Across thousands of practice test sessions on Permit Ready, certain questions get missed at 60-80% rates. Here are the top offenders, what people pick, and the actual right answer.

1. Following distance at 55 mph

Common wrong answer: "2 seconds" Correct: 3-4 seconds in good conditions; 6+ seconds in rain, fog, or at night.

Why it tricks: drivers learn the "2-second rule" from old training material. The current MUTCD-aligned standard is 3-4 seconds for cars and 4+ for larger vehicles.

2. Stopping distance at 60 mph

Common wrong answer: "About 100 feet" Correct: Roughly 240 feet — perception (66 ft) + reaction (66 ft) + braking (108 ft).

Why it tricks: people guess based on car length, not the full reaction-plus-braking total.

3. When you can pass on the right

Common wrong answer: "Never" Correct: Allowed when (a) the lane to the right is paved, (b) you don't leave the roadway, and (c) the vehicle ahead is turning left.

Why it tricks: "Pass on the left" is the universal rule, but right-side passing is allowed in specific situations every state recognizes.

4. Yellow light meaning

Common wrong answer: "Speed up to clear the intersection" Correct: Stop if you can do so safely. If you're too close to stop, proceed with caution.

Why it tricks: real-world driving rewards "speeding up to beat the light," but the test requires you to stop.

5. Stop sign — what you yield to

Common wrong answer: "Yield to traffic from the left only" Correct: Yield to all cross traffic AND any pedestrians.

Why it tricks: people forget pedestrians. Stop signs cover all directions of cross traffic plus crosswalk users.

6. Right of way at a 4-way stop

Common wrong answer: "Whoever's biggest goes first" Correct: First to fully stop goes first. If two arrive simultaneously, the one on the right has right of way.

Why it tricks: drivers default to "the bigger truck wins." The legal rule is purely about arrival order.

7. Hand signals

Common wrong answer: Confusing "left turn" and "stop" Correct: Left arm straight out = left turn. Up = right turn. Down = stop or slow.

Why it tricks: rarely used in modern cars but still tested. Learn the road sign and signal reference.

8. School bus with flashing red lights

Common wrong answer: "Pass slowly on the left" Correct: Stop in BOTH directions on a road without a divided median. On divided highways, only the same-direction lanes must stop.

Why it tricks: state laws vary slightly on divided medians, but flashing red = stop is universal.

9. Headlights when driving

Common wrong answer: "Only at night" Correct: Use headlights from sunset to sunrise, in rain, fog, or whenever visibility is under 500-1000 ft (varies by state).

Why it tricks: many states require daytime headlights in rain — drivers forget this rule until tested.

10. Right of way for emergency vehicles

Common wrong answer: "Stop wherever you are" Correct: Pull right and stop. Never block intersections. Stopping in an intersection is itself a violation.

Why it tricks: panic. Drilling this answer mentally before the test prevents fumbling on the road.

Why missing these matters

Each state allows 4-8 wrong answers depending on test length. Missing 3 of these 10 above the test-average spread can flip a pass into a fail.

Drill them now

Spin up our practice tests and look out for these questions. Mark the ones you miss into your Challenge Library — you'll see them again on test day with high probability.

Good luck.