07 Driver support
Driver Alert System
Driver Alert Control (DAC) –
introduction
NOTE
The Driver Alert System is designed to help a
driver who may be becoming fatigued or who
is inadvertently leaving the lane.
The camera has certain limitations, see
Adaptive Cruise Control – limitations
(p. 193).
DAC is intended to alert the driver if his/her
driving becomes erratic, such as if the driver
is distracted or fatigued.
Introduction
DAC is designed to help detect a slowly
changing driving pattern. It is primarily
intended to be used on main roads and is not
meant for use in city traffic.
The Driver Alert System consists of two differ-
ent functions that can be switched on
together or separately.
WARNING
DAC is not intended to extend the
duration of driving. Always plan breaks
at regular intervals to help remain alert.
•
Driver Alert Control (DAC), see Driver
Alert Control (DAC) – introduction
(p. 222)
•
A warning from DAC should not be
ignored. A driver may not be aware of
how fatigued he/she has become.
•
Lane Departure Warning (LDW), see
Lane Departure Warning (LDW) – intro-
duction (p. 227)
•
In certain cases, fatigue may not affect
•
the driver’s behavior. In situations of
this type, no warning will be provided.
Therefore, it is important to take
breaks at regular intervals, regardless
of whether or not DAC has given a
warning.
When one or both of the functions has been
switched on, it is in standby mode and is acti-
vated when the vehicle exceeds a speed of
40 mph (65 km/h).
The function deactivates if the vehicle's
speed goes under 37 mph (60 km/h).
Related information
•
Both functions use a camera that is depend-
ent on the road/lane being clearly marked by
painted lines on each side.
A camera monitors the painted lines marking
the lane in which the vehicle is traveling and
compares the direction of the road with the
driver’s movements of the steering wheel.
The driver is alerted if the vehicle does not
follow the lane smoothly.
Driver Alert Control (DAC) – function
(p. 223)
Driver Alert Control (DAC) – operation
(p. 223)
•
07
WARNING
Driver Alert Control (DAC) – limitations
(p. 224)
•
The Driver Alert System does not function
in all situations and is designed to be a
supplementary aid. It is not, however,
intended to replace the driver’s attention
and judgement.
Driver Alert Control (DAC) – symbols and
messages (p. 225)
•
222
English 
