Road markings in Ireland and what they mean

Why do road markings matter on the driving test?

Testers assess how you comply with lights, signs and road markings. The RSA lists non-compliance with traffic controls, such as signs, markings and lights, among the common reasons candidates are unsuccessful. Markings also tell you where to position the car, and road position is another assessed heading.

Where a marking is confusing or wrongly placed, the marking guidelines tell the tester to say which way to go, and no fault is recorded in that case.

The markings you meet most

How do centre lines work?

A continuous white line along the road centre divides two streams of traffic. You keep to its left, and you cross it only in an emergency or to get into a property or side road. The same line also rules out a U-turn. The Rules of the Road lists a continuous centre line as one of the markings that prohibit turning round.

A short broken line is permission with conditions. You may cross when it is safe, for example to overtake a cyclist or a parked vehicle. Look ahead first. If the line changes to continuous, you lose the permission.

When the two sit side by side, one broken and one continuous, the rule is about which is nearest. A broken line on your side lets you cross when safe. A continuous line on your side does not.

What do hatched markings mean?

Hatched markings are white diagonal stripes painted on the road. If you see them, you must not enter the area they cover. They are also used to separate opposing traffic in central median islands, so you can find them in the middle of a road as well as at junctions.

Hatching is not the same as a yellow box. A box sits across a junction and you may enter it under conditions. Hatching has no entry condition at all.

What do single and double yellow lines mean?

Double yellow lines mean no parking at any time. A single yellow line has an information plate nearby, and the two together mean no parking during the times shown. Outside those times you may park on a single yellow line, as long as you do not cause an obstruction or break another rule below. Read the plate every time: the hours differ from street to street.

Other places you must not stop or park, even with no sign or line:

• Within 5 metres of a road junction, unless parking spaces are clearly marked.
• On either side of pedestrian lights, or a pelican or zebra crossing, where white or yellow zig-zag lines are marked.
• 15 metres before or 5 metres after a pedestrian crossing or traffic lights.

Can you use bus lanes and cycle tracks?

Bus lanes normally operate from 7am to 7pm or in peak hours. Outside those times all traffic may use them. The information plate gives the exact times, so check it. You must not park in a with-flow bus lane during its hours, or in a contra-flow bus lane at any time.

A contra-flow bus lane runs against the traffic beside it. It is generally reserved for buses, with limited exceptions where signs say so.

A cycle track with a continuous white line along it is mandatory. You may not drive into or across it, except to enter or leave a place or a side road. Test marking lists bus and cycle lanes under traffic controls.

What is an advanced stop line?

At some traffic lights, cyclists get a shaded waiting box ahead of the cars. As a driver you must wait behind the first white line you reach and not enter the shaded area. When the lights turn green, give cyclists enough time and space to move off.

How do I learn road markings?

Study them in groups, as above: centre lines, hatching, yellow lines, bus and cycle lanes, then lights. Drive your local roads and name each marking aloud as you reach it. Turas Study decks cover road signs and Rules of the Road questions. The plan page shows how to build them into your weeks before the test.

Marking rules also tie into other topics. Lane arrows decide your lane on a roundabout, and the speed limits guide covers the signs you read alongside the lines.