Polestar 2 2020, Manual

Page: 310 / 568

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 of the function to detect slowly
deteriorating 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).
Driver Alert Control reads the position of the car
in the lane.
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.
The car is being driven erratically in the lane.
If driving behaviour becomes
noticeably inconsistent, the
driver is alerted by this symbol
in the driver display, combined
with an acoustic signal and the
text message Time for a break
Driver Alert . The warning is
repeated after a time if driving behaviour has not
improved.
Related information
• Driving support systems (p. 242)
• Activating and deactivating Driver Alert
Control (p. 311)
• Limitations of Driver Alert Control (p. 312)
WARNING
• Driver Alert Control should not be used
to extend a period of driving. The driver
should instead plan for breaks at regu-
lar intervals and make sure they are
well rested.
310 Driver support