includes displaying a red icon of a steering wheel with hands disposed on the steering wheel.
8 . The method of claim 1 , wherein the indication to the driver of the transition to the hands-off operating mode includes displaying an icon of a steering wheel without hands disposed on the steering wheel.
9 . The method of claim 1 , wherein the indication to the driver of the transition to the hands-on operating mode includes displaying an icon of a steering wheel with hands disposed on the steering wheel.
10 . The method of claim 1 , further comprising displaying to the driver of the vehicle an icon that indicates the operating mode of the automated driving system.
11 . The method of claim 1 , further comprising quantifying customer understanding of a feature of the automated driving system based on a history of driver interactions with the feature by computing a feature understanding score, wherein the feature understanding score is determined by analyzing driver actions, response times, and a maximum level of autonomy utilized by the driver.
12 . The method of claim 11 , further comprising implementing an adaptive messaging strategy to improve an understating of the driver of the automated driving system, prevent mode confusion, and maximize feature usability, wherein the adaptive messaging strategy tailors messages based on the feature understanding score and historical interactions with the feature.
13 . The method of claim 1 , wherein the request from the driver of the vehicle to enable the automated driving system consists of a single button press that instructs the automated driving system to selectively enable one or more of the hands-on and hands-off operation modes.
14 . A vehicle comprising:
an automated driving controller, the automated driving controller being configured to:
receive a request from a driver of the vehicle to enable an automated driving system;
based on a determination that an adaptive cruise control system is available, activate the adaptive cruise control system;
based on a determination that the vehicle is located on a mapped road, using high-definition map data for geofenced roads and that the adaptive cruise control system is active, automatically upon the vehicle entering a geofenced mapped road segment, display an icon of a steering wheel without hands indicating a transition to a hands-off operating mode of the automated driving system and operate the automated driving system in the hands-off operating mode, and, in the hands-off operating mode, autonomously control lateral steering/trajectory and longitudinal speed/distance; and
based on a determination that the vehicle is not located on a mapped road and that the adaptive cruise control system is active, automatically upon the vehicle exiting the geofenced mapped road segment, display a red icon of a steering wheel with hands indicating a transition to a hands-on operating mode of the automated driving system and operate the automated driving system in the hands-on operating mode,
wherein in the hands-on operating mode the automated driving system provides assistance with lane centering and speed regulation while monitoring a steering wheel touch sensor to detect whether one or more hands of the driver are disposed on a steering wheel.
15 . The vehicle of claim 14 , wherein the automated driving controller is further configured to place the automated driving system in a standby mode and display indication of standby mode to the driver based on a determination that the adaptive cruise control system is not available.
16 . The vehicle of claim 14 , wherein the automated driving controller is further configured to monitor a position of one or more hands of the driver while in the hands-off operating mode and based on detecting that the one or more hands of the driver are disposed on a steering wheel, display a message to the driver that it is safe for the driver to operate the vehicle in a hands-off manner.
17 . The vehicle of claim 14 , wherein the automated driving controller is further configured to monitor a position of one or more hands of the driver while in the hands-off operating mode and based on detecting that the one or more hands of the driver are disposed on a steering wheel, vibrate the steering wheel.
18 . The vehicle of claim 14 , wherein the automated driving controller is further configured to monitor the location of the vehicle while in the hands-on operating mode and based on a determination that the vehicle has transitioned to a mapped road, display the indication to the driver of the transition to the hands-off operating mode of the automated driving system and operate the automated driving system in the hands-off operating mode.
19 . The vehicle of claim 14 , wherein the automated driving controller is further configured to monitor the location of the vehicle while in the hands-off operating mode and based on a determination that the vehicle has transitioned to an unmapped road, display the indication to the driver of the transition to the hands-on operating mode of the automated driving system and operate the automated driving system in the hands-on operating mode.
20 . A method for operating an automated driving system of a vehicle, the method comprising:
receiving a request from a driver of the vehicle to enable the automated driving system;
monitoring a location of the vehicle to determine whether the vehicle is on a mapped road or an unmapped road;
monitoring a state of an adaptive cruise control system of the vehicle, wherein determining whether the vehicle is on a mapped road uses high-definition map data for geofenced roads;
automatically upon the vehicle entering a geofenced mapped road segment and based on a determination that the adaptive cruise control system of the vehicle is active, operating the automated driving system in a hands-off operating mode in which the automated driving system autonomously controls lateral steering/trajectory and longitudinal speed/distance; and
automatically upon the vehicle exiting the geofenced mapped road segment and based on a determination that the adaptive cruise control system of the vehicle is active, operating the automated driving system in a hands-on operating mode,
wherein in the hands-on operating mode the automated driving system provides assistance with lane centering and speed regulation while monitoring a steering wheel touch sensor to detect whether one or more hands of the driver are disposed on a steering wheel;
responsive to a disengagement or unavailability of the adaptive cruise control system, placing the automated driving system in a standby mode, displaying an indication of standby mode, deactivating automated driving features, and upon reactivation of the adaptive cruise control system resuming an appropriate one of the hands-off operating mode and the hands-on operating mode based on whether the vehicle is on the mapped road or the unmapped road;
monitoring driver attentiveness while the automated driving system is in one of the hands-off operating mode and the hands-on operating mode and, if a level of attentiveness of the driver is less than a threshold level, displaying a request for the driver to take control of the vehicle, and if the level of attentiveness of the driver increases above the threshold level during a specified time period after displaying the request for the driver to take control of the vehicle, allowing the vehicle to continue operation in the one of the hands-off operating mode and the hands-on operating mode, and if the level of attentiveness of the driver does not increase above the threshold level during the specified time period after displaying the request for the driver to take control of the vehicle, disabling the automated driving system for the remainder of a key cycle of the vehicle; and
when the hands-off operating mode becomes unavailable, displaying a reason for unavailability and, responsive to a long press of a lane centering button, presenting HMI messages that detail causes of unavailability.