BMW G12 Product Information page 53

G12￿Driver￿Assistance￿Systems
11.￿Road￿Sign￿Recognition
Additional￿information￿is￿requested￿by￿the￿system￿from￿the￿vehicle￿electrical￿system￿before￿displaying
speed￿limits￿or￿no￿overtaking￿signs￿with￿restrictive￿validity.￿For￿example,￿for￿"in￿wet￿weather"￿signs￿the
status￿of￿the￿wiper￿is￿evaluated￿or￿for￿"in￿frost/snow"￿the￿temperature￿value￿of￿the￿outside￿temperature
sensor￿is￿evaluated.
Temporal￿restrictions￿of￿the￿speed￿limit￿or￿no￿overtaking￿sign￿can￿only￿be￿evaluated￿correctly￿if￿the
validity￿duration￿is￿stored￿in￿the￿navigation￿map￿and￿the￿clock￿is￿set￿correctly￿in￿the￿vehicle.￿Otherwise,
the￿speed￿limit￿or￿the￿no￿overtaking￿sign￿is￿displayed￿as￿currently￿valid.
The￿trailer￿signal￿for￿vehicles￿in￿trailer￿towing￿is￿not￿evaluated￿for￿the￿display￿of￿speed￿limits￿as￿the
speed￿limits￿for￿vehicles￿with￿trailer￿are￿specific￿to￿the￿national￿market￿and￿dependent￿on￿the￿trailer
type.
Other￿additional￿characters￿are￿not￿recognized.￿The￿speed￿limit￿or￿the￿no￿overtaking￿sign￿is￿then
displayed￿as￿currently￿valid￿without￿the￿interpretation￿of￿the￿additional￿character.
Road￿signs￿on￿parallel,￿branching-off￿or￿merging￿roads￿and￿on￿exits
Parallel￿roads￿are￿not￿recognized,￿neither￿by￿the￿KAFAS￿stereo￿camera￿nor￿with￿the￿help￿of￿the
navigation￿map.￿Signs￿on￿these￿roads￿can￿be￿recognized￿and￿displayed￿as￿speed￿limits￿or￿no
overtaking￿for￿the￿current￿road.
Speed￿limits￿and￿no￿overtaking￿signs￿for￿forking￿or￿emerging￿roads￿are￿generally￿also￿assumed￿and
displayed￿for￿the￿current￿road.
Speed￿limits￿for￿exits￿off￿highways￿with￿or￿without￿an￿arrow￿as￿an￿additional￿character￿are￿generally
evaluated￿correctly￿and￿suppressed￿in￿the￿display￿if￿driven￿past.￿This￿is￿only￿the￿case￿if￿the￿data￿on￿the
navigation￿map￿is￿up-to-date.
In￿the￿case￿of￿gantry￿signs￿on￿the￿highway￿with￿different,￿lane-dependent￿speed￿limits,￿the￿speed￿limit
which￿is￿closest￿to￿the￿vehicle's￿lane￿is￿displayed.￿There￿is￿no￿adaptation￿of￿the￿display￿after￿a￿later￿lane
change.
Information￿signs￿in￿the￿road￿sign￿surroundings
Information￿signs￿with￿speed￿limits￿or￿no￿overtaking￿stipulations,￿such￿as￿at￿border￿crossing￿points
with￿information￿on￿the￿different￿legal￿maximum￿speeds￿for￿single-lane￿roads￿and￿highways,￿may￿be
incorrectly￿recognized￿as￿currently￿valid￿and￿displayed.￿The￿same￿applies￿to￿information￿signs￿with
different￿color￿configurations,￿for￿example￿for￿minimum￿or￿recommended￿speeds.
Stickers￿on￿vehicles
Stickers￿with￿a￿speed￿limit￿on￿vehicles￿ahead￿or￿overtaken,￿such￿as￿trucks,￿buses,￿trailers￿or
construction￿machinery,￿etc.,￿may￿be￿incorrectly￿recognized￿as￿a￿currently￿valid￿speed￿limit￿and
displayed.
Town/city￿limits
If￿the￿sign￿for￿the￿entrance￿to￿a￿village/town￿is￿not￿clearly￿recognized￿and￿the￿data￿from￿the￿navigation
map￿is￿not￿up-to-date,￿the￿speed￿limit￿at￿the￿entrances￿to￿and￿exits￿from￿villages/towns￿may￿be
displayed￿incorrectly.
Legal￿changes
If￿legally￿prescribed￿maximum￿speeds￿change,￿then￿these￿are￿only￿available￿after￿a￿software￿update.
Up￿until￿the￿update￿the￿original,￿current￿but￿no￿longer￿valid￿speed￿limits￿are￿displayed.
47