Driving in Ireland as a United States National

Ireland drives on the left with narrow country roads, scenic coastal routes like the Wild Atlantic Way, and roundabouts at every turn. US, EU, and UK license holders do not need an IDP.

Key Things to Know First

No IDP Typically Required

Ireland generally accepts foreign licences for short-term visitors. Carry your original licence and passport at all times.

Drive on the Left — You Are Switching Sides

United States drives on the right, but Ireland drives on the left. Extra caution required at roundabouts, intersections, and after exits.

Tips for switching sides

Speed Signs Use km/h

United States uses mph, but Ireland uses km/h. Verify your GPS or navigation app is set to the correct unit.

Side-by-Side Comparison

Rule	United States	Ireland	Change?
Traffic side	Right-hand traffic	Left-hand traffic	Yes
Speed unit	mph	km/h	Yes
IDP required	—	No	No
Min. driving age	16	17	Differs
Emergency number	911	112 or 999	Different
Road difficulty	Easy	Moderate	—

Speed Limits in Ireland

Urban

50 km/h

Rural / Open road

80-100 km/h

Highway / Motorway

120 km/h

Speed limits in Ireland are posted in km/h (kilometres per hour). Quick reference: 50 km/h ≈ 31 mph · 100 km/h ≈ 62 mph · 130 km/h ≈ 81 mph.

Documents to Carry in Ireland

Original driving licence from United States — must be valid and unexpired
Passport or national ID — carry at all times while driving
Car insurance certificate — verify it covers Ireland before departure
Vehicle registration / rental agreement

Emergency Number in Ireland

112 or 999

Primary emergency number in Ireland. Save it before you drive.

Emergency numbers for all countries

Full Ireland Driving Guide

Road rules, toll system, fuel types, parking, regional quirks — everything you need for driving in Ireland.

Read the complete guide