FREE South Carolina CDL Passenger Vehicles Practice Test (2023)

1. Bus drivers must have a commercial driver's license (CDL) if transporting ____ students or more.

2. Which of the following could cause poisonous carbon monoxide to enter the cab?

3. You should always adjust your speed to be able to stop within:

50 feet.
the length of your vehicle.
30 feet.
the distance you can see ahead.

4. You should do an after-trip inspection:

5. To prevent your vehicle from rolling back when you start you should:

release the parking brake, then apply enough engine power to keep from rolling back.
put the transmission in Neutral.
partly take your right foot off the brake before you engage the clutch.
partly engage the clutch before you take your right foot off the brake.

6. What should you do if you doubt you have safe space to pass under a low bridge?

Assume that the height posted at the bridges is correct.
Go slowly, and take another route if you are not sure you can make it.
If no warnings are posted, assume there is enough clearance under the bridge and proceed slowly.
Increase the weight of your vehicle to clearing under the bridge.

7. Do not push or tow a disabled bus with riders aboard the vehicle, unless:

the distance to be covered is less than 5 miles.
there are 15 students or less.
the majority of the passengers agree.
getting off would be unsafe.

8. Which of the following statements about speed management and braking is true?

Driving below the posted speed limit will always allow you to stop safely.
Stopping time increases by one second for each 10 mph over 30 mph.
The total stopping distance of a bus is the distance your vehicle will travel, in ideal conditions, while you are braking.
None of the above.

9. When you double your speed from 20 to 40 mph, the braking distance:

10. When driving at night you should dim your lights when following another vehicle within:

CDL PASSENGER PRACTICE TEST SOUTH CAROLINA