Hawaii CDL — General Knowledge practice
Hawaii 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
13 questions · pass with 10 correct. You get instant feedback and an explanation after every answer.
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12 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. After the signal-light check in step 6 of the seven-step inspection, you get back in the cab. What do you do about the lights?
Correct answer: Turn off the lights that are not needed for driving
Once the signal lights have been checked, the manual has you turn off any lights you do not need for driving, check for required papers, and secure loose articles in the cab before starting the engine.
Source: Hawaii Commercial Driver License Manual — Section 2.1.5, Seven-step Inspection Method
2. Step 5 of the seven-step inspection starts at the front of the vehicle. What do you confirm there before you push the dimmer switch?
Correct answer: That the low beams are on and both four-way flashers are working
Before leaving the cab you switched on the low beams and the four-way flashers. At the front you confirm that those are working, and then you push the dimmer switch to check the high beams.
Source: Hawaii Commercial Driver License Manual — Section 2.1.5, Seven-step Inspection Method
3. You have no choice but to keep driving in fog. Why does the manual tell you to turn on your four-way flashers?
Correct answer: So drivers coming up behind you have a better chance of noticing your vehicle sooner
In fog the manual says to use low beams and fog lights and to switch on the four-way flashers. The flashers give drivers closing in from the rear a quicker chance to notice your vehicle.
Source: Hawaii Commercial Driver License Manual — Section 2.12, Driving in Fog
4. On the inspection test, light and reflector checks cover more than whether they are clean and working. What else must you verify?
Correct answer: That each one is the correct color
The inspection includes verifying color. Clearance lights, for example, are red at the rear and amber elsewhere, and reflectors are red on the rear and amber everywhere else.
Source: Hawaii Commercial Driver License Manual — Section 11.1.2, Cab Check/Engine Start
5. The road test scores how you use your turn signals. Which of these is NOT part of that standard?
Correct answer: Leave the signal on for a block after a lane change so others know you moved
The standard is to use the signals properly: turn them on when required and at the right time, and cancel them once the turn or lane change is finished. A signal left blinking after the move is over is the opposite of what is asked.
Source: Hawaii Commercial Driver License Manual — Section 13.1.17, Use of Turn Signals
6. When you set out reflective triangles to protect an accident scene, what does the manual say to make sure of?
Correct answer: That approaching traffic will spot them early enough to steer clear of the crash
Protecting the area means putting on your flashers and setting out reflective triangles. The triangles only help if approaching drivers see them soon enough to avoid running into the scene.
Source: Hawaii Commercial Driver License Manual — Section 2.20.1, Protect the Area
7. On the vehicle inspection test, how must you check the brake lights, turn signals and four-way flashers?
Correct answer: Each function has to be checked separately
A note in the inspection section says the brake lights, the turn signals and the four-way flashers each need their own check. Turning everything on at once would not show that each one works.
Source: Hawaii Commercial Driver License Manual — Section 11.1.2, Cab Check/Engine Start
8. Why does the manual say clean, working turn signals and brake lights matter even more at night?
Correct answer: At night they become even more important for showing other drivers what you plan to do
In the dark, turn signals and brake lights carry even more of the job of telling other drivers what you are about to do. The manual wants them clean and in working order.
Source: Hawaii Commercial Driver License Manual — Section 2.11.4, Vehicle Factors
9. Your truck's turn signals do not cancel by themselves. What does the manual remind you to do after a turn?
Correct answer: Switch the signal off yourself once the turn is finished
One of the manual's turn-signal rules is to cancel the signal once you have turned if your signals are not self-canceling. Forgetting leaves a signal flashing that no longer means anything.
Source: Hawaii Commercial Driver License Manual — Section 2.5.1, Signal Your Intentions
10. How may the area for the basic vehicle control test be marked out?
Correct answer: By lane lines, cones, barriers or similar markers
For the basic control test you move the vehicle forward, backward and through turns inside a defined area. That area can be laid out with lane markings, cones, barriers or similar items, and the examiner explains how each exercise is to be done.
Source: Hawaii Commercial Driver License Manual — Section 1.1.2, Skills Tests
11. You are on a dark rural highway at night, with no vehicle ahead of you or coming toward you within 500 feet. Which headlight setting does the manual recommend?
Correct answer: High beams, since it is safe and legal there and they let you see farther
Always using low beams seriously cuts down how far you can see. The manual's advice is high beams whenever that is both safe and legal, meaning no approaching vehicle, and no vehicle you are following, within 500 feet.
Source: Hawaii Commercial Driver License Manual — Section 2.11.5, Night Driving Procedures
12. A converter dolly was built in 2005, so it must have an ABS malfunction lamp. Where is that lamp?
Correct answer: On the left side of the dolly
Tractors, trucks and buses show ABS problems with a yellow lamp on the instrument panel, and trailers carry one on the left side. A dolly made on March 1, 1998 or later also needs one, mounted on its left side.
Source: Hawaii Commercial Driver License Manual — Section 2.18.3, How to Know If Your Vehicle Is Equipped with ABS
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