Driving in Australia as a United States National

Australia drives on the left with vast outback distances, unique wildlife hazards, and state-by-state rule variations. An IDP is required for most foreign visitors.

Key Things to Know First

IDP Required

Australia requires an International Driving Permit for foreign visitors. Obtain one in United States before departure.

How to get an IDP

Drive on the Left — You Are Switching Sides

United States drives on the right, but Australia 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 Australia uses km/h. Verify your GPS or navigation app is set to the correct unit.

Side-by-Side Comparison

Rule	United States	Australia	Change?
Traffic side	Right-hand traffic	Left-hand traffic	Yes
Speed unit	mph	km/h	Yes
IDP required	—	Yes	Yes
Min. driving age	16	17	Differs
Emergency number	911	000	Different
Road difficulty	Easy	Moderate	—

Speed Limits in Australia

Urban

50 km/h

Rural / Open road

100-110 km/h

Highway / Motorway

110-130 km/h

Speed limits in Australia 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 Australia

Original driving licence from United States — must be valid and unexpired
International Driving Permit (IDP) — required in Australia. Obtain from your national motoring association before travelling.
Passport or national ID — carry at all times while driving
Car insurance certificate — verify it covers Australia before departure
Vehicle registration / rental agreement

Emergency Number in Australia

000

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

Emergency numbers for all countries

Full Australia Driving Guide

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

Read the complete guide