Volvo 2016 XC 90 Owner's Manual page 330

DRIVER SUPPORT
Driving lane assistance
Lane Departure Warning
The
Keeping Aid
(LKA)* 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 systems: LDW
or LKA
There are two versions of the driving lane assis-
tance system:
•
Lane Departure Warning
LDW (
an audible signal or vibrations in the steering
wheel.
•
Lane Keeping Aid
LKA (
vehicle to help keep it in its traffic lane
and/or alerts the driver using an audible sig-
nal or through vibrations in the steering
wheel.
The driving lane assistance systems are active at
speeds from approx. 40 mph (65 km/h) up to the
vehicle's permitted top speed on roads with
clearly visible traffic lane marker lines.
On narrow roads, the systems may not function
and will go into standby mode. They will return to
active mode if the road becomes sufficiently
wide.
The level of vibrations varies; the longer the vehicle is over a lane marker line, the greater the number of vibrations:
6
328
Lane
(LDW) and
): provides
A camera monitors the road/traffic lane's marker lines
): actively steers the
Both LDW and LKA provide vibrations in the steering
6
wheel
LKA attempts to steer the vehicle back into its lane
Depending on the version and settings used,
driving lane assistance functions in different
ways:
•
If the system is activated (either LDW or
LKA): if the driver does not react and the
vehicle is moving out of its traffic lane, an
audible signal and/or vibrations in the steer-
ing wheel will be provided.
•
If the system is activated (LKA only): when
the vehicle approaches a traffic lane marker
line, LKA will provide active steering assis-
tance to help steer it back into the lane.
* Option/accessory, for more information, see Introduction.