Lexus RX330 2005 Owner's Manual page 440

The dynamic laser cruise control function operates
automatically and depending on whether a vehicle is
detected ahead may change the speed of your vehicle as
follows.
If no vehicle is running ahead of you —
Cruising at a fixed speed: If there is no vehicle detected
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ahead, your cruising speed is maintained at the preset
speed from about 45 km/h (28 mph) to about 135 km/h (85
mph). The preset speed is displayed in the display. For
the vehicle speed setting, see "(c) Setting the desired
speed" on page 424.
STARTING AND DRIVING
If a vehicle is detected ahead of you —
Deceleration cruising function: If a slower moving
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vehicle is detected ahead of you, your vehicle cruising
speed decreases within the range of about 40 km/h (25
mph) to about 135 km/h (85 mph). The display shows the
preset speed, the detected vehicle ahead and selected
vehicle−to−vehicle distance. If your vehicle gets closer to
the vehicle ahead because of insufficient automatic
deceleration, then the alarm warns you to also manually
apply brakes.
Follow−up cruising function: After deceleration, your
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vehicle cruising speed changes in proportion to the speed
of the vehicle ahead to maintain an appropriate distance
from your vehicle to the vehicle ahead.
vehicle−to−vehicle distance can be changed. For details,
see "(h) Changing vehicle−to−vehicle distance" on page
427.
The
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