Traffic Sign Detection - Porsche 911 Manual

Traffic Sign Detection

Lack of attention
WARNING
Responsibility when driving, e.g. choosing an appro-
priate speed, remains with the driver even if traffic
sign detection is being used. The system is no sub-
stitute for attention on the part of the driver.
Traffic sign detection does not adjust the speed of
the vehicle to specified speed limits.
e Drive with extreme care.
e Always pay attention to the traffic situation and
the area around the vehicle.
e Adapt your driving speed to traffic conditions.
Failure of camera to de-
WARNING
tect traffic signs
Camera vision can be impaired by various factors (e.
g. rain, snow, ice, heavy spray and oncoming head-
lights). Sometimes the camera cannot detect traffic
signs or cannot detect them correctly. When this
happens, no speed limit or bend ahead warning, or an
incorrect speed limit or bend ahead warning is dis-
played. Traffic signs on the road always have priority.
e Always pay attention to traffic signs when driv-
ing on public roads.
e Drive with extreme care.
e Always keep the direction of travel in your field of
view.
Traffic sign detection uses a 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 in combination with the naviga-
tion system's map data and shown on the instru-
ment cluster.
If a speed limit is confined to a wet road, fog or a
certain time, the detected additional sign is
compared with the information provided by the ve-
hicle (e.g. rain sensor, navigation data and time).
The bend ahead warning is issued approx. 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.
Fig. 204: Windscreen camera
Information
Traffic sign detection is available in limited form in
the following sample situations for example:
– Camera heavily soiled, iced-up or covered (e.g.
stickers)
– In unfavourable weather conditions (e.g. heavy
rain)
– Traffic signs covered or damaged
Traffic Sign Detection
Information
To ensure there is no interference with camera
operation:
– Do not cover the camera area on the interior
mirror A with objects (e.g. stickers).
– The camera must always be kept free of dirt, ice
and snow.
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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