G12�Driver�Assistance�Systems
11.�Road�Sign�Recognition
45
The�Speed�Limit�Information�optional�equipment�has�been�expanded�to�include�the�display�of�most
legal�signs�(�i.e.�normal�speed�limit�signs,�school�signs,�construction�signs)�and�will�be�referred�to�as
road�sign�recognition�from�now�on�in�this�document.�Current�top�speed�limitations�and�no�overtaking
signs�are�detected�by�the�road�sign�recognition�system�and�displayed�in�the�instrument�cluster�or�the
Head‐Up�Display�in�the�form�of�road�sign�symbols.
Top�speed�limitation�symbol�shown�in�the�instrument�cluster
Index Explanation
1 Road�sign�recognition�(example:�a�detected�top�speed�limitation�is�displayed)
The�display�of�road�signs�is�based�on�the�evaluation�of�data�from�the�navigation�system�and�the
evaluation�of�image�data�recorded�by�the�KAFAS�stereo�camera.
The�KAFAS�stereo�camera�detects�road�signs�at�the�edge�of�the�road�and�also�the�variable�displays�of
gantry�signs.�Road�signs�containing�additional�information,�e.g.�"In�wet�conditions",�are�also�detected
and�synchronised�with�vehicle-internal�data,�e.g.�the�rain�sensor,�and�displayed�depending�on�the
situation.
The�system�also�takes�the�applicable�time�restrictions�identified�into�account,�e.g.�"between�10.00
pm�and�6.00�am".�The�current�time�of�the�on-board�clock�is�used�for�this.�The�system�takes�the
information�stored�in�the�navigation�system�into�account�and�displays�existing�top�speed�limitations
on�sections�of�road�without�signage.
Road�sign�recognition�(Speed�Limit�Information)�is�part�of�the�Active�Driving�Assistant�optional
equipment�(OE�5AS)�in�the�G12.
The�system�does�not�relieve�the�driver�of�personal�responsibility�for�correctly�judging�the�visibility�and
traffic�situation.�The�driver�is�solely�responsible�for�the�vehicle�and�the�speed�at�which�it�is�driven.
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