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Driving
Active Blind Spot Assist -
ABSA (optional, with ACC
only)
ABSA system is only available on
vehicles equipped with ACC system
and represents an addition to the
BSA previously described (see chapter
"Blind Spot Assist - BSA" of this
section).
ABSA adds to the BSA the possibility in
certain circumstances to avoid and or
mitigate side collisions with vehicles
proceeding in the adjacent lanes by
changing the car trajectory in order
to try to keep it inside the detected/
5
estimated lane. A steering wheel
vibration is used as further feedback to
warn the driver that the lane change is
not safe.
The main logic core is the front radar,
whereas the sense inputs are the
radars on the rear bumper fascia
used for sensing the presence of
vehicle in the blind spot areas and
the forward facing camera placed
behind the internal rear-view mirror
that instead is used for lane detection
and estimation.
ABSA is designed to help the driver
to avoid mitigate a collision. Torque
and vibration application is however
306
available in the 60 - 180 km/h (37 -
112 mph) speed interval. All the speed
thresholds related to the BSA remain
still valid, since ABSA as mentioned is
BSA extension.
ABSA is intended as a "hands-on"
function meaning that the driver
is required to stay engaged in the
driving all the time with his/her hands
on the steering wheel, in case hands
are not on the steering wheel for a
certain time there cannot be any
steering torque application vibration
included.
System Availability
ABSA is designed for an attentive
driver therefore the system is available
only when his/her hands are on the
steering wheel or with hands off for a
very limited amount of time. When the
system is enabled, it will trigger cluster
warning in case at least one hand is
not detected on the steering wheel.
The torque application as well as the
vibration are suppressed/inhibited
in case of: high driver torque in
the steering wheel, high lateral
acceleration, trailer connected to the
proper control module, hands not on
the steering wheel detected for more
than a certain time.
Highly dynamic behaviours, driving
on the lane boundary, off course will
prevent the function from working.
FCW braking and stability system
interventions (ESC, ABS) will also
prevent the system from operating.
Changing lane results in system
inhibition for a certain time.
In addition the road must respect
some characteristics such as minimum-
maximum width, lane clearly defined
by two lane boundaries and only in
limited case for a limited time at least
one.
NOTE:
• In case of wet road or raining
conditions the function could be
disabled by the system in order to
minimize the risks.
• With lane boundaries it is mainly
referred to painted lines delimiters,
nevertheless the system in good
conditions might properly recognise
as valid lane boundaries also other
types (for example road edges, curbs,
etc..).
Speed Range of Use
Speed
km/h (mph)
Minimum
60 (37)
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