What does ABS do?

What does ABS do?

• A. Prevents wheel lock by applying maximum brake pressure at all times.
• B. Monitors wheel spin and temporarily releases brakes to prevent locking.
• C. Increases braking force to all wheels equally regardless of conditions.
• D. Controls engine braking to prevent wheel slip.

Answer: (B)

ABS keeps the wheels from locking by watching how fast each wheel is turning and, if one is about to stop spinning, it momentarily releases brake pressure on that wheel and then reapplies it. This rapid on-off cycling lets the wheel keep turning and maintains steering control, so you can still steer while braking hard. That’s why the best description is the one that says it monitors wheel spin and temporarily releases brakes to prevent locking. The other choices aren’t accurate: ABS doesn’t push maximum brake pressure all the time, it doesn’t apply the same force to every wheel regardless of conditions, and engine braking isn’t part of ABS.

ABS keeps the wheels from locking by watching how fast each wheel is turning and, if one is about to stop spinning, it momentarily releases brake pressure on that wheel and then reapplies it. This rapid on-off cycling lets the wheel keep turning and maintains steering control, so you can still steer while braking hard.

That’s why the best description is the one that says it monitors wheel spin and temporarily releases brakes to prevent locking. The other choices aren’t accurate: ABS doesn’t push maximum brake pressure all the time, it doesn’t apply the same force to every wheel regardless of conditions, and engine braking isn’t part of ABS.