Class B Driving Test | Iowa 2024 #2

Train for FREE online with our Iowa class B license test. 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 class B permit 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 CDL class B requirements may vary from state to state.

Number of Question 50

Passing Score 40

Number of Tests 20

1 . Operating a CMV with any measurable amount of alcohol in your system will result in an out-of-service order for:

24 hours.

One week.

One month.

One year.

If you are found to be driving with any detectable amount of alcohol in your system, but are still below the legal limit of 0.04 percent, you will put out-of-service for a period of 24 hours.

2 . When mirrors are properly adjusted:

No part of the vehicle should be visible in the mirrors.

A part of the vehicle should be visible in the mirrors.

More than half of each mirror should show the vehicle.

A properly adjusted mirror will show some portion of the vehicle. This will provide a point of reference to help the driver judge the distance of other objects to the vehicle.

3 . When checking power steering hoses during a pre-trip inspection, you should look for:

Leaks.

Secure connections to the battery.

Extra hose pieces available for repairs.

When doing a pre-trip inspection on a vehicle with power steering, be sure to check the hoses, pumps, and fluid level. In particular, you should check the hoses for leaks.

4 . When transporting a load, you should inspect the cargo:

Only before starting to drive.

At the end of each day.

Every time you take a break.

Cargo and its securement must be inspected every time you take a break during a trip. Be sure to inspect the cargo at least every 150 miles.

5 . Interstate carriers must have what information affixed to the commercial motor vehicles in their fleet?

Trade name

Width of the truck

Length of the truck

Federal Motor Carrier Safety Regulations (FMCSR) require carriers to affix the legal name or single trade name to each CMV in their fleet.

6 . Which of the following is not a cause of hydraulic brake failure?

Loss of hydraulic pressure

Brake fade on long hills

Downshifting

Most cases of hydraulic brake failure come from one of two causes. The brakes may fail due to a loss of hydraulic pressure or due to overuse on long hills, causing the brakes to fade.

7 . When making a lane change, your turn signal:

Should always be used.

Should only be used if there is traffic present.

Should only be used between dusk and dawn.

You must always properly signal before turning or changing lanes.

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2024 Iowa | Frequently Asked Questions

A CDL Class B license in Iowa is designated for drivers operating vehicles with a Gross Vehicle Weight Rating (GVWR) exceeding 26,000 pounds, or towing vehicles not exceeding 10,000 pounds. This includes buses, dump trucks, straight trucks, and other large freight trucks. Drivers must pass knowledge and skills tests to obtain this license. Age and health requirements also apply.

A Class B CDL license in Iowa allows the holder to operate single vehicles with a Gross Vehicle Weight Rating (GVWR) of 26,001 or more pounds, or any such vehicle towing another not in excess of 10,000 pounds. This includes large passenger buses, segmented buses, straight trucks, dump trucks, delivery trucks, and utility trucks.

To acquire a Class B CDL license in Iowa, applicants must be at least 18 years old (21 for interstate driving), possess a valid non-commercial driver's license, and pass a vision test. They must also pass a general knowledge test and a skills test, which includes a pre-trip vehicle inspection, a basic controls test, and a driving test. Medical examinations are also required.

To qualify for a Class B Commercial Driver's License (CDL) in Iowa, you must be at least 18 years old. However, you must be 21 years or older if you plan to drive across state lines, carry hazardous materials, or drive a vehicle designed to transport 16 or more passengers, including the driver.

Specific endorsements aren't necessary for a Class B CDL license, but they can enhance your license. Endorsements allow you to drive certain types of vehicles, like school buses, tank vehicles, or vehicles carrying hazardous materials. To get an endorsement, you'll need to pass additional written and skills tests.

The Class B CDL skills assessment in Iowa includes a pre-trip vehicle inspection, where you demonstrate knowledge about your vehicle and its safety. It also includes a basic controls test, where you show your ability to control the vehicle. Lastly, it encompasses a driving test, where you demonstrate safe driving practices on public roads.

Yes, Class B CDL license holders in Iowa are limited to operating vehicles under 26,001 pounds or towing vehicles not exceeding 10,000 pounds. They can drive buses, farm labor vehicles, and any fire-fighting or emergency vehicles. However, they cannot operate Class A vehicles without the proper endorsements. Interstate driving is not allowed until the age of 21.

Yes, in Iowa, the written Class B CDL test can be taken in Spanish. However, the Federal Motor Carrier Safety Administration requires all commercial drivers to read and speak English sufficiently to converse with the general public, understand highway traffic signs and signals, respond to official inquiries, and make entries on reports and records.

Yes, accommodations can be made for individuals with disabilities taking the Class B CDL written exam in Iowa. You need to request these accommodations in advance when scheduling your exam. Accommodations may include extended time, a separate testing room, or use of assistive technology. Always check with your local DMV office for specific procedures and requirements.

Yes, if you don't pass the Class B CDL written test in Iowa, you can retake it. However, you must wait at least one day before retaking the test. There may be additional fees for each retest. If you fail the test several times, you might be required to wait a longer period before your next attempt.