Road Sign Information* Limitations; Driver Alert Control - Volvo XC90 TWIN ENGINE 2018 Owner's Manual

Road Sign Information* limitations

78
Road Sign Information (RSI ) functionality may
be reduced in certain situations.
The function could have reduced functionality
due to e.g.:
• faded road signs
• signs located in a curve in the road
• twisted or damaged signs
• signs positioned high above the road
• fully/partially obstructed or poorly positioned
signs
• signs partially or fully covered by frost, snow
and/or dirt
79
digital road maps that are outdated, incor-
•
rect or do not contain speed information
NOTE
Certain types of bike carriers that are con-
nected to the trailer socket may be interpre-
ted as a connected trailer by the RSI function.
In such cases, the instrument panel may indi-
cate incorrect speed information.
78 Road Sign Information
79 Vehicles equipped with Sensus Navigation*.
Map data and speed information is not available for all areas.
80
NOTE
The function uses the vehicle's camera and
radar sensor, which has certain general limita-
tions.
Related information
•
Road Sign Information* (p. 344)
• Camera/radar sensor limitations (p. 316)
80
.
DRIVER SUPPORT

Driver Alert Control

The Driver Alert Control (DAC) function is
designed to help capture the driver become
aware of erratic behavior, e.g. if the driver is dis-
tracted or showing signs of fatigue.
The objective of DAC is to detect slowly deterio-
rating driving behavior and is primarily intended to
be used on major roads. The function is not
intended for use in city traffic.
DAC is activated when the vehicle's speed
exceeds 65 km/h (40 mph) and remains active
as long as speeds are above 60 km/h (37 mph).
DAC detects the vehicle's position in the traffic lane.
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349
* Option/accessory.