Driver Alert Control - Volvo XC90 Owner's Manual

NOTE
The function uses the car's camera unit,
which has some general limitations, see the
"Limitations for camera unit" section.
Related information
•
Road Sign Information* (p. 375)
104 Road Sign Information
105 In cars equipped with Sensus Navigation.
Map data with speed information does not exist for all areas.
106

Driver Alert Control

The Driver Alert Control (DAC) function is
intended to help make the driver aware that he
or she is starting to drive less consistently, e.g. if
the driver 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 (40 mph) and remains active as long as
the speed is over 60 km/h (37 mph).
A camera detects the edge markings painted on
the carriageway and compares the alignment of
DRIVER SUPPORT
the road with the driver's steering wheel move-
ments.
When driving behaviour starts
to become inconsistent, the
driver is alerted by this symbol
in the driver display, together
with the text message
for a break soon?
If driving behaviour does not improve but
becomes noticeably inconsistent, the driver is
alerted by the same symbol in the driver display,
combined with an acoustic signal and the text
message Time to take a break
If the Rest Stop Guidance function is activated
in Sensus Navigation*, suggestions for a suitable
Time
.
.
}}
381
* Option/accessory.