Revision question · Band 2 traffic signs and signals, car control, pedestrians, mechanical knowledge

When will anti-lock brakes be activated?

Revision material from the imported DVSA bank includes source-checked Lanekind learning corrections. These corrections are not newly issued official examination questions, and practice does not reproduce a live test paper.

Answer options

When you don't brake quickly enough

When braking would otherwise lock a wheel

When you haven't seen a hazard ahead

When you're speeding on a slippery road surface

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When braking would otherwise lock a wheelThis was the right answer

ABS monitors wheel rotation and intervenes when braking would otherwise lock a wheel. The threshold depends on the available grip, so it is not defined by “excessive” pedal pressure. In an emergency, apply firm sustained pressure, keep steering and do not pump the pedal unless the vehicle handbook says otherwise.

Reviewed reading for this question

Rule 119Highway Code rule · The original ABS lamp was inspected. Firm sustained emergency pressure preserves steering by preventing lock; the corrected loose-surface and aquaplaning lessons do not promise shorter stops or missing grip.Rule 120Highway Code rule · The original ABS lamp was inspected. Firm sustained emergency pressure preserves steering by preventing lock; the corrected loose-surface and aquaplaning lessons do not promise shorter stops or missing grip.

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