7-61
07
Limitations of Intelligent Speed 
Limit Assist
Intelligent Speed Limit Assist may not 
operate properly, or it may operate 
unexpectedly under the following 
circumstances:
ś 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
 - A road sign near the road you are 
driving is detected 
ś The road signs do not conform to the 
standards below:
 - 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
 - There is no conditional road signs 
on the road sign located on the exit 
road
 - A sign is attached to another vehicle
ś The distance between the vehicle and 
the road signs is too far
ś The vehicle encounters illuminant 
road signs
ś Intelligent Speed Limit Assist 
incorrectly recognizes numbers or 
pictures in the street signs or other 
signs as the speed limit
ś A road sign near the road you are 
driving is detected
ś Multiple signs are installed close 
together
ś The minimum speed limit sign is 
misrecognize
ś The minimum speed limit sign is on 
the road
ś The brightness changes suddenly, for 
example when entering or exiting a 
tunnel or passing under a bridge
ś Headlamps are not used or the 
brightness of the headlamps are weak 
at night or in the tunnel
ś Road signs are difficult to recognize 
due to the reflection of sunlight, street 
lights, or oncoming vehicles
ś The navigation information or GPS 
information contain errors.
ś The driver does not follow the guide 
of the navigation.
ś The driver is driving a new road that is 
not in the navigation system yet.
ś The field of view of the front view 
camera is obstructed by sun glare
ś Driving on a road that is sharply 
curved or continuously curved
ś Driving through speed bumps, or 
driving up and down or left to right on 
steep inclines 
ś The vehicle is shaking heavily
ś Driving on a newly opened road
:$51,1*
ś Intelligent Speed Limit Assist is a 
supplemental function that helps the 
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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 this chapter.