Mercedes-Benz GLC Series Operator's Manual page 189

Observe the notes on driving systems and your
responsibility; you may otherwise fail to recog‐
nize dangers ( page 171).
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System limits
The system limits of Traffic Sign Assist apply to
the detection of traffic signs ( page 199).
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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. The
maximum permissible speed applying to a vehi‐
cle 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 12 mph (20 km/h)
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in wet conditions or in fog
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when towing a trailer
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Ensure that the driven speed complies
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with traffic regulations.
Adjust the driving speed to suit current
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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 an economical, 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.
You can activate and deactivate route-based
speed adaptation in the multimedia system
( page 188).
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Driving and parking 187
The following route events are taken into
account:
Curves
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T-intersections, roundabouts and toll plazas
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Turns and exits
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Traffic jams ahead (only with Live Traffic
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Information )
% When the toll station is reached, Active Dis‐
tance Assist DISTRONIC adopts the speed as
the stored speed.
Also, the speed is reduced if the turn signal indi‐
cator to change lanes is switched on and one of
the following situations is detected:
Turning off at intersections
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Driving on slowing-down lanes
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Driving on lanes adjacent to slowing-down
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lanes
The driver is responsible for choosing the right
speed and observing other road users. This
applies in particular to intersections, round‐
abouts and traffic lights, as route-based speed