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GV80’s Newest ADAS Uses AI to Grasp Driver Habits

2020-04-17

The Genesis GV80 now comes with cutting-edge ADAS features like Smart Cruise Control(SCC) with driver tendency recognition and Highway Driving Assist(HDA)-II with auto lane changing function. We explore the evolution and utility of the ADAS technology applied to the GV80.

Seeking to provide premium convenience and safety to its owners, the Genesis GV80 is equipped with the most cutting-edge ADAS (Advanced Driver Assistance System) the industry can offer. Its Smart Cruise Control (SCC) now comes with driver tendency recognition based on machine learning, and its Highway Driving Assist (HDA) feature was revamped into HDA-II, which comes with new features like automatic lane changing, lane-edge driving, and active response to low-speed cut-ins. But in more exact terms, what has changed in the GV80’s ADAS, compared to that of the previous models? We explore in this article the cutting-edge ADAS offerings of the Genesis line’s new premium SUV

Smart Cruise Control Now Learns and Mimics the Driver’s Tendencies

Before we delve into e-LSDs, let us first establish why LSDs are necessary in the first place. Normally, the power put out by the engine is conveyed to the wheels via the transmission and drive axles. While the car is on a straight paved road, the rotation speeds of all wheels are equal; however, if there are obstacles on the way that disproportionately impact the wheels on either side—say, a water pool, sand, dirt, or potholes—the rotation speeds of the wheels will have to go out of sync to maintain directional stability.

Machine-learning based Smart Cruise Control (SCC-ML) can learn and mimic the driver’s driving habits.

SCC, in essence, is a function that maintains the speed and the following distance set by the driver (as opposed to maintaining just the vehicle speed, as in the case of normal cruise control). More recently, SCC has evolved into Navigation-based Smart Cruise Control (NSCC), which uses the data from the navigation to automatically match the changes in the speed limit or to adjust the speeds to smoothly enter and exit a curve. The GV80 is equipped with NSCC’s latest evolution NSCC-Ramp (NSCC-R), which can also smoothly enter and exit highway ramps without the need to disable cruise control.

Now added to this series of innovations is SCC-ML, the latest machine-learning-based Smart Cruise Control applied to the GV80 for the first time. This innovative new tech employs machine learning, the crux of the ongoing AI boom, to recognize the driver’s driving tendency and actively seeks to match it while in the cruise control mode.

To “learn” the driver’s core tendencies, SCC-ML uses sensory information from the forward-facing camera and radar as well as acceleration/deceleration data from the gas and the brake pedals. Once culled, these data are sent to the central ADAS controller, which filters through the data to identify the driver’s usual following distance, acceleration tendencies, and response rate. The identified tendencies serve as the foundation of the cruise control mode that is now tailored to the individual driver.

The GV80 uses AI to learn the driver’s usual following distance, acceleration, and response time.

SCC-ML does not merely distinguish lazy Sunday drivers from aggressive ones; its learning process is intricate enough to learn more complex habits, like keeping short following distances at low speeds and long following distances at high speeds. Indeed, the number of possible behavioral combinations offered by the GV80’s SCC-ML is approximately 10,000.

SCC-ML is the GV80’s default setting, but the driver can manually turn off the part of it that incorporates learned driver habits. This is done by short-pressing the following distance button on the steering wheel, which orders the SCC to get into the ‘drive mode association’ setting. This setting follows the current driving mode of the GV80 (comfort, eco, sports, smart, etc.) to adjust the SCC’s response rate in accordance. To turn on the machine learning feature again, the driver must long-press the same button, returning the SCC to its default mode. Alternatively, the driver can use the infotainment system: go to System Settings > Driver Assistance > Smart Cruise Control to find an interface that allows the selection of the desired SCC setting.

HDA-II is Now Smarter Too

GV80’s HDA-II combines ADAS functions like SCC and Lane Keeping Assist (LKA) to maximize driving convenience

Another big change to the GV80’s ADAS is HDA-II, the first of its kind applied to a Genesis model. While the vehicle is on a highway, HDA uses sensors to discern the lane marks and the following distance to the car ahead and uses this information to maintain the current stable driving status. To this end, HDA incorporates various ADAS features like SCC and Lane Keeping Assist (LKA). HDA-II is the revamped version of this dependable feature, offered exclusively within the brand to the GV80 drivers.

