How is the effectiveness of the anti-lock braking system confirmed?

The effectiveness of the anti-lock braking system (ABS) is confirmed primarily by ensuring that the ABS warning light is off and that the system functions correctly. When the vehicle is started, the ABS warning light should illuminate briefly during the self-check and then turn off. This indicates that the system has completed its diagnostic checks and is operational. If the light stays on, it signifies that there is a fault within the ABS that needs to be addressed.

Additionally, the functioning of the system is assessed through a practical check, such as verifying that the brakes respond properly under hard braking conditions, as this is a critical component of ABS operation. This comprehensive approach to confirming the system's functionality ensures not only that the warning indicators are correct but also that the system performs as designed in real-world driving scenarios.

The other options do not provide a thorough assessment of the ABS. Simply checking the brake pads for wear does not indicate anything about the functionality of the ABS itself. Measuring the brake fluid level may be important for braking performance but does not directly confirm ABS effectiveness. Lastly, stating that there are no checks for the anti-lock system is incorrect, as regular checks are essential for safety and performance.