Mazda CX-8 Owner's Manual page 26

When Driving
Traffic Sign Recognition System (TSR)
WARNING
Always check the traffic signs visually while driving.
The TSR helps prevent the driver from overlooking traffic signs and provides
support for safer driving. Depending on the weather conditions or problems
with traffic signs, a traffic sign may not be recognised or a traffic sign
different from the actual traffic sign may be displayed. Always make it your
responsibility as a driver to check the actual traffic signs. Otherwise, it could
result in an accident.
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For details, refer to Section 4, "i-ACTIVSENSE".