Mercedes-Benz GLB Owner's Manual page 250

If a change in the speed limit is detected and
automatic adoption of speed limits is activated,
the new speed is automatically adopted as the
stored speed ( page 282).
/
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 motorway), 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 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
from the vehicle in front, for vehicle speed and
for braking in good time. The maximum permissi‐
ble 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
Driving and parking 247
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.
Function of route-based speed adaptation
% The following function is country-dependent
and only available in conjunction with the
Driving Assistance Package.