273
Traffic Sign Detection
Fig. 222: Windshield camera
Traffic sign detection uses the camera A to detect
speed limits as well as the start and end points of
no-overtaking zones and bend ahead signs. Traffic
signs are evaluated together with the navigation
system’s map data and shown on the instrument
cluster.
If a speed limit is restricted to a wet road, fog or a
certain time, the detected additional sign is com-
pared with the information provided by the vehicle
(e.g. rain sensor, navigation data and time). Speed
limits for vehicles towing a trailer are also displayed
if a trailer is detected on the vehicle and the function
is activated in the PCM.
> Please see chapter "Trailer-relevant settings" on
page 274.
The bend ahead warning is issued approx. 500 ft.
(150 m) before a bend that is significant for the
driver and continues until the relevant bend has been
passed.
Traffic sign detection is country-dependent and is
not available for all countries.
When driving in a country in which traffic sign de-
tection is not available, the driver is alerted to this
fact by a message on the instrument cluster.
WARNING
Lack of attention
Responsibility while driving, e.g. choosing an appro-
priate speed, remains with the driver even when us-
ing traffic sign recognition. The system does not
replace the driver's attentiveness.
Traffic sign recognition does not adjust the speed of
the vehicle to specified speed limits.
e Drive with extreme care.
e Always check the traffic situation and the area
around the vehicle.
e Adjust driving speed to road conditions.
WARNING
Failure of camera to de-
tect traffic signs
The camera's view can be reduced by different in-
fluencing factors (e.g. rain, snow, ice, heavy water
spray and backlight). In some circumstances, the
camera may not detect traffic signs or may detect
them incorrectly, which will result in a speed limit or
bend ahead warning not being displayed or being
displayed incorrectly. Posted traffic signs always
take priority over the traffic sign recognition infor-
mation displayed in the instrument cluster.
e Always pay attention to the road signs.
e Drive with extreme care.
e Always keep your eyes on the road ahead.
Information
Traffic sign recognition is restricted in the following
situations, for example:
– Camera heavily soiled, iced-up or covered (e.g.
stickers)
– In unfavorable weather conditions (e.g. heavy
rain)
– Traffic signs covered or damaged
Information
To avoid impairing the detection performance of the
camera:
– Do not cover the camera area on the rearview
mirror A with objects (e.g. stickers).
– The camera must always be kept free of dirt, ice
and snow.
> Please see chapter "Car Care" on page 79.
Information
If the camera does not detect a traffic sign, the
speed limit stored in the navigation system will be
automatically displayed.
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