Distance Alert* Limitations - Volvo XC 90 Owner's Manual

DRIVER SUPPORT
||
One bar between the vehicles represents a time
interval of approximately 1 second; 5 bars is
approximately 3 seconds.
The same symbol appears if Adaptive Cruise
Control is activated.
NOTE
•
The greater the vehicles' speed, the
greater the distance between them for a
set time interval.
•
The set time interval is also used by
Adaptive Cruise Control and Pilot Assist*.
•
Only use time intervals permitted by local
traffic regulations.
WARNING
•
Only use a time interval that is suitable in
current traffic conditions.
•
A short time interval gives the driver lim-
ited reaction time if an unexpected situa-
tion occurs in traffic.
Related information
•
Distance Alert* (p. 278)
280

Distance Alert* limitations

Distance Alert uses the same radar sensor as
Adaptive Cruise Control* and has several limita-
tions.
WARNING
•
The radar sensor has a limited field of
vision. In some situations it may detect a
vehicle later than expected or not detect
other vehicles at all.
•
The radar sensor cannot cover all driving
situations and traffic, weather and road
conditions.
•
The driver is responsible for maintaining a
safe distance and speed and must inter-
vene if the various driver support systems
do not maintain a suitable speed or suita-
ble distance to the vehicle ahead.
•
Maintenance of radar sensor components
may only be performed by a trained and
qualified Volvo technician.
•
Strong sunlight, reflections from the road
surface, strong lighting contrasts or using
sunglasses may make the warning light in
the windshield difficult to see.
WARNING
•
Poor weather or winding roads can affect
the radar sensor's capacity to detect vehi-
cles ahead.
•
A vehicle's size (e.g., a motorcycle) can
also affect the radar sensor's capacity to
detect another vehicle. This may result in
the warning light illuminating at a shorter
distance than the one that has been set
or not illuminating at all.
•
High speeds may also result in the warn-
ing light illuminating at a shorter distance
than the one that has been set due to
limitations in the radar sensor's range.
For additional information, see also the article
"Radar sensor limitations."
Related information
•
Radar sensor limitations (p. 311)
•
Distance Alert* (p. 278)
* Option/accessory.