APRILIA tuono v4 Owner's Manual page 48

a-PRC consists of four systems:
ATC: Aprilia Traction Control;
AWC: Aprilia Wheelie Control;
ALC: Aprilia Launch Control;
AQS: Aprilia Quick Shift.
WARNING AND INDICATOR LIGHTS, KEY
- Indicator light off: with system activated with vehicle in motion or system activated
after exceeding 5 Km/h (3.1 mph) after key-on;
- Indicator light continuously lit: with system intentionally deactivated by rider or in
the event of a malfunction causing deactivation;
- Indicator light flashing slowly: with system active after key-on before exceeding
5 Km/h (3.1 mph) or in the case of certain malfunctions causing ATC level to be locked
("+" and "-" buttons disabled);
- Indicator light flashing quickly: when one of the a-PRC functions (ATC, AWC and
ALC) is actively invoking traction control.
Aprilia Traction Control
Traction control: a system designed to help the rider control wheelspin.
ATC is a system that monitors and, if necessary, limits rear wheelspin under acceler-
ation to increase vehicle stability.
While ATC improves vehicle control, it does not allow the physical handling limits of
the vehicle to be exceeded. The rider is fully responsible for riding at a suitable speed
based on weather and road conditions, always leaving an appropriate safety margin.
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