07
7-65
Limitations of Intelligent Speed
Limit Assist
Intelligent Speed Limit Assist may not
operate or it may not provide correct
information 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
- 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 or
pictures in the street signs or other
signs as the speed limit
• A road sign near the road you are driving is detected
• Multiple signs are installed close together
• 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
• Headlights are not used or the brightness of the headlights 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 area.
• Intelligent Speed Limit Assist may
not operate for 15 seconds after the
vehicle is started, or the front camera
is initialized.
Driver Assistance System7-90
Limitations of Smart Cruise Control
Smart Cruise Control may not operate
normally, or it may operate unexpectedly
under the following circumstances:
• The detecting sensor or the surroundings are contaminated or
damaged
• Washer fluid is continuously sprayed, or the wiper is on
• The camera lens is contaminated due to tinted, filmed or coated windshield,
damaged glass, or sticky foreign
material (sticker, bug, etc.) on the
glass
• Moisture is not removed or frozen on the windshield
• The field of view of the front view camera is obstructed by sun glare
• Street light or light from an oncoming vehicle is reflected on the wet road
surface, such as a puddle on the road
• The temperature around the front view camera is high or low
• An object is placed on the dashboard
• The surrounding is very bright
• The surrounding is very dark, such as in a tunnel, etc.
• The brightness changes suddenly, for example when entering or exiting a
tunnel
• The brightness outside is low, and the headlights are not on or are not bright
• Driving in heavy rain or snow, or thick fog
• Driving through steam, smoke or shadow • Only part of the vehicle is detected
• The vehicle in front has no tail lights,
tail lights are located unusually, etc.
• The brightness outside is low, and the tail lamps are not on or are not bright
• The rear of the front vehicle is small or does not look normal (for example,
tilted, overturned, etc.)
• The front vehicle’s ground clearance is low or high
• A vehicle suddenly cuts in front
• Your vehicle is being towed
• Driving through a tunnel or iron bridge
• Driving near areas containing metal substances, such as a construction
zone, railroad, etc.
• A material is near that reflects very well on the front radar, such as a
guardrail, nearby vehicle, etc.
• The bumper around the front radar is impacted, damaged or the front radar
is out of position
• The temperature around the front radar is high or low
• Driving in large areas where there are few vehicles or structures (for
example, desert, meadow, suburb,
etc.)
• The vehicle in front is made of material that does not reflect on the
front radar
• Driving near a highway (or motorway) interchange or tollgate
• Driving on a slippery surface due to snow, water puddle, ice, etc.
• Driving on a curved road
• The vehicle in front is detected late
• The vehicle in front is suddenly blocked by an obstacle
• The vehicle in front suddenly changes lane or suddenly reduces speed