Lexus Outlines Advanced Active Safety Technologies for All-new 'LS'
2017年6月26日 - 3:30PM
JCN Newswire (英)
The all-new Lexus "LS" sedan scheduled for sales launch this
autumn aims to provide world-leading safety performance through the
combination of two advanced Lexus safety systems--Lexus Safety
System + and Lexus Safety System + A. Lexus today outlined the
features of these systems, which are ultimately aimed at the
elimination of traffic casualties.
While the fifth-generation of the Lexus LS(1) carries on the
tradition of a smooth and powerful ride and exceptional quietness
and comfort that started with the launch of the first generation as
a new standard for luxury cars, its GA-L platform gives it driving
that is both elegant and profound, offering the driver the thrill
of as-you-command control. As a symbol of Lexus, the fully
redesigned LS achieves a bold transformation through the adoption
of new styling and advanced technologies within an innovative
coupe-like silhouette, while affording ample interior spaciousness
befitting a luxury sedan.
As a flagship that pioneers a new age, the LS boasts extensive
application of advanced safety technologies. Specifically, the
already well-established active safety package Lexus Safety System
+, which is based on the Integrated Safety Management Concept(2),
has been combined with Lexus Safety System + A, which provides
advanced pre-collision support and sophisticated driving
assistance, in Japan, North America and Europe. The LS will also
come with other technologies for supporting safer and more-secure
driving in a broad range of situations. Support has been designed
to be clear and intuitive, such as by providing the driver with
information ranging from support status notifications to
information on vehicle behavior during safety feature operation via
a large head-up display (HUD) and a multi-information display.
Lexus Safety System + A advanced active safety package
Added to improvements in the various features of Lexus Safety
System +, which packages the Pre-Collision System (PCS), Lane
Departure Alert (LDA) and Dynamic Radar Cruise Control, is Active
Steering Assist, which, as a world-first technology(3), helps
prevent collisions that cannot be avoided through automatic braking
alone, and Front Cross Traffic Alert (FCTA), which is designed to
warn the driver of the possibility of head-on collisions at
intersections. These features, along with Lexus CoDrive, which
assists the driver in maintaining in-lane driving or in changing
lanes, and others achieve a high level of driving safety
support.
New advanced active safety technologies
PCS (with Pedestrian Alert and Active Steering Assist)
In addition to conventional PCS, which supports collision
prevention and damage reduction through alerts, Pre-collision Brake
Assist and Pre-collision Braking, the new LS is equipped with
Pedestrian Alert, a world-first technology(3) that specifies the
direction of the presence of a pedestrian, and Active Steering
Assist, which can automatically controls steering and braking. With
Pedestrian Alert, if there is the possibility of collision with a
pedestrian ahead, the direction of the pedestrian's presence is
shown in an animation via the LS's large color HUD, contributing to
intuitive recognition on the part of the driver. Active Steering
Assist determines when there is a high possibility of collision
with a pedestrian in the lane of travel or with a continuous
structure, such as a guardrail, and if the system also determines
that it is difficult to avoid a collision with brake control alone
but that it might be avoided with steering control, the system
assists in collision prevention or damage reduction through
automatic steering control in addition to activating an alert and
applying the brakes.
Lexus CoDrive, advanced driving assist technology that can lead to
automated driving
Lexus CoDrive adds Lane Change Assist (LCA) to the basic functions
of Dynamic Radar Cruise Control and Lane Tracing Assist (LTA) to
provide steering support that is in line with the intentions of the
driver and lane-changing support on highways or motor-vehicle-only
roadways. By providing seamless driving support on roads with many
curves or in traffic jams, Lexus CoDrive largely decreases driver
burden. It coordinates with the LS's large HUD and
multi-information display to clearly notify the driver of the state
of support provided.
Lane Tracing Assist (LTA)
Lane Tracing Assist provides lane-keeping support by way of
steering control when Adaptive Cruise Control is in operation. In
addition to lane line detection by way of a camera, tracing of the
path of the vehicle ahead enables assistance even when lane lines
cannot be recognized, such as in low-speed driving in congestion
when there is little distance to the preceding vehicle. If the
speed of entering a curve is found, based on navigation data, to be
too fast, the driver is alerted by way of the LS's HUD and
multi-information display, and the vehicle is automatically slowed
down.
Lane Change Assist (LCA)
LCA, which uses driver manipulation of the turning signal as a cue
to activate, supports lane changes by monitoring the surrounding
road environment and, at the appropriate timing, controls steering,
as well as acceleration and deceleration.
Driver Emergency Stop Assist (coordinated with LTA)
If non-operation by the driver continues during use of LTA on a
motor-vehicle-only roadway, Driver Emergency Stop Assist supports
the driver through audio and visual alerts and gentle deceleration.
It then activates the vehicle's hazard lamps and horn to alert
those outside the vehicle to help prevent or reduce damages to the
vehicle or to others, while slowing and eventually stopping the
vehicle within its lane. After stopping, it unlocks doors and
activates an automatic HELPNET connection for a rescue request,
contributing to early driver rescue.
