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250 Driving and parking
Press ±.
#
%
®
If you brake, deactivate ESP
or if ESP
venes, Active Distance Assist DISTRONIC is
deactivated.
▌Function of Active Speed Limit Assist
If a changed speed limit is detected and the auto-
matic adoption of speed limits is switched on, this
is automatically adopted as the stored speed
(
page 252). Speed limits below 12 mph
/
(20 km/h) are not adopted.
The vehicle's speed is adjusted when it is level
with the traffic sign at the latest. In the case of
signs indicating entry into an urban area, the
speed is adapted according to the speed permit-
ted within the urban area. The speed limit display
on the driver's display is always updated when the
vehicle is level with the traffic sign.
If you are driving on German highways and there
is no speed limit, the system uses the speed
stored for a stretch of road with no speed limit as
the set speed. If you do not alter the stored speed
on a stretch of road with no speed limit, the rec-
ommended speed of 80 mph (130 km/h) is adop-
ted.
If Active Distance Assist DISTRONIC has been put
into passive mode by pressing the accelerator
®
inter-
pedal, only speed limits which are higher than the
set speed are adopted.
The maximum permissible speed does not take
the road condition and current weather and traffic
conditions into account. Adjust your speed
accordingly, when necessary.
Observe the notes on driving systems and your
responsibility; you may otherwise fail to recognize
dangers (
page 233).
/
System limits
The system limits of Traffic Sign Assist apply to
the detection of traffic signs (
Speed limits below 12 mph (20 km/h) are not
automatically adopted by the system as the stored
speed. Temporary speed restrictions (e.g. for a
certain time or due to weather conditions) cannot
be properly detected by the system.
Adjust your speed in these situations.
& WARNING Risk of accident due to Active
Speed Limit Assist adapting the vehicle's
speed
The speed adopted by Active Speed Limit
Assist may be too high or incorrect in some
individual cases, such as:
at speed limits below 12 mph (20 km/h)
R
in wet conditions or in fog
R
when towing a trailer
R
Ensure that the driven speed complies
#
with traffic regulations.
Adjust the driving speed to suit current
#
page 266).
/
traffic and weather conditions.
▌Function of route-based speed adaptation
When Active Distance Assist DISTRONIC is activa-
ted, the vehicle speed will be adapted accordingly
to the route events ahead. Depending on the drive
program selected, the vehicle negotiates a route
event ahead in an energy-saving, comfortable or
dynamic manner. When the route event has been
passed, the vehicle accelerates again to the
stored speed. The set distance to the vehicle in
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