North Carolina examen de CDL — Práctica Gratis
60 preguntas de práctica del examen de CDL de North Carolina, formato de opción múltiple con respuestas y explicaciones.
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Preguntas de muestra
1. What does a flashing yellow traffic light mean?
- Stop completely and wait for it to turn green
- Slow down and proceed with caution ✓
- Speed up to clear the intersection
- Treat it as a stop sign
Explicación: A flashing yellow light warns you to slow down and proceed with caution — it does not require a full stop. [通用题转正]
2. What is the legal blood alcohol concentration (BAC) limit for a non-commercial adult driver in most states?
- 0.04%
- 0.08% ✓
- 0.10%
- 0.12%
Explicación: In nearly all states the legal BAC limit for a non-commercial adult driver is 0.08%. [通用题转正]
3. When can you legally drive using only your parking lights?
- At dawn and dusk only
- When driving in a well-lit area
- Never — parking lights are for parked vehicles only ✓
- When following another vehicle at night
Explicación: Parking lights are for parked vehicles only. You must use your headlights when driving in the dark or in low visibility. [通用题转正]
4. A solid white line between lanes of traffic means:
- You may change lanes at any time
- Lane changes are discouraged — do not change lanes across it ✓
- It is a bike lane
- You must stop before crossing
Explicación: A solid white line means lane changes are discouraged or prohibited depending on the state. [通用题转正]
5. What should you do when approaching a school bus with flashing red lights?
- Slow down and pass carefully
- Stop and wait until the lights stop flashing ✓
- Honk to alert the driver
- Pass on the right side
Explicación: When a school bus flashes red lights, you must stop and wait until the lights stop flashing. [通用题转正]