Volvo XC90 Twin Engine (2020 year). Manual in english - page 23
DRIVER SUPPORT
}}
* Option/accessory.
395
Limitations of Driver Alert Control
The Driver Alert Control (DAC) function may
have limitations in certain situations.
In some cases the system may issue a warn-
ing despite driving ability not deteriorating, for
example:
•
in strong side winds
•
on rutted road surfaces.
WARNING
In some cases, driving behaviour is not
affected despite driver fatigue – e.g. when
using the Pilot Assist
*
function – resulting
in the driver not getting a warning from
DAC.
It is therefore important to always stop and
take a break at the slightest feeling of fati-
gue, regardless of whether the function has
given a warning.
This function uses the car's camera and
radar units, which have certain general lim-
itations.
Related information
•
•
Limitations for camera and radar unit
(p. 358)
Lane assistance
The function of the Lane Keeping Aid (LKA
107
)
is to help the driver to reduce the risk of the
car accidentally leaving its own lane on
motorways and similar major routes.
Lane Keeping Aid steers the car back into its
lane and/or alerts the driver with vibrations in
the steering wheel.
Lane Keeping Aid is active within the speed
range 65–200 km/h (40–125 mph) on roads
with clearly visible side lines.
On narrow roads the function may be unavail-
able, in which case it goes into standby mode.
The function becomes available again when
the road is wide enough.
A camera reads the side lines of the road/lane.
Lane assistance steers the car back into its lane.
Lane assistance warns with steering wheel vibra-
tions.
107
Lane Keeping Aid