Mazda 3 Quick Manual page 16

When Driving
Adaptive LED Headlights (ALH)
The Adaptive LED Headlights (ALH) are controlled between high and low beams
as follows to assure the driver's visibility without dazzling a vehicle ahead or a
vehicle approaching in the opposite direction.
Glare-free high beam
This feature dims only the high-beam light shone on the vehicle ahead.
The high beams will dim while driving at a speed of about 40 km/h (25 mph) or
faster. When the vehicle speed is less than about 30 km/h (18 mph), the beams
switch to the low beams.
NOTE
The headlight high-beam indicator light turns on while the high beams are on.
Wide-range low beam
This feature extends the illumination range of the light cast by the low beams while
driving at a speed less than about 40 km/h (25 mph).
Highway mode
This feature shifts the illumination angle of the light cast by the headlights upward
while driving on highways.
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For details, refer to Section 4, "i-ACTIVSENSE".