Research Institute (TRI) introduced the TRI-P4 automated driving test vehicle
at CES 2019. The P4 is based on the all-new fifth-generation Lexus LS flagship
sedan and will be used in TRI's two-track Guardian and Chauffeur automated
driving system development.
Chauffeur development is focused on full autonomy, where the human is
essentially removed from the driving equation, either completely in all
environments, or within a restricted driving domain," said Ryan Eustice,
senior vice president of automated driving at TRI. "Guardian, on the other
hand, is being designed to amplify human performance behind the wheel, not
replace it. The introduction of the new P4 platform will help us accelerate the
development of both tracks when it joins our fleet this spring," he added.
P4 benefits from Lexus' new generation of chassis and steering control
technology, which provides greater agility and allows for more responsive and smoother
maneuvers during automated driving. P4 adds two additional cameras to improve
situational awareness on the sides and two new imaging sensors?one facing
forward and one pointed to the rear?specifically designed for autonomous
vehicles. The imaging sensors feature new chip technology with high dynamic
range. The radar system has been optimised to improve the field of view,
especially for close range detection around the vehicle perimeter. The LIDAR
sensing system with eight scanning heads carries over from the previous test
model, Platform 3.0, and morphs into the new vehicle design.
is a much smarter research vehicle than its predecessor. With greater computing
power, its systems can operate more machine learning algorithms in parallel for
faster learning. It can process sensor inputs faster and react more quickly to
the surrounding environment. All computing system power is now drawn from the
vehicle's hybrid battery with the 12v battery now serving only as a backup.
compute box in the trunk, which serves as the "brain" of the
automated driving system, has been reimagined. It is now tucked vertically
against the rear seat transom, folding down to access the circuitry. This frees
up the entire floor of the trunk for hauling cargo.
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