Lane 2 of 2 Closed MLC

Lane 2 of 2 Closed MLC signs appear on Irish dual carriageways during extended major construction projects requiring long-term right lane closure.

Common on the N7 during multi-month resurfacing programs, N11 improvement works spanning several kilometers, and N25 upgrade projects between Cork and Waterford.

MLC (Major Lane Closure) indicates closure lasting weeks or months for substantial infrastructure changes.

These signs appear during major bridge replacement projects, extensive barrier installation programs, complete drainage system reconstruction, and during road widening preparations where the right lane must be dedicated to construction for extended periods while left lane maintains single-file traffic flow throughout the project duration.

Major Lane Closure (MLC) of the right lane on a two-lane dual carriageway indicates long-term construction reducing capacity to single lane for weeks or months.

All traffic must use the left lane throughout the project duration.

Reduce speed to posted construction limits (typically 60-80 km/h) and merge left early in well-established merge zones.

Significant delays are inevitable, particularly during peak hours, as complete capacity reduction to single lane creates substantial congestion.

The long-term nature means this becomes the standard traffic pattern - plan significantly extra journey time or consider alternative routes.

MLC single-lane operation represents the most severe capacity restriction on dual carriageways.

Major Lane Closure violations reducing two-lane roads to single lane carry severe penalties due to complete capacity elimination and extended worker presence.

Speed violations result in €160-€400 fines with 2-5 penalty points, routinely doubled or tripled in MLC zones.

Continuing in the closed right lane constitutes dangerous driving: 5 penalty points, €5,000 fines, mandatory disqualification, and imprisonment.

Average speed cameras monitor entire MLC zones automatically detecting violations across construction length.

Courts impose maximum penalties for MLC single-lane violations recognizing the extreme danger to workers with no traffic management alternatives available.

Major Lane Closure (MLC) on two-lane roads represents the most severe construction scenario covered in Irish theory tests.

You must understand MLC complete capacity reduction requires major journey planning, acceptance of significant delays, and consideration of alternative routes.

Theory questions test understanding that MLC duration (weeks/months) combined with single-lane restriction creates conditions requiring fundamental route planning rather than minor adjustments.

Demonstrating knowledge of MLC single-lane impacts shows comprehensive understanding of Irish traffic management hierarchies and readiness for the most challenging construction scenarios affecting dual carriageway networks.