Volvo S 90, Owner'S Manual

Page: 332 / 548

DRIVER SUPPORT
330
Driver Alert Control limitations
Driver Alert Control (DAC) may in certain situa-
tions have limited or reduced functionality.
In certain situations, DAC may provide warnings
even if the driver’s driving pattern has not
become erratic:
•
in strong crosswinds
•
on grooved road surfaces.
NOTE
DAC uses the vehicle's camera, which has
certain general limitations. See the article
"Camera limitations" for additional informa-
tion.
Related information
•
Driver Alert Control (DAC) (p. 328)
•
Using Driver Alert Control (DAC) (p. 329)
•
Camera limitations (p. 303)
Driving lane assistance
The
Lane Assistance
functions are designed to
help reduce the risk of accidents in situations
where the vehicle unintentionally leaves its lane
on highways or other major roads.
Driving lane assistance system
Lane Keeping Aid (LKA) actively steers the vehi-
cle to help keep it in its traffic lane and/or alerts
the driver using an audible signal or through
vibrations in the steering wheel.
The driving lane assistance system are active at
speeds between approx. 40-125 mph
(65-200 km/h) on roads with clearly visible traf-
fic lane marker lines. Always observe posted
speed limits.
On narrow roads, the system may not function
and will go into standby mode. It will return to
active mode if the road becomes sufficiently
wide.
A camera monitors the road/traffic lane's marker lines.
Driving lane assistance attempts to steer the vehicle
back into its lane.