Lexus LS460 Owners Book page 241

NOTICE
In the following situations, the LKA will not work, or will not perform reliably:
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When lane markers are interrupted or are not present, such as before a tollbooth
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(tollgate).
When lane markers are only on one side of the road.
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When driving on a sharp curve.
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When lanes are extremely narrow or extremely wide.
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When the vehicle leans to one side an unusual amount due to a heavy load or
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improper tire inflation pressure.
When the following distance between your vehicle and the vehicle ahead is
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extremely short.
When the lane markers are broken, "Botts' dots", or "Raised pavement marker".
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When lane markers are obscured or partially obscured by sand, dirt, etc.
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When driving on a particularly bright road surface, such as concrete.
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When driving on a road surface that is bright due to reflected light.
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When driving in a location where the light level changes rapidly, such as the
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entrance to or exit from a tunnel.
When sunlight or the headlights of oncoming vehicles are shining directly into the
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camera lens.
When driving on roads that are branching or merging.
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When pavement lane markers are difficult to see due to rain, snow, fog, etc.
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When driving on a road surface that is wet due to rain, previous rainfall, standing
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water, etc.
When the vehicle experiences strong up-and-down motion such as when driving
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on an extremely rough road or on a seam in the pavement.
When headlight brightness is reduced due to dirt on the lenses, or when the
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headlights are misaligned.
When driving with a strong crosswind.
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2-4. Using other driving systems
2
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