Lexus LX 570 Owner's Manual page 408

RCTA function detection areas
The areas that vehicles can be detected in are outlined below.
The buzzer can alert the driver of faster vehicles approaching from farther away.
Example:
Approaching vehicle
The RCTA function is operational when
■
The RCTA function operates when all of the following conditions are met:
The RCTA function is on.
●
The shift lever is in R.
●
The vehicle speed is less than approximately 8 km/h (5 mph).
●
The approaching vehicle speed is between approximately 8 km/h (5 mph) and 28
●
km/h (18 mph).
LX570_450d_OM_OM60R63E_(GE)
Fast 28 km/h (18 mph)
Slow 8 km/h (5 mph)
4-5. Using the driving support systems
1
Speed
407
Approximate
alert distance
20 m (65 ft.)
5.5 m (18 ft.)
4