Driving in the US on a Korean Licence — Same Side, but You'll Need the IDP

For South Korean drivers, the United States is an easy fit behind the wheel — you already drive on the right, so none of the mirror-image stress that hits Japanese or British visitors applies. The one job to do before you fly is paperwork, and it’s the kind that’s awkward to fix once you’ve landed.

Sort the permit at home

The South Korean licence is printed in Hangul, which an American rental clerk or police officer cannot read. That makes an International Driving Permit the practical necessity here — it’s the official English translation, issued by a Korean licence centre or driver’s-licence agency before you leave. You cannot get one in the US, and turning up at the rental counter with only the Korean card is the most common way Korean visitors lose their booking. Keep the IDP, the original licence and your passport together as a set. The exact state rule is laid out on the US driving guide and the Driving Permit Checker.

Right side, familiar reflexes

Korea and the US both drive on the right, so the car sits where you expect, roundabouts turn the way you know, and your overtaking and mirror habits carry over. The one new manoeuvre is the right turn on a red light — legal in most states once you’ve fully stopped — which Korean drivers will recognise in spirit but should use deliberately at first.

Faster signs in mph, looser alcohol law

US limits are posted in miles per hour: around 25 mph (40 km/h) in town, 55 mph (88 km/h) rural, and 65–75 mph (104–120 km/h) on interstates, broadly comparable to Korea’s expressways but state-dependent. A speeding ticket usually costs USD 50–200 — the Speeding Fine Calculator gives a quick figure. The drink-drive limit is 0.08 in most states, well above Korea’s strict 0.03, but US enforcement means arrest and court rather than a fine, so keep alcohol out of it entirely. Petrol is about $0.95/litre and emergencies are 911.