BMW G12 Product Information page 29

G12￿Driver￿Assistance￿Systems
7.￿Collision￿Warning
If￿the￿vehicle￿is￿approaching￿the￿vehicle￿driving￿ahead￿or￿a￿pedestrian￿at￿a￿very￿low￿speed,￿an￿acute
warning￿is￿not￿issued￿even￿when￿the￿distance￿is￿very￿small.￿This￿intentional￿driving￿situation￿only
triggers￿the￿early￿warning.￿This￿way￿there￿are￿fewer￿meaningless￿and￿annoying￿acute￿warnings￿issued
by￿the￿system.
The￿acute￿warning￿cannot￿be￿deactivated￿separately.￿The￿timing￿of￿the￿acute￿warning￿also￿cannot￿be
adjusted.￿If￿the￿acute￿warning￿is￿not￿to￿be￿issued,￿the￿"collision￿warning"￿front￿protective￿function￿must
be￿deactivated.
If￿an￿acute￿warning￿is￿issued,￿this￿is￿indicated￿to￿the￿driver￿by￿a￿red￿flashing￿vehicle￿symbol￿or￿a￿red
flashing￿person￿symbol￿in￿the￿instrument￿cluster￿(KOMBI)￿or￿Head-Up￿Display.￿In￿addition,￿an￿acoustic
warning￿signal￿is￿sounded.
The￿acute￿warning￿for￿pedestrians￿is￿issued￿within￿a￿speed￿range￿of￿approximately￿10 km/h￿to￿60 km/h.
The￿acute￿warning￿for￿vehicles￿is￿issued￿at￿speeds￿above￿approximately￿5 km/h.
When￿the￿acute￿warning￿is￿issued,￿the￿brake￿system￿is￿also￿preconditioned￿in￿order￿to￿achieve￿quicker
and￿sharper￿deceleration.￿With￿these￿measures￿the￿driver￿also￿receives￿specific￿support￿at￿the￿same
time￿as￿the￿warning￿in￿order￿to￿be￿able￿to￿respond￿effectively.
The￿acute￿warning￿does￿not￿relieve￿the￿driver￿of￿his￿responsibility￿to￿adapt￿the￿speed￿and￿driving￿style
to￿the￿traffic￿conditions.
7.2.4.￿Brake￿intervention
With￿the￿camera￿based,￿collision￿warning￿w/￿city￿collision￿mitigation￿(OE￿ZN3￿included￿with￿OE￿5AS);
If￿the￿driver￿no￿longer￿has￿the￿option￿to￿avoid￿the￿accident￿with￿his￿own￿response,￿automatic￿brake
intervention￿is￿effected￿as￿a￿last￿step.￿The￿brake￿intervention￿is￿effected￿at￿a￿brake￿force￿of￿about￿4 m/
s²￿(camera￿based)￿and￿can￿have￿the￿effect￿of￿avoiding￿a￿collision￿up￿to￿a￿differential￿speed￿of￿about
18 km/h.￿At￿higher￿differential￿speeds￿the￿impact￿speed￿is￿reduced￿by￿a￿smaller￿amount.￿Just￿like￿the
driver￿can￿support￿the￿effect￿of￿the￿system,￿he￿also￿has￿the￿option￿of￿overriding￿and￿thus￿cancelling
the￿automatic￿panic￿braking￿at￿any￿time￿with￿a￿steering￿wheel￿movement￿(avoidance￿maneuver),￿by
accelerating￿or￿with￿a￿sharp￿brake￿intervention.
With￿the￿camera￿and￿radar￿based,￿collision￿warning￿system￿(included￿with￿OE￿5AT);￿If￿the￿driver￿no
longer￿has￿the￿option￿to￿avoid￿the￿accident￿with￿his￿own￿response,￿automatic￿brake￿intervention￿is
effected￿as￿a￿last￿step.￿The￿brake￿intervention￿is￿effected￿at￿a￿brake￿force￿of￿about￿8 m/s²￿(camera/radar
based)￿and￿can￿have￿the￿effect￿of￿avoiding￿a￿collision￿up￿to￿a￿differential￿speed￿(delta)￿of￿about￿30 km/
h.
Therefore,￿both￿systems￿can￿bring￿car￿to￿a￿stop,￿the￿difference￿is￿that￿you￿are￿more￿likely￿to￿see￿this
happen￿in￿a￿5AT￿car￿then￿a￿5AS￿car.￿This￿is￿why￿5AS￿is￿referred￿to￿as￿"city￿collision￿MITIGATION"
because￿this￿is￿the￿more￿likely￿use￿case￿as￿opposed￿to￿"AVOIDANCE"￿with￿5AT.
The￿brake￿intervention￿is￿effected￿for￿pedestrians￿in￿the￿speed￿range￿between￿10￿and￿60 km/h￿and￿for
vehicles￿in￿the￿speed￿range￿between￿5￿and￿60 km/h.
For￿a￿brake￿intervention￿to￿be￿possible,￿the￿Dynamic￿Stability￿Control￿(DSC)￿must￿be￿switched￿on.
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