Volvo 2015 S60, Owner'S Manual

Page: 187 / 406

04 Driver support
Driver Alert System*
04
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*
Option/accessory, for more information, see Introduction.
185
Introduction
The Driver Alert System is designed to help a
driver who may be becoming fatigued or who
is inadvertently leaving the lane and consists
of two different functions that can be
switched on together or separately.
•
Driver Alert Control (DAC)
•
Lane Departure Warning (LDW) 1
, see
page 187
•
Lane Keeping Aid (LKA)
2
, see page 190
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).
Both functions use a camera that is depend-
ent on the road/lane being clearly marked by
painted lines on each side.
WARNING
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)
This function is intended to alert the driver if
his/her driving becomes erratic, such as if the
driver is distracted or fatigued.
NOTE
The camera has certain limitations, see
page 162.
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.
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.
WARNING
•
DAC is not intended to extend the
duration of driving. Always plan breaks
at regular intervals to help remain alert.
•
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.
Limitations
In certain situations, DAC may provide warn-
ings even if the driver’s driving pattern has
not become erratic.
•
if the driver is testing the LDW function,
see page 187
•
if the driver is testing the LKA function,
see page 190
•
in strong crosswinds
•
on grooved road surfaces.
1 Models with 5- or 6-cylinder engines only.
2 Models with 4-cylinder engines only.