Volvo S90 2019 Owner's Manual page 335

The vehicle is parked very far into a parking space.
In a diagonal parking space, CTA may be completely
"blind" on one side of your vehicle.
CTA's blind zone.
CTA's field of vision.
However, as you back your vehicle slowly out
of a parking space, CTA's field of vision
changes in relation to the obstructing vehicle/
object and its blind zone is reduced.
Examples of further limitations
The auto brake sub-function only detects
•
vehicles in motion and may therefore not
"see" and brake for e.g. stationary obsta-
cles, a cyclists or a pedestrian.
Dirt, ice and snow covering the sensors
•
may reduce functionality and prevent the
system from providing warnings.
NOTE
The function uses the vehicle's camera and
radar sensor, which has certain general
limitations.
Related information
Cross Traffic Alert* (p. 331)
•
Camera/radar sensor limitations (p. 307)
•
DRIVER SUPPORT
333
* Option/accessory.