Toyota is doubling-down on humans. That’s the answer to the question; What has the Toyota Research Institute (TRI) been doing in automated driving over the past 12 months? Using onboard cameras, sensors and 3D animation, TRI opened its portion of a press conference today at the annual CES show in Las Vegas with a vivid reenactment of a three-car crash on a California interstate, where no one was injured.
“We know what happened because we were there, in the thick of it,” said Dr. Gill Pratt, TRI CEO and Toyota Motor Corporation Fellow. “Our test vehicle was travelling at freeway speed in manual mode with its autonomy mode disabled as it gathered data at the many tunnels and bridges in the San Francisco bay area. As we downloaded data from the incident, we asked ourselves; Could this crash have been mitigated, or avoided altogether by a future Toyota Guardian automated safety system? We believe the answer is yes.”
From its beginning three years ago, TRI has been committed to a two-track development approach to automated driving. Its on-going Chauffeur development focuses on full autonomy, where the human is essentially removed from the driving equation, either completely in all environments, or within a restricted operational design domain (ODD). Toyota Guardian, on the other hand, is being developed to amplify human control of the vehicle, not replace it.
One of TRI’s most significant breakthroughs this year, was the creation of blended envelope control where Guardian combines and coordinates the skills and strengths of the human and the machine. The system was inspired and informed by the way that modern fighter jets are flown, where you have a pilot that flies the stick, but actually they don't fly the plane directly. Instead, their intent is translated by the low-level flight control system, thousands of times a second to stabilize the aircraft and stay within a specific safety envelope
This blended envelope control is much more difficult to create in a car than in a fighter jet. That is because the control envelope for a car is not only defined by vehicle dynamics, but also by the vehicle’s perception and prediction ability of all things in its immediate environment.
The big idea is that this control envelope is not a discrete on-off switch between the human and the autonomy. It's really a near-seamless blend of both, working as teammates to extract the best input from each.
Guardian is being developed as an automated safety system, capable of operating with either a human driver, or an autonomous driving system, provided by Toyota, or any other company. This is a key capability.
Pratt stressed the importance of not underestimating the difficulty of developing an autonomous Chauffeur system, both technologically and sociologically. Technically, how do we train a machine about the social ballet required to navigate through an ever-changing environment, as well as, or better than, a human driver? Sociologically, public acceptance of the inevitable crashes, injuries, and deaths that will occur due to fully autonomous Chauffeur systems may take considerable time.
TRI’s primary focus last year has been to concentrate most of its effort on making Toyota Guardian a smarter machine. For Guardian to learn and get smarter, it must be subjected to difficult and demanding driving scenarios, “corner cases” that are simply too dangerous to perform on public roads. On closed courses, Guardian’s intelligence and capabilities can be stretched and challenged. Through continuous refinement, Guardian learns how best to navigate and react to extremely dangerous scenarios, as they unfold.
This growing Guardian capability gives the three-car incident in California shown during the opening press conference sequence, an interesting lemons-to-lemonade twist. Here was an accidental corner case on a public highway; a dangerous crash that unfolded right before Guardian’s sensors and cameras.
From that data, TRI developed an accurate simulation which was then translated into a learning tool for the car to figure out its options in a split-second. The scenario was then re-created on the test track, using real vehicles and a guided, soft-target, dummy-vehicle. In this instance, Guardian’s best option was to quickly accelerate for daylight and away from encroaching vehicles.
The joy of driving is an inherent and deliberate component of Guardian. Hands-on-the-wheel and eyes-on-the-road is first-and-foremost about safety. But it is not ALL about safety. It is also about how a driver feels behind the wheel; safe and secure to enjoy the drive, instead of the ride.
And, it’s about the democratization of safety, a philosophy Toyota and Lexus pioneered nearly three years ago, when it began providing automatic emergency braking as standard equipment in nearly every model and trim level sold in the US.
#CES_2019 #Toyota #Guardian #Autonomous_Car
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