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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 dete-
riorating 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).
DAC reads the position of the car in the lane.
A camera detects the edge markings painted
on the carriageway and compares the align-
ment of the road with the driver's steering
wheel movements.
The car is being driven erratically in the lane.
If driving behaviour becomes
noticeably inconsistent, the
driver is alerted by this sym-
bol in the driver display, com-
bined with an acoustic signal
and the text message
to take a break
.
If the car is equipped with Sensus Navigation*
and has the function
Rest Stop Guidance
activated, suggestions for an appropriate
place for a break are also displayed.
The warning is repeated after a time if driving
behaviour has not improved.
WARNING
Driver Alert Control should not be used to
extend a period of driving. The driver
should instead plan for breaks at regular
intervals and make sure they are well
rested.
WARNING
An alarm from Driver Alert Control should
be taken very seriously, as a sleepy driver is
often not aware of his/her own condition.
If the alarm sounds or you feel fatigued:
Stop the car safely as soon as possible
•
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.
Time
DRIVER SUPPORT
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* Option/accessory.
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