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Driving in Cambodia: 25 Tips for Americans (2026)

🛵Quick Answer

Driving in Cambodia is cheap, chaotic, and unlike anywhere in the US. Motorbikes rule the road, prices are in US dollars, and police sometimes stop foreigners for informal "fines." These 25 tips — starting with getting an IDP — will save you money and hassle.

Whether you self-drive, rent a scooter, or hire a driver, this is the on-the-ground playbook.

Pre-Trip Prep (Tips 1–5)

  1. Get your IDP first. Cambodia officially requires foreign drivers to carry an International Driving Permit with their US license. Apply via AAA or AATA (~$20) before you fly — it can't be issued in-country.
  2. Decide honestly how you'll get around. Most tourists hire a car with a driver for long distances and rent a scooter or take tuk-tuks locally. Self-driving a car is the least common choice.
  3. Check your license class for scooters. The IDP only covers a scooter if your US license carries a motorcycle endorsement. Without it, you're uninsured and technically illegal on two wheels.
  4. Download offline maps. Google Maps offline plus Maps.me; rural data is patchy and signs can be sparse.
  5. Sort travel medical insurance. Confirm it doesn't exclude scooter accidents — many policies do if you lack the right license endorsement.

At the Rental Counter or Scooter Shop (Tips 6–10)

  1. Present your IDP and US license together, unprompted. It sets the right tone and is your legitimate paperwork if anything comes up later.
  2. Never surrender your passport as a scooter deposit. Shops often ask; offer a copy or a cash deposit instead. Losing your passport to a rental dispute is a nightmare.
  3. Photograph the vehicle before you take it. Film every scratch and dent on a car or scooter so you're not charged for pre-existing damage.
  4. Test the essentials. Brakes, lights, horn, and tires on a scooter; check the spare and A/C on a car.
  5. Confirm prices and terms in USD, in writing. Rentals, fuel policy, and any deposit should be crystal clear before you ride off — everything is quoted in dollars.

On-Road Defensive Habits (Tips 11–15)

  1. Drive slow and predictable. Everyone reads your flow, not the rulebook. Sudden stops and jerky moves cause crashes; smooth and steady keeps the motorbike swarm reading you correctly.
  2. Expect motorbikes from every direction. They filter between lanes, ride on shoulders, and occasionally come against traffic. Scan constantly and assume nothing.
  3. Use the horn like locals do. A light tap means "I'm here," especially when overtaking. It's courteous communication, not aggression.
  4. Yield to anything bigger. Buses and trucks take the space regardless of formal right of way. Let them.
  5. Keep both hands and full attention engaged. No phone in hand — mount it for maps and set the route before moving.

City Driving: Phnom Penh & Siem Reap (Tips 16–20)

  1. Phnom Penh traffic is a full-contact sport. Intersections flow by negotiation, not signals. If you're not confident, use Grab or a tuk-tuk instead of driving yourself downtown.
  2. Tour Angkor by tuk-tuk. The classic, shaded, low-stress way to move between temples around Siem Reap. Hire one for the day (~$18–$30) and skip the parking and navigation.
  3. Park sensibly. Use guarded lots where available; attendants watch cars and scooters for a small fee. Don't leave valuables visible.
  4. Watch for one-way streets and market congestion. Signs may be in Khmer; when unsure, follow the flow of traffic and don't force a turn.
  5. Use rideshare apps. Grab and PassApp offer fixed-price cars and tuk-tuks in both cities — often the smartest way to avoid driving in the densest areas.

Highway & Rural Driving (Tips 21–25)

  1. Never drive intercity at night. This is the single most important tip. Rural roads are unlit, with livestock, ox-carts, unlit vehicles, and oncoming high beams. Finish every leg before dark.
  2. Fuel up in towns. Branded stations are reliable; rural roadside bottle-sellers are for emergencies only.
  3. Keep the expressway toll in USD. The Phnom Penh–Sihanoukville expressway is tolled; have dollars or a card ready.
  4. Add buffer time. Distances are short but average speeds are low. Markets, livestock, potholes, and road works slow everything down.
  5. Beware wet-season flooding. May–October rains flood roads fast, hiding potholes under standing water. Slow down and don't plow through deep water.

Cultural Things Americans Get Wrong

  • Right-of-way is negotiated, not enforced. US instincts about who "has" the intersection will get you stuck. Priority goes to size, speed, and confidence.
  • Lane markings are suggestions. Traffic flows around obstacles like water; don't expect strict lane discipline.
  • No turn-on-red culture. Treat lights as they're posted, but expect others to run them — proceed on green with caution.
  • Pedestrians don't have reliable priority. People cross anywhere; you watch for them, not the other way around.
  • USD is king. Prices, fuel, and fines are in dollars; riel is small change under $1. Carry clean, small bills.
  • Honking is polite. It signals presence, not anger. Don't take it personally, and use it the same way.

What to Do at a Police Stop

Traffic police sometimes wave over foreigners, especially on scooters. Handle it calmly and it stays minor:

  • Stay polite and relaxed. A friendly, unbothered attitude goes a long way; never argue aggressively.
  • Present your IDP and US license first. Having recognized documents removes the easiest pretext for the stop and often ends it quickly.
  • If a fine is claimed, ask for an official receipt. Requesting to pay the formal fine sometimes ends the matter with no payment at all.
  • Keep informal payments small. If you do settle on the spot, it's typically a few dollars to $20. Have small USD bills so you're not handing over large notes.
  • Don't hand over your passport. Your license and IDP are enough for a roadside check.

For the full breakdown of amounts and how this works, see our Cambodia driving fines page.

What to Do in an Accident

  • Check for injuries first. For medical emergencies, dial 119 (ambulance) or 117 (police); in practice, private hospitals in Phnom Penh and Siem Reap are the fastest care.
  • Move to safety if you can. Cambodian roads are busy and unforgiving; get out of active traffic.
  • Document everything. Photos of vehicles, positions, damage, and the scene protect you in any dispute.
  • Contact your rental provider and insurer promptly. Follow their process; don't admit fault on the spot.
  • Expect fault and blame norms to differ. Foreign drivers are sometimes assumed liable. Stay calm, involve police for anything serious, and loop in your embassy if needed.
  • Know that scooter injuries are common and serious. This is why a helmet and proper insurance matter more than any fine.

Useful Khmer Phrases for the Road

English is common in tourism, but a few Khmer words earn goodwill at stops, fuel stalls, and markets:

EnglishKhmer (spoken)
HelloSues-day (Suosdei)
Thank youAw-kohn (Orkun)
How much?Thlai poon-maan?
Petrol / gasSang-yang / benzin
PoliceNak-baal / police
Sorry / excuse meSom-toh
Where is...?...noev ai-naa?

Pronunciations are approximate; a friendly attempt is what counts.

Frequently Asked Questions

Start with the Right Foot — Get Your IDP Today

Tip #1 for driving in Cambodia costs $20 and takes minutes. It's officially required for foreign drivers and the cleanest way to handle a roadside stop.

Apply via AAAApply via AATA

More on Driving in Cambodia

Can I Drive in Cambodia?
License rules and requirements for Americans.
Renting a Car in Cambodia
Self-drive vs hire-a-driver, scooters, and insurance.
Cambodia Driving Rules
Speed limits, road signs, and right-of-way.
Cambodia Driving Fines
What tourists actually pay, including informal stops.
Cambodia Road Trip Guide
Routes, planning, and seasonal tips.
Browse All Countries →
Driving rules for every country.