Driver assist systems
Camera-based traffic
sign recognition
Description
Applies to: vehicles with camera-based traffic sign recogni
tion
Fig. 91
Instrument cluster: Traffic sign recognition
Fig. 92
Windscreen: Camera window for traffic sign recog
nition
Traffic signs detected by the camera appear in
the infotainment display to keep you informed of
current speed restrictions and no-overtaking
zones. In cases where the system is able to de
tect temporary speed limits applicable in wet
weather
r;J
or at certain times of day�
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Fig. 91
it will also display these traffic restric
tions.
General notes
The traffic sign recognition system can detect
standardised speed limit signs within the cam
era's range of vision. It makes use of the naviga
tion data to evaluate the detected speed limits
and show them on the display. Under certain con
ditions, the system will also display the legal
speed limits on roads without speed limit signs.
Traffic sign recognition is not available in all
countries. For a current list, see the Internet (e.g.
www.audi.com). The system is also subject to
90
certain inherent restrictions and may be partially
or completely unavailable in the following situa
tions:
- If
visibility is impaired by snow, rain, fog or
heavy road spray.
- In dazzling light, e.g. from the sun or oncom
ing traffic.
- At high speeds.
- If the camera's range of vision
¢
Fig. 92
is im-
paired, e.g. by dirt or stickers. Notes on clean
ing
¢page
263.
- If
the traffic signs are partially or completely
obscured, e.g. by trees, snow, mud or other
vehicles.
- If
traffic signs deviate from the standard ap
pearance (round with red border).
- If traffic signs are damaged or bent.
- If
matrix traffic signs are mounted on overhead
gantries.
- If traffic signs or routes have changed (naviga-
tion data out of date).
Some types of slow moving vehicles (such as
heavy goods vehicles) carry speed stickers which,
if detected by the system, may affect the display.
A
WARNING
Always direct your full attention to the road
and surroundings, even when you are using
traffic sign recognition. The actual traffic
signs on your route always take precedence
over the information on the display. It is al
ways the driver's responsibility to assess the
traffic situation and take appropriate care.
- Under adverse conditions, the traffic sign
recognition system may misinterpret or fail
to detect traffic signs. It is therefore possi
ble that the speed limit display may occa
sionally be unavailable or even incorrect.
- The traffic sign recognition system does not
warn you if you exceed the speed limit and
does not alter the speed of your vehicle to
obey the speed limit.
- The speed limit displayed in the instrument
cluster is given in the units applicable in a
particular country. For example, if
SO
is dis-
played on the instrument cluster, this may
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