What should you do if your car hydroplanes?

Ease off the accelerator, hold the steering wheel straight, and avoid hard braking until the tires regain contact. Hard inputs of any kind make hydroplaning worse.

Should you use high beams in fog?

No — low beams only. High beams reflect off fog droplets and bounce glare back at you, reducing what you can see.

When must you dim your high beams?

Commonly within about 500 feet of an oncoming vehicle and about 300 feet when following another vehicle. Exact distances vary a little by state; the principle — never blind another driver — doesn't.

Night, Weather, and Work Zones: Driving When Conditions Turn

Most driving is easy driving. The permit test cares about the rest: the rainy night, the fog bank, the orange cones, the moment the back of the car steps out of line. These questions have precise best answers, and several of them are counterintuitive — which is exactly why they're on the test.

Rain and hydroplaning

Roads are slickest in the first minutes of rain, when water floats accumulated oil off the surface. Hydroplaning — tires riding on water instead of pavement — can start around 35 mph with worn tires. If it happens: ease off the gas, keep the wheel straight, and don't brake hard. Braking on water you can't grip turns a drift into a spin.

Fog: the low-beam rule

Use low beams in fog, never high beams — high beams reflect off the water droplets and throw the glare back into your eyes. If fog gets too thick to drive safely, pull completely off the road, stop, and turn off your lights: taillights left on invite drivers behind to follow them as a guide, straight into your bumper.

Skids and blowouts

For a rear-wheel skid: off the gas, steer in the direction you want the front of the car to go, no slamming the brakes. For a tire blowout: grip the wheel, ease off the accelerator, keep the car straight, and brake gently only once you're under control. The test's pattern is consistent — the panicked response (hard braking, hard steering) is always wrong; the smooth response is always right.

Night driving and headlights

Don't overdrive your headlights: low beams show roughly 350 feet, and driving faster than lets you stop within what you can see makes speed itself the hazard. Dim high beams within about 500 feet of oncoming traffic and about 300 feet behind a vehicle you're following. When an oncoming driver won't dim theirs, look to the right edge of your lane — never into the lights.

Most states also require headlights whenever wipers are running in bad weather — a wipers-on, lights-on rule that several state tests ask about verbatim.

Work zones

Orange is its own alphabet: orange diamonds warn, and a flagger's hand signals carry the force of law. Fines double in work zones in most states, and lane-closure merges reward the calm zipper: merge early or take turns at the taper, but never dart down the closed lane. Watch for the end-of-queue trap — stopped traffic where drivers least expect it is the deadliest spot in a work zone.

Now make it stick

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Practice Safe Driving questions

Frequently asked questions

What should you do if your car hydroplanes?: Ease off the accelerator, hold the steering wheel straight, and avoid hard braking until the tires regain contact. Hard inputs of any kind make hydroplaning worse.
Should you use high beams in fog?: No — low beams only. High beams reflect off fog droplets and bounce glare back at you, reducing what you can see.
When must you dim your high beams?: Commonly within about 500 feet of an oncoming vehicle and about 300 feet when following another vehicle. Exact distances vary a little by state; the principle — never blind another driver — doesn't.