Renting a Car in the USA: Insurance, Tolls and Road Rules

For most of this site’s readers, the rental car is not a convenience, it is the trip: the national parks, the coastal highways and the Southwest loop simply do not work by train. And the rental counter is engineered, very well, to add money to your bill in three places (insurance, fuel and tolls) before you touch the steering wheel. Here is what to accept, what to decline, and the rules of the road that are genuinely different from home.

Qualifications, Age and Paperwork

Bring your passport and your full (not provisional) driving license, in your name, physical rather than a photo on your phone. A license printed in English (UK, Ireland, Australia, New Zealand) is accepted as-is in every state; an international driving permit (IDP) is a translation document that you only strictly need alongside a non-English license, though carrying one costs little and removes arguments. Book with a credit card in the driver’s name: debit cards are increasingly accepted with conditions (credit checks, deposits, proof of return travel), but the desk applies them inconsistently, and a credit card is also what unlocks the insurance route described below.

Age matters twice. Most companies rent to drivers 21 and over; a few states (New York and Michigan among them) force lower floors. Between 21 and 24 you will pay a young-renter surcharge, commonly $25-35 per day at the big national brands (fees and exact age floors vary by company, state and car class, so read the age policy of your specific rental before assuming). Some categories (premium cars, vans) are 25-plus regardless. Note that “25 to avoid fees” is no longer the universal rule it once was, but “under 25 means reading the fine print” absolutely is.

Insurance: The Three Parts and Who Needs What

The desk will present insurance as one big decision. It is three separate ones:

Coverage	What it does	Who needs to buy it
Damage waiver (LDW/CDW), about $15-30/day	Waives your financial responsibility if the car is damaged or stolen (it is a contract waiver, not insurance)	Anyone without credit-card CDW coverage; anyone who wants zero arguments
Liability (SLI supplement, up to about $1 million), roughly $10-15/day	Pays for damage and injury you cause to others; the rental includes your state’s legal minimum, which can be dangerously low	Almost everyone. The included minimum is thin, and foreign travel policies usually do not cover US liability
Personal accident and effects	Covers your own medical costs and belongings	Usually nobody: your travel insurance should already do this (see our health guide)

The damage waiver is where your credit card earns its annual fee. Many credit cards include rental CDW coverage (primary or secondary) when you decline the rental company’s waiver and pay the whole rental with that card; the exact terms live in your card’s benefits document, which you should read before the trip, not at the counter. UK and Irish domestic motor policies do not extend to US rentals, and travel insurance “car rental excess” add-ons typically cover only the excess, not the full vehicle value, so they are a top-up rather than a substitute.

The practical decision tree:

1. Check whether a card you hold includes rental CDW (look for “loss damage waiver” in the benefits PDF, and confirm it covers your country of residence; some US-issued cards do not serve non-residents).
2. If yes: decline the rental LDW at the counter, pay with that card, and photograph the car’s existing damage at pickup.
3. If no: take the rental LDW. It is expensive and it makes any argument impossible.
4. Either way, take the liability supplement unless you already hold a US auto policy; it is the cheapest meaningful coverage on the menu.
5. Decline the personal-accident add-on and the prepaid fuel plan (returning the car full costs a fraction).

Tolls: Cashless Roads and the Rental Program Trap

Almost every major American toll road has gone cashless. There is no booth: overhead gantries read your plate or a transponder and bill later. That creates the single most misunderstood rental charge in America.

If you drive a rental through a cashless gantry with no toll arrangement, the plate belongs to the rental company, which receives the bill and passes it to you plus an administrative fee per toll (often $5-15 on top of the toll itself). The rental companies sell you a way out: electronic toll programs (PlatePass on Avis and Budget, TollPass on Hertz and partners, similar brands elsewhere) that charge a flat convenience fee per rental day (typically around $6-11, varying by program and state, sometimes capped) plus the actual tolls, whether or not you use a toll road that day.

