Parking on a Hill: Which Way to Turn Your Wheels (and Why)

If there's one DMV question that has tripped up more test-takers than any other, it's the one about parking on a hill. It's been a staple of the exam for decades, and people still get it wrong at a remarkable rate. Not because it's genuinely difficult — but because there are three scenarios to remember, and under test pressure, they blur together.

Let's sort this out once and for all.

The Three Scenarios

When you park on a hill, you need to turn your front wheels in a specific direction depending on two things: which way the hill slopes and whether there's a curb. That gives you three possible situations:

• Uphill with a curb: Turn your wheels to the left — away from the curb.
• Downhill with a curb: Turn your wheels to the right — toward the curb.
• Any hill without a curb: Turn your wheels to the right — toward the edge of the road.

That's it. Three rules. But understanding why these are the rules is what makes them stick — and what keeps you from freezing on the exam.

The Physics: Why It Works This Way

The whole point of turning your wheels when parked on a hill is to control what happens if your car starts to roll. Brakes fail, parking brake slips, someone bumps you — whatever the cause, the car is now rolling downhill. Where should it go?

If there's a curb, you want the car to roll into the curb and stop. If there's no curb, you want the car to roll off the road and away from traffic, not into the driving lane.

Uphill with a curb: Your car is facing uphill. If it rolls, it rolls backward — downhill. Your wheels are turned left, away from the curb. As the car rolls backward, the turned wheels guide the front of the car toward the curb. The rear tire catches the curb, and the car stops. It's now wedged against the curb at an angle, going nowhere.

Downhill with a curb: Your car is facing downhill. If it rolls, it rolls forward. Your wheels are turned right, toward the curb. As the car rolls forward, the turned wheels steer the front tire directly into the curb. Contact. Stop. The car is lodged against the curb.

No curb: There's nothing to catch the car, so the goal changes. Instead of rolling into a curb, you want the car to roll off the road and away from traffic. Turning the wheels right — toward the edge of the road — means that whether the car rolls forward or backward, the turned wheels will guide it toward the shoulder and away from the lanes where other cars are driving. This applies whether you're facing uphill or downhill.

Memory Tricks That Actually Work

People have come up with dozens of mnemonics for this. Here are the ones that tend to stick:

The "Up-Up-and-Away" method: When you're parked uphill with a curb, turn your wheels up (away from the curb, which means left). For everything else — downhill or no curb — turn toward the curb or road edge (right). You only need to remember the one exception: uphill with curb = left. Everything else = right.

The gravity test: Mentally release your parking brake and imagine which direction your car rolls. Now ask: do I want it to hit the curb or go off the road? Turn the wheels so the answer is yes. If you can visualize the car rolling and the wheels steering it, you'll get the answer right every time.

The simple version: Downhill or no curb? Turn right. Uphill with curb? That's the only time you turn left. One exception, not three rules.

Don't Forget the Parking Brake

Turning your wheels is only half the equation. You should always set the parking brake when parking on a hill — always. The turned wheels are a backup plan. The parking brake is the primary plan. Use both.

If you're driving a manual transmission, you should also leave the car in gear — first gear if facing uphill, reverse if facing downhill. This uses engine compression as an additional brake. Automatic transmissions should be in Park, which locks the transmission, but the parking brake is still important as a secondary measure.

On the DMV exam, if there's an answer choice that includes "set the parking brake," it's almost always part of the correct answer. The DMV wants you to use every safety measure available.

What Happens If You Get It Wrong in Real Life

This isn't just an academic exercise. Cars roll away on hills with some regularity, and the results range from embarrassing to catastrophic.

A car that rolls into traffic on a busy street can cause a multi-vehicle accident. A car that rolls downhill and picks up speed can crash into buildings, pedestrians, or parked cars at the bottom. A car that rolls on a steep hill in San Francisco — where this is a particularly real concern — can become a runaway projectile on streets that drop at 20-30% grades.

This is also why many cities in hilly areas will ticket you for improper wheel positioning even if nothing bad happens. In San Francisco, it's a $74 fine for parking with your wheels not turned. The city knows what a rolling car can do on those hills, and they enforce it.

How the Exam Tries to Confuse You

The DMV doesn't write simple questions about this. They write questions designed to test whether you truly understand the concept or just memorized a phrase. Here are the common tricks:

They change the phrasing. Instead of "which direction should you turn your wheels when parking uphill with a curb," they might say "you are parking facing uphill on a street with a curb on your right side. Your front wheels should be turned..." The scenario is the same, but the extra detail about which side the curb is on can throw people off. The curb is always on your right when you're legally parked — that detail is irrelevant to the wheel-turning rule.

They add diagrams. Some exams show you a picture of a car on a slope and ask you to identify the correct wheel position. This is actually easier if you use the gravity visualization method — just imagine the car rolling and figure out which direction the wheels need to point.

They combine it with other rules. A question might ask what you should do when parking on a steep hill, and the correct answer includes turning the wheels and setting the parking brake and leaving the car in gear (or Park). An answer that only mentions one of these might be incomplete and therefore wrong.

They test the no-curb scenario separately. Many people remember the curb rules but blank on what to do without a curb. Remember: no curb, always turn right, toward the road edge. Uphill or downhill doesn't matter when there's no curb.

Practice It for Real

Here's something that'll help more than any mnemonic: go park on a hill. Find a residential street with a decent slope, park your car, and practice turning your wheels the correct direction for each scenario. Then get out, look at the wheels, and imagine the car rolling. Does it make sense? Would the car roll into the curb or away from traffic?

Doing it once in real life is worth doing it ten times in your head. The physical experience of turning the wheel, getting out, and seeing the angle locks it into your memory in a way that flashcards can't match.

And when you sit down for the exam and this question pops up — and it will pop up — you'll picture yourself standing on that hill, looking at those wheels, and the answer will be obvious.

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