Driver Alert Control - Volvo XC40 2019 Owner's Manual

DRIVER SUPPORT

Driver Alert Control

The Driver Alert Control (DAC) function is
designed to help alert the driver to erratic
behavior, e.g. if the driver is distracted or
showing signs of fatigue.
The objective of DAC is to detect slowly dete-
riorating driving behavior and is primarily
intended to be used on major roads. The func-
tion is not intended for use in city traffic.
DAC is activated when the vehicle's speed
exceeds 65 km/h (40 mph) and remains
active as long as speeds are above 60 km/h
(37 mph).
DAC detects the vehicle's position in the traffic lane.
A camera monitors the traffic lane's marker
lines and compares the direction of the road
with the driver's movements of the steering
wheel.
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The vehicle is moving erratically in the lane.
If driving behavior becomes
considerably erratic, the
driver will be alerted by this
symbol in the instrument
panel, an audible signal and
the message Time for a
break .
If the vehicle is equipped with Sensus
Navigation* and the Rest Stop Guidance
function is activated, suggestions will also be
provided for suitable places to take a break.
The warning will be repeated after a short time
if driving behavior does not improve.
WARNING
Driver Alert Control must not be used to
extend a period of driving. The driver
should plan in breaks at regular intervals
and make sure they are well rested.
WARNING
An alarm from Driver Alert Control should
be taken very seriously since a sleepy driver
is often not aware of their own condition.
If the alarm sounds or you feel fatigued:
Stop the vehicle safely as soon as pos-
•
sible and rest.
Studies have shown that it is just as dan-
gerous to drive while tired as it is to drive
under the influence of alcohol or other
stimulants.
* Option/accessory.