Lanes 2 & 3 of 3 Narrow (advance)

Lanes 2 & 3 of 3 Narrow (Advance) signs appear on Irish three-lane motorways ahead of construction zones where center and right lanes continue but at reduced widths while left lane maintains standard width.

Common approaching barrier installations affecting right side of M50, bridge construction areas on M1 where right-side work affects lanes 2 and 3 widths, and hard shoulder conversion projects where equipment encroaches from right edge.

The 'advance' designation indicates early warning positioned 200-400 meters before actual narrowing.

These signs appear before right-side resurfacing operations where edge work affects center and right lanes, drainage projects requiring temporary width restriction on right two-thirds, and smart motorway implementation zones where right-side equipment reduces available width in lanes 2 and 3.

Center and right lanes will narrow ahead within 200-400 meters, with left lane maintaining standard width and actual restriction indicated by subsequent non-advance signs.

This advance warning allows preparation while still in full-width lanes.

Reduce speed to 80-100 km/h and increase lane positioning attention if using center or right lanes.

Move toward lane centers and reduce following distances preparing for restricted clearances in two lanes.

If comfortable, consider moving to left lane which remains standard width.

The advance warning provides time to adjust driving style or change lanes before encountering actual center/right lane restrictions where precise positioning becomes critical in those two lanes.

Ignoring advance dual-lane narrow warnings and entering restrictions at excessive speed constitutes careless driving with 2 penalty points and fines up to €2,000.

Maintaining inappropriate speed through subsequently narrowed center/right lanes can result in dangerous driving charges: 5 penalty points, €5,000 fines, and disqualification.

Three-lane motorway construction zones have intensive enforcement.

Advance warning violations are prosecuted as deliberate disregard for progressive safety information.

Collisions in narrow sections after ignoring advance warnings result in enhanced liability recognizing clear warning systems provided.

Poor lane discipline in narrowed center/right lanes with left lane available results in additional prosecution.

Dual-lane narrow advance warnings test understanding of partial-restriction hazard communication on three-lane motorways.

You must recognize that advance warnings for center/right lane narrowing require immediate preparation or lane change consideration as left lane remains standard.

Theory questions test recognition that center/right narrowing offers left lane option unlike full three-lane narrowing, and understanding of lane choice implications.

Practical assessments evaluate whether you respond to advance warnings with appropriate speed reduction and positioning preparation or safe left lane change.

Proper advance warning response demonstrates anticipatory skills and lane selection judgment essential for three-lane motorway construction navigation.