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07 Driver support
07
230
* Option/accessory, for more information, see Introduction.
Collision warning system* - function
Function overview
18
.
Audio-visual warning signal in the event
of a collision risk.
Radar sensor
19
Camera sensor
Collision Warning with Auto Brake executes
three steps in the following order:
1.
Collision warning
2.
Brake support
19
3.
Auto Brake
19
The collision warning system and City
Safety™ (p. 222) complement each other.
1 - Collision warning
The driver is first warned of a potentially
imminent collision.
The collision warning system can detect
pedestrians, cyclists or vehicles that are sta-
tionary or moving in the same direction in
front of the driver's vehicle.
If there is a risk of collision with a pedestrian,
cyclist or a vehicle then the driver's attention
is attracted with a flashing red warning signal
(1) and an acoustic signal.
2 - Brake support
19
If the risk of collision has increased further
after the collision warning then the brake sup-
port is activated.
This means that the brake system is prepared
for rapid braking by applying the brakes
lightly, which may feel like a slight jolt.
If the brake pedal is depressed sufficiently
quickly then full brake function is imple-
mented.
Brake support also reinforces the driver's
braking if the system considers that the brak-
ing is not sufficient to avoid a collision.
3 - Auto Brake
19
The automatic brake function is activated
last.
If in this situation the driver has not yet
started to take evasive action and the risk of
collision is imminent then the automatic brak-
ing function is deployed - this takes place
irrespective of whether or not the driver
brakes. Braking then takes place with full
brake force in order to reduce collision speed,
or with limited brake force if it is sufficient to
avoid a collision. For cyclists, the warning and
full brake intervention may come very late or
simultaneously.
18
NOTE: The illustration is schematic - details may vary depending on car model.
19
With system Level 2 only.
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