Mazda 3 Quick Manual page 25

When Driving
Lane-keep Assist System (LAS) & Lane Departure Warning System (LDWS)
The Lane-keep Assist System (LAS) & Lane Departure Warning System (LDWS)
alerts the driver that the vehicle may be deviating from its lane and it provides
steering assistance to help the driver stay within the vehicle lanes.
The steering wheel operation of the Lane-keep Assist System (LAS) & Lane
Departure Warning System (LDWS) has "Late" and "Early" steering assist timing
settings.
"Late" and "Early" timing can be changed (timing at which steering operation
assist is provided) by changing the setting. Details are described in Setting
Change (Personalisation Features) in the related text.
"Late" setting
Do not rely completely on the Lane-keep Assist System (LAS) & Lane
Departure Warning System (LDWS):
• The Lane-keep Assist System (LAS) & Lane Departure Warning System
(LDWS) is not an automatic driving system. In addition, the system is not
designed to compensate for a driver's lack of caution, and over-reliance
on the system could lead to an accident.
• The detection ability of the Lane-keep Assist System (LAS) & Lane
Departure Warning System (LDWS) is limited. Always stay on course
using the steering wheel and drive with care.
Other details are described in the related text.
NOTE
The Lane-keep Assist System (LAS) & Lane Departure Warning System
(LDWS) may not be able to detect white (yellow) lane lines correctly and it
may not operate normally.
Other details are described in the related text.
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For details, refer to Section 4, "i-ACTIVSENSE".
"Early" setting
WARNING