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Driving systems
192
of the windscreen. The data and general traffic
regulations stored in the navigation system are
also used to determine the current speed limit.
If a traffic sign that is relevant to your vehicle is
passed, the display of the speed limits and over-
taking restrictions is updated.
The display can also be updated without a visible
traffic sign if:
the vehicle changes roads (e.g. motorway exit
R
or slip road)
a village or town boundary is passed which is
R
stored in the digital map
the last traffic sign detected by the camera
R
has not been repeated
If a sign indicating the end of a restriction (speed
limit or overtaking restriction) is passed, the
sign is displayed for five seconds. The currently
applicable traffic regulation continues to be
shown in the assistance graphic display.
The camera also detects traffic signs with a
restriction indicated by an additional sign (e.g. in
wet conditions).
The traffic signs are only displayed with the
restrictions if:
the regulation must be observed with the
R
restriction, or
Traffic Sign Assist is unable to determine
R
whether the restriction applies
If Traffic Sign Assist is unable to determine a
maximum permitted speed from any of the avail-
able sources, no speed limit is displayed in the
instrument cluster either.
Traffic Sign Assist is not available in all coun-
tries. In this case, symbol : is shown in the
assistance graphic display (
Important safety notes
Traffic Sign Assist is only an aid and is not always
able to correctly display speed limits and over-
taking restrictions. Traffic signs always have pri-
ority over the Traffic Sign Assist display.
page 207).
Y
The system may be either functionally impaired
or temporarily unavailable if:
visibility is poor, e.g. due to snow, rain, fog or
R
spray
there is glare, e.g. from the sun being low in
R
the sky
there is dirt, ice or misting on the windscreen
R
in the vicinity of the camera
traffic signs are hard to detect (dirt, ice, snow)
R
the traffic signs are insufficiently lit at night
R
signs are ambiguous (e.g. traffic signs on con-
R
struction sites or in adjacent lanes)
the information in the digital street map of the
R
navigation system is incorrect or out of date
Switching the message function on/off
If you have activated the Traffic Sign Assist dis-
play in the on-board computer, the traffic regu-
lations (speed limits and overtaking restrictions)
are displayed in the instrument cluster for five
seconds respectively. The wrong-way warning
and the traffic sign display for speed limits and
overtaking restrictions remain active even when
the display has been deactivated.
Switch on the Traffic Sign Assist message
X
function via the on-board computer
(
page 207).
Y
Instrument cluster display
Showing the assistance graphic
Call up the assistance graphics display func-
X
tion using the on-board computer
(
page 207).
Y
Select the Traffic Sign Assist display.
X
Detected traffic signs are displayed in the
instrument cluster.
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