You are following a truck and cannot see either of its side mirrors from your seat. According to the manual, what does this tell you?
-
A.
The truck driver cannot see you either. Correct
-
B.
Your headlights are aimed too high for the trailer.
-
C.
You have moved out of the truck's rear No-Zone.
-
D.
You are keeping the proper 4-second gap.
The answer is "The truck driver cannot see you either."
If you cannot see the truck's side mirrors from your seat, the truck driver cannot see you either. That is the manual's mirror check for the rear No-Zone. Choice D is the trap: the same 'Following a Truck' section gives a four-second stationary-object count as the spacing rule, and readers half-remember that count as proof they are already visible, when the mirror check is what the manual actually uses to decide it.
The traps in the wrong answers
B. Your headlights are aimed too high for the trailer.
Headlight aim has nothing to do with whether the truck's side mirrors are in your view; the mirror test is a daytime blind-spot geometry check, not a nighttime glare adjustment. This answer borrows the same page's night-driving instruction to dim headlights behind a truck and stretches it into a daytime mirror-aim complaint.
C. You have moved out of the truck's rear No-Zone.
Losing sight of the mirrors puts you deeper into the No-Zone, not out of it; the manual's rule runs one way, so no mirrors visible means the truck driver cannot see you. This answer inverts the mirror check, treating disappearance from the truck driver's view as extra distance rather than the marker of a blind-spot violation.
D. You are keeping the proper 4-second gap.
The four-second rule uses a stationary roadside object and a spoken count, not what you can see in the truck's mirrors. Following distance and mirror visibility are two separate checks in the same section. This answer half-remembers the four-second stationary-object count from the same page and treats meeting that count as proof of visibility, which is what the mirror check actually decides.
This question tests your knowledge of Sharing the Road in Pennsylvania. Source: Pennsylvania Driver Manual, "Sharing the Road With Trucks and Buses - Following a Truck," p.57..
Related Pennsylvania questions
- According to the manual, why should you avoid stopping quickly right after passing a bicyclist? →
- You are driving behind a school bus. It stops with its red lights flashing and its stop arm extended. How far must you stop from the bus? →
- The manual gives one exception to stopping for a school bus with red lights flashing and its stop arm extended. When does the exception apply? →
- You are following a truck at night. What does the manual tell you to do with your headlights? →
- A motorcycle ahead of you at an intersection has its turn signal flashing. What does the manual tell you to do? →
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.