Driver assistance system
7-60
Limitations of the system
Intelligent Speed Limit Assist may 
not operate normally, or the system 
may operate unexpectedly under the 
following circumstances:
•  The road sign is contaminated or 
indistinguishable
 - The road sign is difficult to see due 
to bad weather, such as rain, snow, 
fog, etc.
 - The road sign is not clear or 
damaged
 -  The road sign is partially obscured 
by surrounding objects or shadow
•  The road signs do not conform to the 
standard
 - The text or picture on the road sign 
is different from the standard
 - The road sign is installed between 
the main line and the exit road or 
between diverging roads
 - An conditional road sign is not 
installed with a sign located on the 
road to enter or exit
 - A sign is attached to another vehicle
•  The brightness changes suddenly, for 
example when entering or exiting a 
tunnel or passing under a bridge
•  Headlamps are not used or the 
brightness of the headlamps are weak 
at night or in the tunnel
•  Road signs are difficult to recognise 
due to the reflection of sunlight, street 
lights, or oncoming vehicles
•  The field of view of the front view 
camera is obstructed by sun glare
•  Driving on a road that is sharply 
curved or continuously curved
•  Driving through speed bumps, or 
driving up and down or left to right on 
steep inclines 
•  The vehicle is shaking heavily
:$51,1*
•  Intelligent Speed Limit Assist is a 
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 Information
For more details on the limitations of the 
front view camera, refer to “Forward 
Collision-Avoidance Assist (FCA)” section 
in chapter 7.