Mercedes-Benz A-Class 2020 Operator's Manual page 177

The driven speed is adjusted when the vehicle 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
permitted within the urban area. The speed limit
display in the Instrument Display is always upda‐
ted when the vehicle is level with the traffic sign.
If there is no speed restriction on an unlimited
stretch of road (e.g. on a freeway), the recom‐
mended speed is automatically adopted as the
stored speed. The system uses the speed stored
on an unlimited stretch of road as the recom‐
mended speed. If you do not alter the stored
speed on an unlimited stretch of road, the rec‐
ommended speed is 80 mph (130 km/h).
If Active Distance Assist DISTRONIC has been
put into passive mode by pressing the accelera‐
tor pedal, only speed limits which are higher
than the set speed are adopted.
Active Speed Limit Assist is only an aid. The
driver is responsible for keeping a safe distance
to the vehicle in front, for vehicle speed and for
braking in good time. The maximum permissible
speed also depends on factors such as the road
surface and traffic conditions.
System limits
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. In these sit‐
uations you must adjust your speed yourself.
& 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:
In the wet 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
#
traffic and weather conditions.
Driving and parking 175
Active Steering Assist
Function of Active Steering Assist
% The following function is country-dependent
and only available in conjunction with the
Driving Assistance Package.
Active Steering Assist is only available up to a
speed of 130 mph (210 km/h). The system helps
you to stay in the center of the lane by means of
moderate steering interventions. Depending on
the speed driven, Active Steering Assist uses the
vehicles ahead and lane markings as a refer‐
ence.
% Depending on the country, in the lower
speed range Active Steering Assist can use
the surrounding traffic as a reference. If nec‐
essary, Active Steering Assist can then also
provide assistance when driving outside the
center of the lane.
When the system is actively steering, the à
symbol is shown in green in the multifunction
display.
If the detection of lane markings and vehicles
ahead is impaired, Active Steering Assist
switches to passive mode. The system provides