What do KEEP CLEAR road markings mean in Northern Ireland?

KEEP CLEAR road markings are intended to keep access or a section of carriageway unobstructed, but their exact legal effect depends on accompanying signs and the specific restriction.

Some markings are advisory, while school entrance markings can be supported by a signed no-stopping restriction at stated times.

Northern Ireland's Highway Code uses signs, signals and road markings together, so the safest reading is always the exact sign at the location plus any lane arrows, plates or temporary traffic management. Rules expressed as ‘must’ or ‘must not’ are legal requirements; advisory wording can still be used as evidence when responsibility for a collision is considered.

For this exact question — “What do KEEP CLEAR road markings mean in Northern Ireland?” — the practical point is: Do not stop on the marking simply because traffic ahead is moving slowly; check nearby plates and leave access clear. The answer should be applied to the actual signs, conditions, licence wording or parking rules in force at the time, because temporary restrictions and individual DVA decisions can change the ordinary position.