Driver Alert Control - Volvo XC 90 Owner's Manual

DRIVER SUPPORT

Driver Alert Control

The Driver Alert Control function is intended to
attract the driver's attention when he/she starts
to drive less consistently, e.g. if he/she becomes
distracted or starts to fall asleep.
The objective for DAC is to detect slowly deterio-
rating driving ability and it is primarily intended for
major roads. The function is not intended for city
traffic.
The function is activated when speed exceeds
65 km/h and remains active as long as the
speed is over 60 km/h.
A camera detects the edge markings painted on
the carriageway and compares the alignment of
the road with the driver's steering wheel move-
ments.
312
When the driving becomes
noticeably inconsistent the
driver is warned with an acous-
tic signal and the driver display
shows the Driver Alert Time
to take a break
together with a symbol.
The warning is repeated after a time if driving
ability does not improve.
NOTE
The function must not be used to extend a
period of driving. Always plan breaks at regu-
lar intervals, and make sure you are well
rested.
WARNING
An alarm should be taken very seriously, as a
sleepy driver is often not aware of his/her
own condition.
In the event of an alarm or a feeling of tired-
ness; stop the car in a safe manner as soon
as possible and rest.
Studies have shown that it is equally as dan-
gerous to drive while tired as it is under the
influence of alcohol.
WARNING
Driver Alert Control does not work in all situa-
tions but is designed merely as a supplemen-
tary aid.
The driver always bears ultimate responsibility
for ensuring that the vehicle is driven safely.
message
Related information
•
Activate/deactivate Driver Alert Control
(p. 313)
•
Limitations of Driver Alert Control (p. 313)