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section of road in the wrong direction triggers a
warning. Traffic Sign Assist detects traffic signs
with multifunction camera : attached at the
top of the windscreen. The data and general
traffic regulations stored in the navigation sys-
tem 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 in the following situations:
The vehicle changes roads, e.g. motorway exit
R
or slip road
A village or town boundary that is stored in the
R
digital map is passed
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 appears for five seconds. The currently
applicable traffic regulation continues to be
shown in the assistance graphic display
(
page 231).
Y
The camera also detects traffic signs with a
restriction indicated by an additional sign (e.g. in
wet conditions).
The traffic signs are displayed on the instrument
cluster with the restrictions only in the following
situations:
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 permissible speed from any of the
available sources, no speed limit is displayed on
the instrument cluster either.
Traffic Sign Assist is not available in all coun-
tries. In this case, the display : appears in the
speedometer.
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.
The system may be either functionally impaired
or temporarily unavailable in the following sit-
uations:
Visibility is poor, e.g. due to snow, rain, fog or
R
spray
Glare, e.g. from the sun being low in the sky
R
Dirt, ice or misting on the windscreen in the
R
vicinity of the camera
Traffic signs are hard to detect, e.g. due to
R
dirt, ice, snow
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navigation system is incorrect or out of date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 mes-
sage function in the on-board computer, the
traffic regulations (speed limits and overtaking
restrictions) are displayed on 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 deacti-
vated.
Switch on the Traffic Sign Assist message
X
function via the on-board computer
(
page 233).
Y
Instrument cluster display
Showing the assistance graphic
Call up the assistant display function using
X
the on-board computer (
Detected traffic signs appear on the instru-
ment cluster.
Driving systems
page 231).
Y
203
Z
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