Toyota PRIUS Owner's Manual page 386

386
4-5. Using the driving support systems
The Rear Crossing Traffic Alert function detection areas
The areas that vehicles can be detected in are outlined below.
To give the driver a more consistent time to react, the buzzer can alert
for faster vehicles from farther away.
Example:
Approaching vehicle
■
The Rear Crossing Traffic Alert function is operational when
●
The BSM system is set to on. (→P. 152)
● The shift position is in R.
●
Vehicle speed is less than approximately 8 km/h (5 mph).
● Approaching vehicle speed is between approximately 8 km/h (5 mph) and
28 km/h (18 mph).
PRIUS_OM_OM47A31E_(EE)
Fast 28 km/h (18 mph)
Slow 8 km/h (5 mph)
1
Speed
5.5 m (18 ft.)
Approximate
alert distance
20 m (65 ft.)