Choose deliberately:

1. Know your route. City trips (Miami, Orlando, Dallas, the Northeast) hit tolls constantly; Las Vegas, Los Angeles and most of the mountain West barely at all.
2. If your route is toll-dense and short, the rental program is the lazy-but-fine option. Ask at the desk exactly when coverage starts and stops (some start only after you drive through a lane).
3. If your route has a handful of tolls, skip the program and pay the plate yourself: most toll authorities post the bill online by plate number within days, and you settle it by card. Keep your rental agreement number handy.
4. Never just ignore a toll. The rental company’s admin fee arrives on your card months later, and unpaid tolls in some states compound into violations.

Rules of the Road That Surprise Foreigners

• Speeds are in miles per hour. Interstate highways run 65-75 mph (105-120 km/h) in much of the country; city streets 25-30 mph (40-48 km/h). Cameras are rarer than in Europe; state troopers are not.
• Right on red is legal almost everywhere. After a full stop, if there is no oncoming traffic and no “NO TURN ON RED” sign, you may turn right through a red light. New York City is the famous exception, where turning right on red is banned unless signed otherwise.
• Four-way stops are a negotiation. At a stop sign with four approaches, everyone stops, and the first to stop goes first; ties yield to the driver on the right. Hesitation confuses everyone; just claim your turn when it is yours.
• School buses stop everything. When a school bus flashes red lights and extends its stop arm, traffic in both directions must stop on undivided roads (behind-only on divided highways). The fines are severe and enforcement is real.
• HOV (carpool) lanes: the leftmost lane on big urban freeways is often restricted to vehicles with two or more occupants during posted hours. Solo driving in one earns a ticket.
• Pedestrians rule the crosswalk. Cars must yield to people at marked and unmarked crossings; California drivers treat this with almost comic deference. Do not jaywalk across eight lanes mid-block, though: jaywalking is enforceable in most places.
• You pump your own gas in 48 states (New Jersey legally requires an attendant, and Oregon is partially attendant-served). Prices are per gallon (3.8 liters), displayed without taxes-added-at-pump games.
• Turn signals, then left turns across traffic: at a green light, turning left means yielding to oncoming cars until a gap (or a green arrow) appears. Commit accordingly.

Parking and City Driving

Parking is where city trips pay for the car twice. Street meters in big downtowns run roughly $2-5 per hour with two-hour limits; garages run $20-60 per day; hotel valet parking in major cities commonly runs $40-70 per night on top of the room rate (check the hotel’s parking fee before booking; see our where-to-stay guide). Read curb signs obsessively: American parking signs are a dense shorthand of hours, permit zones and street-cleaning windows, and “NO PARKING THURSDAY 8-10 AM” means exactly that, enforced by tow truck.

The honest arithmetic: in New York, Boston, Washington DC, San Francisco and Chicago, a rental car is a liability (parking alone can exceed the daily rate); in Los Angeles, Miami, Las Vegas and every national-park itinerary, it is the tool. Pair this with our getting around overview for city-to-city logistics, and never leave bags visible in a parked car anywhere (see our safety guide).

Common Mistakes

• Buying everything at the counter. The insurance upsell can double the daily rate. Decide the CDW question at home, in your card’s benefits PDF, not at the desk under fluorescent lights.
• Saying yes to prepaid fuel. You pay for a full tank regardless of what you return. Refuel at a station near the drop-off instead.
• Activating a toll program for a toll-free route. If your itinerary has no gantries (Las Vegas, most of the West), the daily convenience fee is pure waste. Decide by route, not by anxiety.
• Ignoring a toll “violation” notice until months later. Rental companies bill unpaid tolls plus admin fees to the card on file long after the trip. Settle by plate online within days.
• Assuming 25 is the rental age. Most brands rent from 21 with a surcharge. If a driver in your group is 21-24, price that person in before booking.
• Treating a four-way stop like a roundabout. No filtering on the move: full stop, then first-come-first-served. Rolling stops (“California stops”) are ticketable offenses.
• Turning right on red without stopping in NYC. It is banned there by default, the opposite of everywhere else. Watch for the signs.
• Passing a school bus with lights flashing. Both directions stop. This is the fastest way to earn a memorable fine.
• Budgeting the rental without parking. $50/night hotel parking is a real line item in every big American city.