T Junction Ahead at Dual C'way (No CR Break)

This specialized sign appears where minor roads terminate at dual carriageways without central reservation breaks, requiring left-turn-only access.

Common on the M7/N7 Limerick-Dublin corridor, N8 Cork-Dublin route, N11 Wexford route, and other major dual carriageways where access control limits junction types.

Typical locations include agricultural areas where historical farm access roads intersect modern dual carriageway upgrades but safety considerations prevented full junction installation.

You'll also see these where residential estates or industrial parks require access but traffic volumes don't justify central reservation openings.

Sign placement occurs 200-300 metres before the junction, often accompanied by mandatory left-turn arrows at the junction itself.

These configurations are more common on newer dual carriageways where access management principles minimize crossing movements, and in areas where right-turn acceleration/deceleration lanes would be cost-prohibitive.

This sign warns that your road terminates at a dual carriageway T-junction where only left turns are possible due to continuous central reservation (median barrier) preventing crossing to the opposite carriageway.

You cannot turn right—the central reservation physically blocks that maneuver.

This configuration requires planning: if your destination lies to the right, you must turn left, proceed to the next junction with central reservation break (possibly several kilometers distant), perform a U-turn or roundabout maneuver, and return on the opposite carriageway.

The warning allows time to reconsider routes or prepare for the required left turn.

Some locations provide advance directional signage indicating distances to alternative routes.

The dual carriageway nature means high-speed traffic (100-120km/h) approaches from the left, requiring careful gap assessment even though you're not crossing traffic lanes.

Attempting to cross continuous central reservations to make prohibited right turns constitutes serious traffic offenses.

Crossing solid white lines or barriers results in dangerous driving charges (€5,000, 5 penalty points, potential disqualification), with collision risks extremely high given opposing traffic speeds of 100km/h+.

Vehicles that breach central reservation barriers face additional charges for damaging road infrastructure (€500-€2000 repair costs).

Fatal accidents involving prohibited right turns across dual carriageway central reservations often result in vehicular manslaughter charges with potential prison sentences.

Insurance companies void coverage for maneuvers involving clear regulatory violations—crossing central reservations where left-turn-only signs exist typically results in zero compensation.

The advance warning establishes driver awareness, making 'didn't realize' defenses ineffective.

Theory test questions about dual carriageway junctions emphasize understanding access restrictions and appropriate route planning.

Questions assess recognition of this sign, understanding that no right turn is physically possible, and knowledge of proper responses (plan routes using alternative junctions, or proceed left and U-turn at next opportunity).

Questions might present scenarios requiring route selection when encountering left-turn-only dual carriageway junctions.

Practical tests rarely include such junctions due to test route constraints avoiding high-speed dual carriageways, but candidates tested in areas with these configurations must demonstrate: recognition of the warning, appropriate preparation (early lane positioning, speed reduction, signaling), and safe left turn execution onto high-speed dual carriageway with proper acceleration and mirror checks for fast-approaching traffic.