Volvo V90 TWIN ENGINE Owner's Manual page 355

Subfunctions for City Safety
69
Function overview .
Acoustic warning signal in the event of a risk
of collision
Warning signal in the event of a risk of colli-
sion
Distance measurement with the camera and
radar unit
City Safety carries out three steps in the follow-
ing order:
1. Collision warning
2. Brake support
3. Auto Brake
The following text explains what happens during
the three steps:
69 NOTE: The illustration is schematic - details may vary depending on car model.
NOTE: The illustration is schematic - details may vary depending on car model.
70
1 - Collision warning
The driver is first warned of a potentially immi-
nent collision.
In cars equipped with a head up display*, the
warning is shown on the windscreen by a flashing
symbol.
Symbol for collision warning on the windscreen
NOTE
Strong sunlight, reflections, extreme light con-
trasts, the use of sunglasses, or if the driver is
not looking straight ahead may make the vis-
ual warning signal in the windscreen difficult
to recognise.
City Safety can detect pedestrians, cyclists or
vehicles that are stationary or moving in the same
direction as the car and are ahead. City Safety
can also detect pedestrians, cyclists or large ani-
mals that are crossing the road in front of the car.
In the event of a risk of collision with a pedes-
trian, larger animal, cyclist or vehicle (including
vehicles described in the "City Safety in cross
traffic" section), the driver's attention is alerted by
means of a visual, acoustic and brake pulse warn-
ing. There is no brake pulse warning at lower
speeds, sudden driver braking or acceleration.
The brake pulse frequency varies according to
the car's speed.
2 - Brake support
If the risk of collision has increased further after
the collision warning then the brake support is
activated.
70 Brake support reinforces the driver's braking
.
action if the system considers that the braking is
not sufficient to avoid a collision.
DRIVER SUPPORT
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353
* Option/accessory.