Rcta Function Detection Areas - Toyota C-HR 2017 Owner's Manual

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4-5. Using the driving support systems

RCTA 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
C-HR_OM_Europe_OM10528E
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.)