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07
7-67
Limitations of Intelligent Speed
Limit Assist
Intelligent Speed Limit Assist may not
operate properly, or it 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
- A road sign near the road you are
driving is detected
• 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
- There is no conditional road signs
on the road sign located on the exit
road
- A sign is attached to another vehicle
• The distance between the vehicle and
the road signs is too far
• The vehicle encounters illuminant
road signs
• Intelligent Speed Limit Assist
incorrectly recognizes numbers in the
street signals or other signs as the
speed limit
• A road sign near the road you are
driving is detected
• The minimum speed limit sign is
misrecognized
• The minimum speed limit sign is on
the road
• 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 recognize
due to the reflection of sunlight, street
lights, or oncoming vehicles
• The navigation information or GPS
information contain errors.
• The driver does not follow the guide
of the navigation.
• The driver is driving on a new road
that is not in the navigation system
yet.
• 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
• Driving on a newly opened road
Information
For more details on the limitations of the
front view camera, refer to “Forward
Collision-Avoidance Assist (FCA)” section
in this chapter.
WARNING
• Intelligent Speed Limit Assist is a
supplemental function that helps the
driver to comply with the speed limit
on the road, and may not display the
correct speed limit or control the
driving speed properly.
• Always set the vehicle speed to the
speed limit in your country.
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