Double #2 - South Carolina Cdl

1 . What kind of brakes do most newer heavy-duty trucks use?

Single air brakes Dual air brakes Triple air brakes Click Here Full Cheat Sheet

2 . What kind of force do emergency brakes use?

Air pressure Mechanical Heavy Take a FREE Practice Test Now

3 . In a vehicle with dual air brakes, a leak in one system ____ the second system.

Will always affect May not affect Is caused by Take a FREE Practice Test Now

4 . When looking under your vehicle's hood during a pre-trip inspection, you should:

Use the parking brakes and/or chock blocks. Leave the vehicle in a low gear. Remove the battery. Disconnect the radiator. Take a FREE Practice Test Now

5 . You should always be able to stop within:

10 feet of your vehicle. 1,000 feet of your vehicle. Your view of the road ahead. 30 seconds of hitting the brakes. Click Here Full Cheat Sheet

6 . How much water needs to be on the surface of a road for a vehicle to hydroplane?

Usually several inches A good amount, such as a large puddle A small amount None Take a FREE Practice Test Now

7 . If brakes fail on a long downgrade, the driver should:

Turn the vehicle off and then back on to reset the brakes. Pump the brakes. Look for an escape ramp or other way to stop. Take a FREE Practice Test Now

8 . An alcohol evaporator is especially important:

In cold weather. In hot weather. In dry weather. Take a FREE Practice Test Now

9 . Stopping distance can be affected by:

Speed. Engine oil. Time of day. Traffic. Click Here Full Cheat Sheet

10 . Which of the following is not an example of a distracted person that motorists should be worried about?

A driver talking to a passenger in their vehicle A child on the side of the road A construction worker on the side of the road A person sitting on a bench waiting for a bus Take a FREE Practice Test Now

11 . Which of the following is not an example of a distracted person who should concern motorists?

A driver talking to a passenger in their vehicle A person sitting on a bench waiting for a bus A construction worker on the side of the road Take a FREE Practice Test Now

Study tip: Reduce your study time from hours to minutes with a DMV exam “Cheat Sheet” 99.2% of people who use the cheat sheet pass the FIRST TIME Click Here Full Cheat Sheet

12 . A low air pressure warning signal should activate:

When tank pressure falls below 120 psi. When tank pressure falls below 60 psi. When tank pressure falls below 10 psi. When tank pressure falls below 5 psi. Take a FREE Practice Test Now

13 . If your vehicle is hydroplaning, you should:

Use the accelerator. Not use the brakes. Put the vehicle in a higher gear. Click Here Full Cheat Sheet

14 . To help your vehicle be seen by others:

Your headlights should be clean. Your headlights should be turned off during the day. Your headlights should be covered with grease. Your headlights should be used, but only in the rain. Take a FREE Practice Test Now

15 . If you are not sure if there is enough space for your vehicle to safely pass under a bridge, you should:

Speed up. Swerve as you pass under the bridge. Slow down. Drive on the shoulder. Take a FREE Practice Test Now

16 . Move over laws require:

Trucks to use the left lane. All vehicles to vacate the lane closest to an emergency vehicle stopped with its lights flashing. All vehicles to use the left lane. All drivers to move into the left lane if a flatbed trailer is in the right lane. Take a FREE Practice Test Now

17 . Air tank drains:

Allow rain water to enter air tanks. Are used to drain water and oil from air tanks. Should never be opened. Must remain open while driving. Click Here Full Cheat Sheet

18 . How many daily hours of sleep does an adult need to maintain alertness?

Six to seven Seven to eight Eight to nine Take a FREE Practice Test Now

19 . You should always be able to stop within:

10 feet of your vehicle. 1,000 feet of your vehicle. Your view of the road ahead. One minute of hitting the brakes. Take a FREE Practice Test Now

20 . When driving, you should stop and take a break ____ to avoid becoming too tired.

Every half hour Every hour Every two hours Every six hours Take a FREE Practice Test Now