Taiwan’s freeways are orderly; the difficult part often begins after the exit. Scooters fill urban blind spots, mountain roads lose visibility in fog, and storm damage can close a route that looked normal when the hotel was booked.
Start with the Taiwan driving overview. This guide handles the working details of Taiwan car rental: licence acceptance, rental records, ETC tolls, scooter-heavy traffic and the road check that should happen before every mountain day.
Confirm the licence before paying
Taipei City Motor Vehicles Office says a visitor staying 30 days or fewer may drive with an eligible International Driving Permit without registering it locally. Stays longer than 30 days require IDP registration, and recognition is based on reciprocity.
That means “I have an IDP” is not the final check. Send the rental company the issuing country, convention shown on the permit, vehicle category and travel dates. Carry the original IDP with the original domestic licence and passport.
Keep the rental company’s answer
Ask for written confirmation that the branch will release the booked vehicle against those documents. A comparison website’s general wording is weaker evidence than the pickup branch’s reply.
Add every driver to the agreement. Check whether the contract excludes unpaved roads, specific mountain roads, typhoon travel, roof damage, tyres, wheels or the underbody.
Photograph the collection record
Record each body panel, bumper, windscreen and wheel in daylight. Include the fuel gauge, odometer, ETC equipment and emergency kit. Save the branch and roadside-assistance numbers offline.
Treat scooters as moving blind spots
Taiwan drives on the right. In towns, scooters may wait in marked boxes ahead of cars, filter alongside a queue or approach on the inside as you prepare to turn.
Signal early, hold a predictable line and check the mirror twice before moving laterally. A navigation instruction is not a reason to cross several lanes at once; continue to the next safe turn.
Read the road surface as well as the sign
The “慢” marking means slow. Lane arrows, scooter boxes and turning restrictions can be painted on the road where a driver concentrating on an overhead map prompt might miss them.
Pedestrian crossings deserve the same deliberate scan. Reduce speed before the crossing rather than braking after someone steps out.
Leave city sightseeing to transit
Collect outside the centre when the route allows it. Rail and metro are usually simpler for Taipei or central Taichung, while the rental car earns its cost on the rural portion.
Let the rental company settle ETC
National freeways use distance-based electronic toll collection. Gantries identify the vehicle; there is no cash booth where a visitor can stop and pay each passage.
The Freeway Bureau publishes the charging rules and current traffic information. For a rental, ask whether the car has an eTag, how the company receives the charges and whether it adds an administration fee.
Do not register the plate yourself
The plate belongs to the rental fleet. Opening a personal ETC account or changing the vehicle record can interfere with the owner’s account. Keep the contract’s toll clause and compare the final invoice with the route used.
Holiday traffic measures can differ from ordinary weekdays. Check the Freeway Bureau notice for the actual dates rather than copying a toll estimate from an old itinerary.
Keep tolls separate from parking
A later rental charge may combine tolls, parking tickets and an administration fee. A simple driving log with the date, freeway, approximate entry and exit makes the invoice easier to question.
Check the numbered road before climbing
Taiwan’s Highway Bureau provides live information for provincial highways, including incidents, construction and disaster controls. Save the 168 service before departure and match each notice to the highway number and kilometre marker.
Mountain weather can change faster than a city forecast suggests. Rain, fog, falling rocks or a damaged retaining wall can bring timed openings or a full closure.
Use the main approach
Choose the signed provincial highway recommended by the destination authority. A map may offer a narrow industrial or county road as a shorter alternative without explaining its width, surface or current access.
If an official barrier conflicts with the route on the phone, the barrier wins. Do not follow another car around it or assume a local-only road is a public detour.
Set a turn-around time
Work backwards from sunset and the lodging’s last check-in. Turn back when fog removes stopping distance, rain carries material onto the lane or a delay makes a night descent likely.
Descend without riding the brakes
Select a lower gear before the gradient steepens. Let engine braking hold a steady speed and use the brake pedal in firm, separate applications rather than keeping light pressure on it.
Stay inside the lane and expect a bus, cyclist or maintenance vehicle after a blind bend. Stop only at a signed viewpoint or car park, never on the traffic side of a narrow shoulder.
Build a weather fallback
Pair each mountain day with a lowland option. Taiwan’s rail network makes it possible to leave the car parked and use a city or lakeside day when the high road is closed.
The mountain driving guide covers gears, bends and stopping choices in more detail.
Return with a clean record
Use an attended return where possible. Photograph the body, glass, wheels, odometer and fuel gauge, and keep toll and parking records until the deposit has cleared.
The Sun Moon Lake and Alishan route applies these checks to a seven-day plan with two mountain bases.
Sources and review date
Licence requirements were reviewed on August 17, 2026 against Taipei City Motor Vehicles Office’s IDP registration guidance. Freeway planning was checked against the Freeway Bureau’s English information service and ETC charging rules. Provincial-road checks use the Highway Bureau’s 168 live service and Happy Road description. Reconfirm reciprocity, the assigned vehicle, toll handling and the numbered road for your dates.