How does the manual say you should adjust your head restraint?
-
A.
So the top rests just above your shoulders
-
B.
So the top is at least as high as the top of your ears Correct
-
C.
So the top sits level with the base of your skull
-
D.
So the top lines up with the middle of your ears
The answer is "So the top is at least as high as the top of your ears"
The head restraint protects against neck injury only when its top sits at least as high as the top of your ears. A driver who learned the landmark as the middle of the ears, rather than the top edge, picks the midpoint answer instead.
The traps in the wrong answers
A. So the top rests just above your shoulders
Shoulder height is well below the manual's line, which uses the ears as the landmark. This answer reads the top of the seatback as the reference point, ignoring the ear-based rule.
C. So the top sits level with the base of your skull
That setting is too low to cushion the head in a rear-end crash. This answer confuses the restraint's required height with the base-of-skull spot it is meant to cushion.
D. So the top lines up with the middle of your ears
The manual calls for the top of the ears, not the midpoint. This answer splits the ear as a landmark, blurring a rule that names the top edge specifically.
This question tests your knowledge of Vehicle Equipment in Pennsylvania. Source: Pennsylvania Driver Manual, "Chapter 3 - Learning to Drive, Vehicle Checks: Preparing to Drive - Adjust head restraints," p.31..
Related Pennsylvania questions
- How often does the manual say your vehicle must have a safety inspection at an authorized inspection station? →
- You use the penny test to check tire tread. According to the manual, what result shows you have a safe amount of tread? →
- When does the manual say to check your tire pressure? →
- According to the manual, how should you set your side mirrors? →
- What does Pennsylvania law say about hanging an object from your rearview mirror? →
You just took one Pennsylvania question apart. The book does it for the whole test.
The Pennsylvania book unlocks a free companion: an adaptive study plan, progress synced across your devices, a denser laminate cheat sheet, and a test-day walkthrough. Verify your copy once, usually in seconds; there's nothing extra to buy.
$18.99 paperback, free companion included.