New York CDL — General Knowledge practice
New York CDL — General Knowledge: Signals & Pavement Markings practice test
How to read traffic signals, lane lines, and pavement markings — including yellow and white lines, arrows, and flashing lights.
Content reviewed against official driver handbooks · August 12, 2026
10 questions · pass with 8 correct. You get instant feedback and an explanation after every answer.
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10 sample Signals & Pavement Markings questions with the correct answer, a short explanation, and the official handbook reference. Read through them, then take the quiz above.
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1. Turning on your headlights during the day, in rain, in fog, or at dawn and dusk mainly helps by:
Correct answer: Making your vehicle easier for others to see
Using your lights in low-visibility conditions makes your vehicle easier for others to see. Seeing and being seen is a core part of communicating your presence on the road.
2. When you plan to turn, you should signal:
Correct answer: Early and well before the turn, and keep signaling through it
Signal early and continuously — well before you turn — and keep signaling through the turn. Because trucks move and stop slowly, other drivers need extra warning of what you intend to do.
3. You must drive much slower than the traffic around you because of a steep hill or a heavy load. You should:
Correct answer: Turn on your four-way emergency flashers to warn traffic behind you
When you must travel well below the speed of other traffic, warn the drivers behind you by turning on your emergency four-way flashers where legal, so they have more time to notice you and slow down.
4. A white line is painted across the pavement just short of a set of railroad tracks. While a school bus sits stopped at that crossing, the bus must:
Correct answer: Keep its front bumper behind the line
That stop line marks how far forward you may go. The nose of the bus stays behind it while you look and listen; where no line is painted, you stop before reaching the crossbuck instead.
5. A large painted X with the letters RR appears on the pavement ahead of you, together with a no-passing line. These markings mean:
Correct answer: The same thing the round advance warning sign for a rail crossing means
Pavement markings carry the identical message as the yellow advance sign: rails are coming, so slow, look, listen and be ready to stop. On two-lane roads the marking is paired with a no-passing zone.
6. How often should you check your mirrors while driving?
Correct answer: Regularly, and especially before lane changes, turns, and merges
Check your mirrors regularly to track the traffic around you, and especially before changing lanes, turning, or merging, or when you suspect a problem with a tire or the cargo. Remember that mirrors have blind spots.
7. After you finish a turn or lane change in a vehicle without self-canceling signals, you should:
Correct answer: Turn the signal off yourself
Turn your signal off yourself once the maneuver is done. A signal left blinking can make other drivers think you are about to turn or change lanes, and they may pull into your path.
8. When should you use the horn on a commercial vehicle?
Correct answer: Only when needed to warn others and prevent a crash
Use the horn only when you need it to warn others and avoid a crash. A horn can startle other drivers or pedestrians, or frighten an animal near the road, so sounding it needlessly can create the very hazard you were trying to avoid.
9. You are about to slow down where drivers behind you might not expect it. A good way to warn them is to:
Correct answer: Tap the brake pedal to flash your brake lights early
Tap the brake pedal a few times to flash your brake lights before you slow. This alerts following drivers early, which matters because a fully loaded truck slows and stops gradually.
10. A driver behind you wants to pass and you can see the road ahead is clear. Should you wave or flash a signal telling that driver to go?
Correct answer: No — never signal another driver when to pass
Waving somebody past makes you responsible for what happens next. If the pass goes wrong you can be blamed, and the bill can run into thousands, so leave that decision to the other driver.
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