This guide covers driving in the Republic of Ireland: adjusting to the left if you're not from the UK, licences and hire cars, road types and speed limits, tolls including Dublin's barrier-free M50, and the Wild Atlantic Way. Public transport links the cities, but for the west coast, Kerry and Connemara you need a car.
Left-Hand Driving: Adjusting Safely
Ireland drives on the left with the steering wheel on the right. For visitors from continental Europe or North America, this is the single biggest adjustment. Ireland is a forgiving place to learn, because traffic is light outside Dublin.
Tips for Your First Day
- Collect your car at the airport, not in the city. Airport roads are well-signed and lead directly to motorways, giving you time to adjust before encountering complex junctions.
- Stay left, look right. Your biggest danger is drifting to the right, especially after stops, on empty roads, or early in the morning when your muscle memory takes over. Place a sticky note on the dashboard as a reminder.
- Roundabouts flow clockwise. Enter from the left, give way to traffic already on the roundabout (coming from your right), and exit left.
- The gear stick is on your left. If you are not comfortable with a left-hand manual gear change, book an automatic. The surcharge is worth it.
- Wing mirrors are your friend. You will initially misjudge your position on narrow roads. Use your left wing mirror constantly to check your distance from the verge.
Avoid driving in Dublin on your first day. Collect your car, head west or south immediately, and get comfortable on quieter rural roads. Return to Dublin (if you must drive there at all) once you are fully adjusted to left-hand traffic.
Licence, Insurance & Rental Requirements
Licence
- EU/EEA licences: Valid without restriction.
- UK licences: Fully valid in the Republic of Ireland (and Northern Ireland, which is part of the UK).
- USA, Canada, Australia: Valid for up to 12 months. An IDP is not legally required but recommended if your licence is not in English.
- Other countries: Check with your rental company. An IDP is generally needed alongside your national licence.
Rental Tips
- Book early for summer. Ireland is a hugely popular road trip destination from June to August, and rental availability tightens quickly. Book at least 2-3 months ahead for summer.
- Automatic cars: Limited supply in Ireland, where most people drive manual. Book well in advance if you want an automatic, and expect to pay 20-40% more.
- Size matters: Choose the smallest car you are comfortable with. Irish rural roads are narrow, and large SUVs struggle in places where a small hatchback fits easily.
- Cross-border: If you plan to drive into Northern Ireland, confirm your rental agreement covers it. Most companies allow it, but some require notification.
- Excess insurance: Irish rental CDW excess can be EUR 1,500-2,500. Consider buying excess reduction insurance from a third party (iCarhireinsurance, Insurance4carhire) for around EUR 3-5 per day instead of EUR 15-25 per day from the rental desk.
Road Types & Conditions
Irish Road Classification
- M roads (Motorways): Dual carriageway, 120 km/h limit. Connect Dublin to Cork (M8), Galway (M6), Limerick (M7), and Waterford (M9). Well-maintained and relatively quiet by European standards.
- N roads (National roads): Primary routes, quality varies from dual carriageway to single carriageway. Speed limit 100 km/h on national primary roads; national secondary roads were cut to 80 km/h in February 2025. Always follow the signs.
- R roads (Regional roads): The backbone of rural Ireland. Two lanes, often without a centre line, with variable surfaces. Speed limit 80 km/h, though you will rarely reach that on winding sections.
- L roads (Local roads): Single-track lanes, often with grass growing in the middle and hedgerows right up to the road edge. The default limit on rural local roads was cut from 80 to 60 km/h in February 2025.
Narrow Roads and Passing
On single-track roads, oncoming traffic requires one vehicle to pull into a passing place (a widened section). The convention is that the vehicle closest to a passing place pulls in. If the passing place is on your left, pull into it. If it is on your right, stop opposite it and let the other vehicle pull in; don't cross the road to use it. A friendly wave of thanks is customary and expected.
Watch for tractors, livestock, and cyclists on narrow rural roads, especially in farming areas during spring and autumn. Irish farmers sometimes move cattle along the road between fields. Be patient and wait.
Toll Roads & the M50 eFlow System
Ireland has a small number of toll roads. Most are simple barrier tolls where you pay cash or card at a booth. But one toll is uniquely confusing for visitors.
Standard Toll Roads
- M1 (Gormanston)
- M3 (Dunshaughlin)
- M4 (Kilcock)
- M7/M8 (Portlaoise)
- M8 (Fermoy)
- N6 (Galway)
- N25 (Waterford)
- Dublin Port Tunnel: charges vary by direction and time of day, and are much higher at peak times
The barrier tolls are each a few euros for a car (roughly EUR 2-3.50), and prices rise most years.