HDA-II’s core functions are no different from HDA’s—they both maintain the set speed, following distance, and postion at the center of the lane. But the response rate at which these tasks are executed has been dramatically reduced for HDA-II. HDA-II can now more quickly detect other cars cutting in while the vehicle is at low speeds; in other words, when it notices other cars entering the lane, HDA-II will automatically decelerate to quickly regain the desired following distance.

HDA-II also comes with a new feature called Lane-edge Driving: when a vehicle by the side drifts and comes too close, the feature activates and moves the vehicle to the opposite edge of the lane, keeping it there as long as the danger of collision exists.

Changing Lanes at Your Fingertips

The GV80’s HDA-II comes with the highway lane change assist function, which changes lanes automatically by responding to the driver’s activation of the turn signal.

HDA-II also comes with the newly added highway lane change assist function, which allows lane changes at the literal tip of one’s fingers. Under the old HDA, if the driver wished to change lanes while in cruise control mode, he or she had to first turn on the turn signal, check the surroundings with the mirrors, and then manually steer the wheel. HDA-II simplifies all this to a single action: just activate the turn signal, and the car will take care of the rest.

Of course, activating the turn signal does not always result in a lane change; safety is more important than convenience after all. The automatic lane change is executed only when the following conditions are met.

(1) The vehicle must be in such a condition that:
HDA-II is active (i.e. the vehicle is on a highway or expressway)
The vehicle speed is at or over 60 km/h
Both lanes by the side are safely detected
Dashboard warning lights are all turned off
The hands-off warning is turned off

(2) The road must NOT be:
An open road tolling section of a highway
A sharp curve
A two-lane highway
A road with unusually narrow lanes
A road open to pedestrians and/or cyclists
A road with intersections and/or pedestrian crossings

Once the conditions are met for an automatic lane change, the dashboard will display the green icon on the top right.
To use the highway lane change assist function, the driver must maneuver the turn signal switch within the B range portrayed in the figure.

To use the highway lane change assist function, the driver must maneuver the turn signal switch within the B range (portrayed in the graphic above) while the green dashboard symbol on the top right is turned on. Moving into the A range will not activate the function. Once the above conditions are met and the driver executes the function correctly, the dashboard symbol will blink, and the dashboard marker for the intended lane (next to the digitally represented car in the graphic below) will also turn green.

Once the turn switch is properly maneuvered, the green lane change assist icon will blink, and the lane marker will turn green as well.

If the driver intends to continue the lane change, he or she must hold the switch within the B range for at least one second. The system interprets this gesture as the authorization to execute the automatic lane change, and proceeds to display a turn signal arrow next to the lane marker.

When the system sees that it is safe to execute the automatic lane change, it will display the green arrow next to the lane marker to first notify the driver.

Once the arrow is displayed, the driver can safely put his hands off the turn switch without interrupting the automatic lane change. To interrupt, the driver must maneuver the switch to the A range, which will immediately deactivate the function. Releasing the switch before the green arrow is displayed, moving the switch in the opposite direction, or putting one’s hands off the steering wheel will also have the same effect of deactivating.

At this point, the system will undergo one final safety check before changing the lane. The following safety conditions must be met.

(3) The surroundings must be such that:
The destination lane is free from danger of collision
The destination lane is marked by a single dotted line (i.e. lane change is legal)
There are no warnings from the Forward and Rear-Side Collision Avoidance systems
The vehicle must currently be traveling at the center of the lane
The destination lane exists and is legal (i.e. moving left from the first lane, right from the last lane, and into the pocket lane is disallowed)

All these conditions may appear unnecessarily complex―but Genesis’s philosophy holds that safety is the priority. At any rate, a closer look at the conditions reveals that they reflect what amounts to a sensible, normal driving condition. In that sense, the automatic lane change function will be useful most of the time.

While HDA is active, the driver will be alarmed after fifteen seconds pass without his hands on the steering wheel

The same philosophy for safety is what’s behind the reduction of the allowed hands-off time—the duration in which the drivers can put their hands off without seeing or hearing alarms—for the GV80. The GV80’s HDA-II adheres to the government’s ADAS safety regulations ratified last December. According to these regulations, all vehicles for domestic sale are limited to the maximum 60 seconds of hands-off time. After 15 seconds, a visual warning must be displayed on the dashboard; after 30 seconds, an auditory alarm must be sounded in addition. If the driver fails to react within 60 seconds, an emergency alarm must be sounded and the function must be turned off, requiring the driver to resume manual steering.