Lesson 3 of 32 · Pennsylvania PennDOT Knowledge Test · Free

Make Yourself Visible

Stay out of blind spots, use headlights, and let others clearly see your moves.

Make Yourself Visible: practice questions and answers

These are the 15 quiz questions from this lesson for the Pennsylvania PennDOT Knowledge Test, with the correct answers and explanations. Try the quiz above first, then open a question to check yourself.

1

If you are in another driver's blind spot, you should:
  1. Move ahead or drop back to be visible. ✓ Correct
  2. Honk to alert the driver and keep going.
  3. Flash your headlights to signal your presence.
  4. Stay in position and remain alert.

Correct answer: A. Move ahead or drop back to be visible.

Moving ahead or dropping back repositions your vehicle into the other driver's field of vision, eliminating the blind spot risk entirely.

2

Which of the following is true about large trucks?
  1. They are made of many trailers, which make them more maneuverable than passenger vehicles.
  2. They have large blind spots, which makes it difficult for the truck driver to see other vehicles. ✓ Correct
  3. They have large and powerful emergency brakes, which gives them the capability to stop quickly.
  4. They have an elevated cab giving full view of surroundings.

Correct answer: B. They have large blind spots, which makes it difficult for the truck driver to see other vehicles.

Large trucks have massive "No Zones" on all four sides—front, back, and both sides—where a passenger vehicle can completely disappear from the driver's view.

3

Which blind spot is typically the largest on a large truck?
  1. Rear blind spot.
  2. Left-side blind spot.
  3. Right-side blind spot. ✓ Correct
  4. Front blind spot.

Correct answer: C. Right-side blind spot.

Since the driver sits on the far left, the right-side blind spot is the largest. It spans multiple lanes and the entire length of the trailer, easily hiding full-sized vehicles.

4

Avoid cutting abruptly in front of a large truck because:
  1. Truck drivers can't see directly in front of their vehicle.
  2. Trucks need more space and time to stop. ✓ Correct
  3. Trucks have wide blind spots on both sides.

Correct answer: B. Trucks need more space and time to stop.

A loaded semi-truck can take over 400 feet to stop from highway speeds. Abruptly cutting in removes the driver's essential safety cushion and stopping window.

5

Before merging in front of a large truck, you should:
  1. Signal early and merge even if you can't fully see the truck.
  2. Honk to alert the driver and merge quickly.
  3. See the driver's face in your side-view mirror first.
  4. See the truck's full front in your rearview mirror first. ✓ Correct

Correct answer: D. See the truck's full front in your rearview mirror first.

By ensuring the entire front of the truck is visible in your rearview mirror, you guarantee that you have left enough space for the truck to stop safely if traffic suddenly slows down.

6

If you are following a truck that swings left before making a tight turn at an intersection, you should remember that it is very dangerous to:
  1. Try to squeeze between the truck and the curb to turn right. ✓ Correct
  2. Apply your brakes until the truck has completed the turn.
  3. Violate the "4-second" following distance rule.
  4. Honk your horn at the truck driver.

Correct answer: A. Try to squeeze between the truck and the curb to turn right.

Trucks swing left to make room for a wide right turn. The gap that opens on the right is not a lane. If you pull into it, the truck can crush your vehicle against the curb as it completes the turn.

7

When driving behind a large truck on the freeway, you should:
  1. Follow farther back than you would behind a car. ✓ Correct
  2. Stay slightly to the left to see around it.
  3. Follow it the same way you would a small car.
  4. Tailgate closely so other drivers don't cut in between.

Correct answer: A. Follow farther back than you would behind a car.

Increasing following distance expands your field of vision, allowing you to see road hazards the truck blocks. It also ensures the truck driver can see you in their side mirrors, keeping you out of the rear "No-Zone."

8

A large truck turning right onto a two-lane road might:
  1. Need to swing wide to complete the turn. ✓ Correct
  2. Always remain fully in the right lane while turning.
  3. Complete the turn without extra space due to mirrors and cameras.

Correct answer: A. Need to swing wide to complete the turn.

Trucks often swing left before turning right to ensure the trailer clears the curb. Stay behind a signaling truck; never attempt to squeeze into the temporary gap created on its right side.

9

Which lights should you use when driving in fog, rain, or snow?
  1. High beams to see as far as possible.
  2. Hazard lights to stay visible to others.
  3. Low-beam headlights. ✓ Correct
  4. Daytime running lights.

Correct answer: C. Low-beam headlights.

Low-beam headlights are the safest choice because they provide essential visibility for you while also turning on your tail lights so that drivers behind you can see your vehicle.

10

Why shouldn’t you drive with only fog lights or parking lights in fog or smoke?
  1. They’re only for use at night.
  2. Fog lights might blind oncoming drivers.
  3. They don’t make you visible enough to other drivers. ✓ Correct
  4. Parking lights drain the car’s battery too quickly.

Correct answer: C. They don’t make you visible enough to other drivers.

Parking lights are too dim, and fog lights are positioned too low to be easily seen by other drivers at a distance. To ensure others can see your vehicle in heavy fog or smoke, you must use your standard low-beam headlights.

11

If fog or smoke becomes too thick to continue driving, you should:
  1. Slow to a crawl and keep going.
  2. Stop in your lane and wait.
  3. Turn on high beams and follow the vehicle ahead.
  4. Pull off the road completely and turn on emergency flashers. ✓ Correct

Correct answer: D. Pull off the road completely and turn on emergency flashers.

If visibility drops to near zero, the safest action is to pull as far off the paved road as possible, turn off your driving lights, and turn on your emergency flashers so you aren't mistaken for a moving vehicle.

12

Extra space in front of a large truck is necessary to:
  1. Minimize the truck's blind spot.
  2. Give the truck enough distance to stop. ✓ Correct
  3. Allow other vehicles to merge safely.
  4. Give the driver time to signal and change lanes.

Correct answer: B. Give the truck enough distance to stop.

Due to their considerable weight, large trucks require significantly more distance to stop than passenger vehicles. Extra space in front provides the stopping distance needed to avoid a collision if traffic suddenly slows.

13

If a large vehicle like a truck or a bus swings wide left at an intersection with its right signal on and you also want to turn right, you should:
  1. Turn right before the large vehicle does.
  2. Wait until the large vehicle completes its turn. ✓ Correct
  3. Squeeze between the vehicle and the curb.
  4. Honk and proceed alongside the large vehicle.

Correct answer: B. Wait until the large vehicle completes its turn.

Large vehicles must often swing left to create enough clearance for their rear wheels to navigate a right-hand corner; even though the vehicle is moving left, its right signal indicates it is about to turn across your path.

14

Following distance behind a large vehicle should be increased to:
  1. Get a clearer view around its sides. ✓ Correct
  2. Avoid other drivers merging in behind it before passing.
  3. Prevent being pulled into the vehicle's slipstream.
  4. Make the vehicle's backup lights more visible.

Correct answer: A. Get a clearer view around its sides.

By staying further back, you open up your field of vision, allowing you to see around the large vehicle and spot upcoming traffic signals, road hazards, or brake lights ahead of the truck.

15

In a roundabout, large vehicles need extra space because they:
  1. Have right of way over smaller vehicles.
  2. Take up more space but follow the same path as smaller vehicles.
  3. May swing wide into adjacent lanes. ✓ Correct
  4. Can accelerate faster than smaller vehicles.

Correct answer: C. May swing wide into adjacent lanes.

Because of their length, large vehicles often need to use the full width of the roadway—including both lanes—to successfully navigate the tight curves of a roundabout without the trailer climbing over the curb.

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