The M50 eFlow Barrier-Free Toll
The M50 is Dublin's orbital motorway and the busiest road in Ireland. It has a barrier-free toll point at the West Link (between junctions 6 and 7). There is no booth and no way to pay on the road. Cameras photograph your licence plate and you must pay online or by phone.
- Cost: a few euros per trip for cars without a tag (check eflow.ie for the current rate).
- Deadline: You must pay by 8 PM the following day.
- How to pay: Online at eflow.ie or at Payzone outlets in shops.
- Penalty: Failure to pay adds a penalty of around EUR 40, rising to well over EUR 100 if it stays unpaid.
- Rental cars: Most rental companies handle M50 tolls automatically and charge your card with an administration fee (typically EUR 1-3 per crossing on top of the toll). Check your rental agreement.
If your route passes through Dublin, you will almost certainly use the M50. Set a phone reminder to pay the eFlow toll that evening. It is easy to forget, and the penalty is steep.
The Wild Atlantic Way
The Wild Atlantic Way is a 2,500 km signposted driving route along Ireland's entire western seaboard, from the Inishowen Peninsula in Donegal to Kinsale in Cork. It is one of the longest defined coastal driving routes in the world and the single best reason to rent a car in Ireland.
Highlights by Section
- Donegal (north): The sea cliffs at Slieve League (about three times the height of the Cliffs of Moher), empty beaches, and the wild Malin Head, Ireland's most northerly point.
- Sligo and Mayo: Surfing beaches, Croagh Patrick and Achill Island.
- Connemara and Galway: Bog landscapes, stone-walled fields, Gaeltacht (Irish-speaking) villages, and the Aran Islands visible offshore.
- Clare: The Cliffs of Moher, the Burren's lunar limestone landscape, and traditional music sessions in Doolin.
- Kerry: The Ring of Kerry, the Dingle Peninsula, Slea Head Drive, and the Skellig Islands (filming location for Star Wars).
- Cork: Mizen Head (Ireland's most south-westerly point), Beara Peninsula, and the foodie town of Kinsale.
The full route takes 10-14 days at a comfortable pace. For shorter trips, the Kerry and Clare sections are the most rewarding and can be covered in 3-5 days from Galway or Cork. From Dublin, it's about two and a half hours on our Dublin to Galway route. Plan your Wild Atlantic Way trip.
Speed Limits, Rules & Practical Tips
Speed Limits
- Motorways: 120 km/h
- National primary roads: 100 km/h
- National secondary and regional roads: 80 km/h
- Rural local roads: 60 km/h (since February 2025)
- Urban areas: 50 km/h (30 km/h in some residential zones)
Other Rules
- Alcohol limit: 0.05% BAC (0.02% for learner and professional drivers). Random breath testing is common.
- Seatbelts: Compulsory for all occupants.
- Mobile phones: Hands-free only. Holding a phone means a fine and penalty points.
- Speed cameras: Operated by GoSafe in marked vans. Common on national roads.
- Fuel: Widely available, including in small towns. Prices are approximately EUR 1.70-1.90 per litre. Many rural stations close by 7-8 PM, so fill up during the day.
- Signage: Distance signs are in kilometres in the Republic of Ireland but in miles in Northern Ireland. Speed limits follow the same pattern. This catches many visitors off guard when crossing the border.
Explore Dublin before or after your road trip, or jump straight to the coast from the airport.
Frequently asked questions
Should I drive in Dublin?
No, if you can avoid it. Dublin traffic is heavy, parking is expensive (EUR 3-6 per hour in the city centre), and the one-way system and bus lanes are confusing. Dublin is best explored on foot, by tram (Luas), or by bus. If you are starting a road trip from Dublin, collect your rental car at the airport and head out of the city immediately. Return it at the airport before your final night in Dublin.
Is it safe to drive on the left as a first-timer?
Yes. Most visitors adjust within a few hours. The biggest risk periods are your first morning (when you are tired and reverting to habit), after stopping for fuel, and on empty rural roads where there is no other traffic to remind you. Book an automatic to reduce cognitive load, and drive an hour on quiet roads before tackling anything complex.
Can I drive from the Republic of Ireland into Northern Ireland?
Yes, and you will barely notice the border. There are no checkpoints or customs stops. The road surface changes slightly, signs switch from kilometres to miles, and speed limits switch from km/h to mph. Mobile phone roaming may switch to a UK network (check your plan). Most rental companies allow cross-border travel with no extra charge, but confirm when booking. Travel insurance should cover both jurisdictions.