Following Distance Indication; Active Emergency Braking - Opel ASTRA Owner's Manual

In the following cases, forward
collision alert may not detect a vehicle
ahead or sensor performance is
limited:
● on winding roads
● when weather limits visibility,
such as fog, rain, or snow
● when the sensor is blocked by
snow, ice, slush, mud, dirt,
windscreen damage or affected
by foreign items, e.g. stickers
Following distance
indication
The following distance indication
displays the distance to a preceding
moving vehicle. The front camera in
the windscreen is used to detect the
distance of a vehicle directly ahead in
the vehicle's path. It is active at
speeds above 40 km/h.
When a preceding vehicle is detected
ahead, the distance is indicated in
seconds, displayed on a page in the
Driver Information Centre.
On Midlevel display, choose Info
Menu ? via MENU on the turn
signal lever and turn the adjuster
wheel to choose following distance
indication page,3 114
On Uplevel display, select Info menu
via steering wheel buttons and press
o to select following distance
indication 3 114.
The minimum indicated distance is
0.5 seconds.
If there is no vehicle ahead or the
vehicle ahead is out of range, two
dashes will be displayed: -.- sec.
Driving and operating

Active emergency braking

Active emergency braking can help to
reduce the damage and injury from
crashes with vehicles and obstacles
directly ahead, when a collision can
no longer be avoided either by
manual braking or by steering. Before
the active emergency braking
applies, the driver is warned by the
forward collision alert 3 183.
The feature uses various inputs (e.g.
camera sensor, brake pressure,
vehicle speed) to calculate the
probability of a frontal collision.
Active emergency braking operates
above walking speed up to 85 km/h.
A precondition is that the system is
not deactivated by toggling the gap
switch V to Off setting, 3 183.
The system includes:
● brake preparation system
● emergency automatic braking
● forward looking brake assist
185