04 Comfort and driving pleasure
Driver Alert System – DAC*
04
190
*
Option/accessory, for more information, see Introduction.
General information on Driver Alert
System
The Driver Alert System is intended to assist
drivers whose driving ability is deteriorating or
who are inadvertently leaving the lane they are
driving on.
The Driver Alert System consists of two differ-
ent functions, which can either be switched on
at the same time or individually:
•
Driver Alert Control (DAC)
•
Lane Departure Warning (LDW), see
page 193.
A switched-on function is set in standby mode
and is not activated automatically until speed
exceeds 65 km/h.
The function is deactivated again when speed
decreases to below 60 km/h.
Both functions use a camera which is depend-
ent on the lane having side markings painted
on each side.
WARNING
The Driver Alert System does not work in all
situations but is instead only intended to be
of supplementary assistance.
The driver always has ultimate responsibility
that the car is driven safely.
General information on Driver Alert
Control - DAC
The function is intended to attract the driver's
attention when he/she starts to drive less con-
sistently, e.g. if he/she becomes distracted or
starts to fall asleep.
A camera detects the side markings painted on
the carriageway and compares the section of
the road with the driver's steering wheel move-
ments. The driver is alerted if the vehicle does
not follow the carriageway evenly.
NOTE
The camera sensor has certain limitations,
see page 187.
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.
In some cases driving ability is not affected
despite driver fatigue. In which case there may
not be any warning issued for the driver. For
this reason it is always important to stop and
take a break in the event of any signs of driver
fatigue, irrespective of whether or not DAC
issues a warning.
NOTE
The function must not be used to extend a
driving stint. Always plan breaks at regular
intervals and ensure that you are fully
rested.
Limitation
In some cases the system may issue a warning
despite driving ability not deteriorating, for
example:
•
if the driver tests the LDW function.
•
in strong side winds.
•
on rutted road surfaces.
Summary of Contents for V70 SPORT
Page 1: ...VOLVO V70 XC70 Owners Manual Web Edition ...
Page 2: ......
Page 7: ...Table of contents 7 09 09 Alphabetical Index Alphabetical Index 318 ...
Page 13: ...Introduction Volvo and the environment 13 ...
Page 15: ...SAFETY ...
Page 41: ...01 Safety 01 41 ...
Page 43: ...LOCKS AND ALARM ...
Page 65: ...YOUR DRIVING ENVIRONMENT ...
Page 68: ...03 Your driving environment Instruments and controls 03 68 Right hand drive ...
Page 91: ...03 Your driving environment Lighting 03 91 Templates for halogen headlamps G021155 ...
Page 129: ...COMFORT AND DRIVING PLEASURE ...
Page 215: ...DURING YOUR JOURNEY ...
Page 239: ...05 During your journey 05 239 ...
Page 241: ...WHEELS AND TYRES ...
Page 255: ...MAINTENANCE AND SERVICE ...
Page 275: ...07 Maintenance and service Fuses 07 275 Engine compartment ...
Page 287: ...07 Maintenance and service 07 287 ...
Page 289: ...SPECIFICATIONS ...
Page 290: ...08 Specifications Type designations 08 290 Label location ...
Page 329: ......
Page 330: ...Kdakd 8Vg 8dgedgVi dc IE c a h 6I Eg ciZY c HlZYZc iZWdg 8deng i Kdakd 8Vg 8dgedgVi dc ...