When using a fire extinguisher, you should stand as far away from the fire as possible. Aim the extinguisher at the base of the fire, not at the flames. If you are not sure which kind of extinguisher should be used on a fire, particularly a hazardous materials fire, you should wait for the firefighters to arrive and allow them to extinguish it.

Stand as far away from the fire as possible.

Get as close to the fire as possible.

Stand as far away from the fire as possible.

Aim the extinguisher at the top of the fire.

Aggressive driving is defined as operating a motor vehicle in a selfish, bold, or pushy manner. Road rage is defined as operating a motor vehicle with the intent of doing harm to others, or the intent of physically assaulting another driver or their vehicle.

Operating a motor vehicle with the intent of doing harm to others

Operating a motor vehicle that is deemed unsafe

Operating a motor vehicle that has not been inspected

The air storage tanks in an air brake system store compressed air to be used for braking. They hold enough air for the brakes to still be used several times if the compressor stops working.

Hold enough air for the brakes to be used several times if the compressor stops working.

Hold only enough air for one braking cycle.

Hold enough air for the brakes to be used several times if the compressor stops working.

Do not hold air unless there is an emergency.

Always observe posted speed limits for work zones. Slow down if road or weather conditions are adverse, and slow down even more if workers are on or near the road.

Steer with one hand and keep the other hand free.

Fully-loaded rigs are more vulnerable to rolling over than empty rigs because the weight of the cargo gives the vehicles higher centers of gravity.

Are more likely to roll over than empty rigs.

Are less likely to roll over than empty rigs.

Are more likely to roll over than empty rigs.

Are just as likely to roll over as empty rigs.

In an air brake system, a low air pressure warning signal must come on if air pressure in the tanks falls below 60 psi. This warning signal may come in the form of a light, a buzzer, or a wig wag.

When tank pressure falls below 60 psi.

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.

Double Triple Test | Iowa 2024 #1 Page 3 of 3

Train for FREE with our Iowa CDL double triple practice test online. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a IA CDL double triple license in 2024, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that DMV requirements may vary from state to state.

Number of Question 20

Passing Score 16

Number of Tests 20

Double Triple Test | Iowa 2024 #1 Page 3 of 3

15 . When using a fire extinguisher on a fire, you should:

16 . What is road rage?

17 . The air storage tanks:

18 . When traveling through a work zone, you should:

19 . Fully-loaded rigs:

20 . A low air pressure warning signal should activate:

See the exact questions that will be on the 2024 Iowa DMV exam.

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