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Observe the notes on driving systems and your
responsibility; you may otherwise fail to recog‐
nise dangers (
page 192).
/
System limits
The system limits of Traffic Sign Assist apply to
the detection of traffic signs (
/
Speed limits below 20 km/h are not automati‐
cally 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. The maximum
permissible speed applying to a vehicle with a
trailer is not detected by the system.
Adjust the 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 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 224).
#
traffic and weather conditions.
Function of route-based speed adaptation
When Active Distance Assist DISTRONIC is acti‐
vated, the vehicle speed will be adapted accord‐
ingly to the route events ahead. Depending on
the drive program selected, the vehicle negoti‐
ates a route event ahead in a fuel-saving, com‐
fortable 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 front, vehicles detected ahead and
speed restrictions ahead are taken into account.
Route-based speed adaptation can be activated
in the multimedia system (
The following route events are taken into
account:
Bends
R
Roundabouts
R
T-junctions
R
Turns and exits
R
Traffic jams ahead (only with Live Traffic )
R
Also, the speed is reduced if the turn signal indi‐
cator is switched on and one of the following sit‐
uations is detected:
Turning off at junctions
R
Driving on slowing-down lanes
R
Driving on lanes adjacent to slowing-down
R
lanes
The driver is responsible for choosing the right
speed and observing other road users. This
applies in particular to junctions, roundabouts
and traffic lights, as route-based speed adapta‐
tion does not brake the vehicle to a standstill.
If a corresponding route event is detected while
route guidance is active, the first speed adjust‐
page 210).
/
ment is carried out automatically. If the turn sig‐
nal indicator is switched on, the selected route is
confirmed and further speed adjustment is acti‐
vated.
Driving and parking 209
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