Lexus LS460 2011 Owner's Manual page 309

2-4. Using other driving systems
In the case shown above, the truck appears to be outside of the pro-
jected path guide lines and the vehicle does not look as if it will hit
the truck. However, the width of the truck extends out from the
truck in a line, and this line may actually be on the projected path
guide lines. In reality if you back up as guided by the projected
path guide lines, the vehicle may hit the truck.
Similarly, when the projected path guide lines pass near any
object(s) or obstacle(s), be sure to check the area behind and
around the vehicle visually.
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