Toyota PRIUS Owner's Manual page 334

334
4-5. Using the driving support systems
Warning display
In the following situations, the RSA system alerts the driver using a
warning display.
● When the vehicle speed exceeds the speed warning threshold
applied to the speed limit of the sign displayed on the multi-informa-
tion display, the sign color becomes inverted.
● If it is detected that your vehicle is overtaking when a no overtaking
sign is displayed on the multi-information display, the sign flashes.
■
Automatic turn-off of RSA sign display
One or more signs automatically turn off in the following situations.
● A new sign is not recognized for a certain distance.
●
The road changes due to a left or right turn, etc.
■
Conditions in which the function may not operate or detect correctly
In the following situations, RSA does not operate normally and may not rec-
ognize signs, display the incorrect sign, etc. However, this does not indicate a
malfunction.
●
The camera sensor is misaligned due to a strong impact being applied to
the sensor, etc.
● Dirt, snow, stickers, etc., are on the windshield near the camera sensor.
●
In inclement weather such as heavy rain, fog, snow or sand storms
●
Light from an oncoming vehicle, the sun, etc., enters the camera sensor.
●
The sign is dirty, faded, tilted or bent, and if an electronic sign, the contrast
is poor.
●
All or part of the sign is hidden by the leaves of a tree, a pole, etc.
● The sign is only visible to the camera sensor for a short amount of time.
●
The driving scene (turning, lane change, etc.) is judged incorrectly.
●
Even if it is a sign not appropriate for the currently traveled lane, such a sign
exists directly after a freeway branches, or in an adjacent lane just before
merging.
●
Stickers are attached to the rear of the preceding vehicle.
●
A sign resembling a system compatible sign is recognized.
●
The vehicle is driven in a country with a different direction of traffic.
●
Side road speed signs may be detected and displayed (if positioned in sight
of the camera sensor) while the vehicle is traveling on the main road.
●
Roundabout exit road speed signs may be detected and displayed (if posi-
tioned in sight of the camera sensor) while traveling on a roundabout.
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