Two-stage Adaptive High-beam System (AHS)
With eight LED lights at the top and 16 below (on each side), the
Two-stage Adaptive High-beam System provides optimal lighting by
way of separate on/off control of each row of LEDs, enabling finer
control of light strength and distance compared to the existing
LED-based AHS. This allows higher frequency of high-beam driving
without blinding preceding or oncoming vehicles, thus improving
nighttime visibility.
Front Cross Traffic Alert (FCTA)
To help prevent collisions at intersections, FCTA is meant to
detect forward cross-traffic vehicles. It uses forward direction
radar and is the first in the world*3 to alert drivers of the
direction from which a cross-traffic vehicle is approaching the
immediate intersection. Alerts are displayed using the LS's large
HUD. If the vehicle proceeds regardless of the presence of an
approaching vehicle in cross traffic, warnings are also issued by a
buzzer and the LS's multi-information display.
Road Sign Assist (RSA)
RSA acquires road sign information using a camera and navigation
maps and then displays such using the LS's HUD and
multi-information display, thus reducing driver failure to
recognize signs and encouraging safe driving.
Further evolution of performance of Lexus Safety System +
technologies
Lexus has further evolved the performance of PCS, LDA and Dynamic
Radar Cruise Control in the active safety Lexus Safety System +,
which has been featured in a growing number of vehicle models and
has been combined with Lexus Safety System + A in the LS.
Pre-Collision System (PCS)
PCS detects pedestrians and vehicles ahead using millimeter-wave
radar and a stereo camera and supports collision prevention and
damage mitigation with an alert, Pre-collision Brake Assist and
Pre-collision Braking. The improved PCS can detect bicyclists and
nighttime pedestrians and has improved deceleration performance
during automatic braking. For example, it can decelerate the
vehicle by as much as 60 km/hour when a pedestrian is detected,
thus improving its collision-prevention performance.
Lane Departure Alert (LDA)
LDA helps to prevent lane departures. In addition to detecting road
lane lines, it is now also capable of detecting the boundaries
between asphalt and such elements as grass, dirt and curbstone
through advances in recognition capability. Thus, it can now
perform its functions of alerting the driver and operating the
steering wheel even on roads that do not have lines.
Dynamic Radar Cruise Control
Outstanding basic recognition performance has been secured with
wide-angle detection using newly developed millimeter-wave radar
and a camera with a wider forward recognition range. Dynamic Radar
Cruise Control also provides support for making driving more
comfortable, with smooth acceleration at startup, and during
following, departure and acceleration, for a sense of security for
occupants, and smooth deceleration in the case of a rapid change in
deceleration speed during following.
Other active safety technologies
Parking support brakes (stationary objects, vehicles approaching in
the rear, pedestrians in the rear)
With the aim of reducing damage from accidents when parking, during
which moving vehicles and pedestrians, in addition to walls and
other stationary objects, perimeter checks and complicated driving
operations are considerations, low-speed braking support systems
have been integrated into a single package. Added to the already
commercialized Intelligent Clearance Sonar (ICS) and Rear Cross
Traffic Auto Brake (RCTAB) is the world's first(3) rear pedestrian
support brake, which detects pedestrians using a rear camera, and
in the case of a possible collision, helps to minimizes damages by
using alerts and brake control.
Panoramic View Monitor (with side clearance view and cornering view
functions)
Side clearance view and cornering view functions have been added to
the Panoramic View Monitor, which supports periphery safety checks.
Side clearance view produces an image on the LS's 12.3-inch display
monitor of the area in front of the car as if it were seen from an
elevated point at the rear of the car, allowing the driver to
more-intuitively confirm the space on the sides of the vehicle when
passing by another vehicle on a narrow road or when moving toward
the shoulder of the road to allow passage. When side clearance view
is in operation, cornering view automatically produces an image of
the vehicle as viewed from the rear at an angle in line with
driving operation during cornering. These assist in confirming
safety when making left or right turns on narrow roads and in
preventing the driving up onto curbstones when departing the
roadway.
Digital Rear-View Mirror
The Digital Rear-View Mirror, which shows the image captured by a
rear camera on a built-in display in the rear-view mirror, was
developed as a driving support device. In addition to making rear
safety checks possible by producing an image without objects that
obstruct the view, such as the heads of rear-seat passengers, etc.,
it contributes to enhancing visibility at night and in rainy
weather, as well as when the rear-window sunshade is in use, and to
protecting the privacy of rear-seat passengers.
Also, operation of a lever switches the display between optical
mirror mode and digital mirror mode.
(1) Introduced to the Japanese market in its fourth generation (in
2006)
(2) An approach that, rather than considering a vehicle's
individual safety technologies and systems independently, aims for
coordination in the pursuit of an even higher dimension of driver
support in all driving situations
(3) As known as of June 2017 (based on a Lexus survey)
About LEXUS
Since its debut in 1989, Lexus has earned a worldwide reputation
for high-quality products and exemplary customer service. Lexus is
the hybrid leader among luxury brands, offering hybrids that
provide the best in innovative technology and premier luxury. The
evolution of Lexus is reflected in the progressive designs of its
new vehicles. The grille, dynamic light treatments, and sculptured
lines create a distinctive look of luxury for Lexus. For more
information, please visit www.lexus-int.com and
www.lexus-int.com/news/.
Source: LEXUS
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