Lexus GS430 User Manual page 427

STARTING AND DRIVING
(d) Changing vehicle−to−vehicle distance
G31016
" 1 Long
2 Middle 3 Short
You can select one of the following vehicle−to−vehicle
distances: "Long", "Middle" or "Short". Each time you
pull the distance switch briefly toward you, the setting
changes from "Long" to "Middle" to "Short" and then
back to "Long". You can confirm the setting on the
multi−information display.
It should be noted that pulling the "DISP" switch will change to
another screen.
Your vehicle speed changes in proportion to the speed of
the vehicle ahead, maintaining the selected distance.
However, if the vehicle speed is slower, the selected
distance will be shorter than the designated distance.
When the vehicle−to−vehicle distance control mode is
activated or the multi−information display indicates "RADAR
READY", the vehicle−to−vehicle distance setting can be
changed.
406
The vehicle−to−vehicle distance is always set to "Long" when
the engine switch is turned on.
CAUTION
D Select
the vehicle−to−vehicle
considering traffic conditions. The approximate
vehicle−to−vehicle distance
interval when driving at 80 km/h (50 mph) is
shown below :
"Long" . . . . . . . . about 50 m (about 164 ft.)
"Middle" . . . . . . about 40 m (about 132 ft.)
"Short" . . . . . . . about 30 m (about 100 ft.)
If the vehicle speed is slower than 80 km/h (50 mph),
the distance will be shorter than the above.
D During long downhill driving, the vehicle−to−vehicle
distance will be shorter than the selected distance.
distance
based on time