Road signs

Irish Road Markings: Lines, Yellow Boxes and Arrows

53 signs, each with what it means and the rule behind it.

This page lists 53 road markings signs used on Irish roads, each with its code, its meaning and the rule behind it, from the Road Traffic (Traffic Signs) Regulations 2025, S.I. No. 433 of 2025. Source: Irish Statute Book, page dated 22 September 2025, checked on 15 September 2026.

Road markings

All 53 signs

The Traffic Signs Manual numbers a further 41 codes in this chapter. They are not prescribed in the Road Traffic (Traffic Signs) Regulations 2025, and the manual's own wording is not ours to reprint, so they are not listed here. Sources: Department of Transport, Traffic Signs Manual; Irish Statute Book, Road Traffic (Traffic Signs) Regulations 2025, S.I. No. 433 of 2025; checked on 2026-09-15

Distinct RRM (road marking) codes as amended by S.I. No. 205 of 2026

43 sign codes

Source: Irish Statute Book, Road Traffic (Traffic Signs) Regulations 2025, S.I. No. 433 of 2025, Schedule 6, dated 2025-09-22, checked on 2026-09-15

Distinct RPC (pedestrian crossing) codes in S.I. No. 433 of 2025

10 sign codes

Source: Irish Statute Book, Road Traffic (Traffic Signs) Regulations 2025, S.I. No. 433 of 2025, Schedule 5, dated 2025-09-22, checked on 2026-09-15

Road markings are traffic signs in Irish law, with their own codes and their own regulations. Every RRM marking and every RPC crossing is prescribed by the Road Traffic (Traffic Signs) Regulations 2025 (S.I. No. 433 of 2025, as amended by S.I. No. 205 of 2026), and the Road Traffic (Traffic and Parking) Regulations 1997 say what you must do when you reach one. The road markings chapter of the Traffic Signs Manual adds the M series, which no regulation prescribes, so some paint on an Irish road carries no legal reference at all.

White, yellow and orange paint

White marks where traffic goes: centre lines, lane lines, arrows, stop and yield lines, box junctions and the right-hand edge of a motorway. Yellow marks where you may not leave a vehicle, and it also marks the left-hand edge of a motorway carriageway.

Orange is temporary. At roadworks the centre lines, the lane line, the direction arrows and the hatched markings are laid in orange instead of white (Reg. 61), and article 27A of the Traffic and Parking Regulations 1997 gives those orange markings the same effect as the white ones they stand in for. Where both are visible, the orange ones are the ones to follow.

Markings that only exist in words

Many RRM codes have no drawing in the instrument. The yellow lines, the stop and yield lines, the no entry line, the box junction and the motorway edge lines are all described in the regulation text, sometimes down to the width of the line and the length of each segment.

That matters when you are checking an answer. For a marking with no schedule drawing, the regulation is the design, and the amending instrument is where the current wording of the motorway edge lines now sits.

A marking and a sign often work as a pair

The Regulations tie several markings to the sign above them. A bus lane needs the lane sign and the painted lane marking together, a cycle track needs the cycle track sign with a track symbol or an edge line, a stop sign is normally backed by a stop line, and a mini roundabout sign goes with the painted dome.

If a question shows you only the paint, look for the sign it belongs to before you answer, because the hours and the exemptions live on the sign and its plate.

  • Bus lane sign with the painted lane marking.
  • Cycle track sign with the track symbol, a continuous or broken edge line, or the square footprint markings.
  • Stop sign with the stop line, yield sign with the yield line.
  • Mini roundabout sign with the painted dome on the roadway.

Sources

Source: irishstatutebook.ie, Road Traffic (Traffic Signs) Regulations 2025 (S.I. No. 433 of 2025), checked on 2026-09-16

Source: irishstatutebook.ie, Road Traffic (Traffic Signs) (Amendment) Regulations 2026 (S.I. No. 205 of 2026), checked on 2026-09-16

Source: irishstatutebook.ie, Road Traffic (Traffic and Parking) Regulations 1997 (S.I. No. 182 of 1997), checked on 2026-09-16

Source: irishstatutebook.ie, Road Traffic (Traffic and Parking) (Amendment) Regulations 2012 (S.I. No. 332 of 2012), checked on 2026-09-16