Knowledge Test Class B #2
Class B Driving Test | Idaho 2026 #2 Page 3 of 7
Train for FREE online with our Idaho 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 ID CDL class B permit in 2026, 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.
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15 . When driving down a steep hill, your primary source of braking should be:
On a steep downgrade, you must use the engine's braking effect as your primary method of speed control. Be sure to decelerate and downshift appropriately before beginning to drive down the hill. Relying too heavily on the brakes may cause them to overheat and fade, becoming less effective.
16 . When checking your mirrors:
Regularly check mirrors on both sides of your vehicle while driving. It is important to be aware of what is happening behind and to the sides of your vehicle.
17 . After starting the engine as part of a pre-trip inspection, the driver should:
Check your engine during the pre-trip inspection. After starting the engine, you should listen for unusual noises.
18 . Interstate carriers must have what information affixed to the commercial motor vehicles in their fleet?
Federal Motor Carrier Safety Regulations (FMCSR) require carriers to affix the legal name or single trade name to each CMV in their fleet.
19 . During the driving test, the examiner will be scoring you on:
During the on-road driving test, the examiner will be score you on specific driving maneuvers as well as on your general driving behavior. You must drive in a safe and responsible manner; obey all traffic signs, signals, and laws; and not cause an accident or commit a moving violation.
20 . For a basic vehicle control skills test, you are expected to be able to:
Maneuvers that may be included in the basic vehicle control skills test include straight line backing, offset back/right parking, offset back/left parking, driver side parallel parking, conventional parallel parking, and alley docking.
21 . If convicted of any traffic violations, excluding parking violations, you must:
If you are convicted of any kind of traffic violation, in any type of vehicle, you must notify your employer within 30 days. You must also inform your motor vehicle licensing agency of the violation within 30 days if the conviction happened in another jurisdiction. This rule does not apply to parking infractions.
2026 Idaho | Frequently Asked Questions
A CDL Class B license in Idaho allows the holder to operate single vehicles with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, or a towed vehicle not exceeding 10,000 pounds GVWR. This includes straight trucks, large buses, segmented buses, and dump trucks with small trailers. A special endorsement may be needed for certain vehicles.
A Class B CDL license in Idaho allows the holder to operate single vehicles with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, or tow a vehicle not exceeding 10,000 pounds GVWR. This includes straight trucks, large buses, segmented buses, farm labor vehicles, and dump trucks with small trailers. Special endorsements may be required for certain vehicles.
To acquire a Class B CDL license in Idaho, the applicant must be at least 18 years old for intrastate transport and 21 for interstate transport. They must pass a vision test, obtain a Medical Examiner's Certificate, pass a General Knowledge test, and a skills test which includes pre-trip inspection, basic controls, and on-road driving. Prior to testing, applicants need a Commercial Learner's Permit (CLP).
In Idaho, you must be at least 18 years old to qualify for a Class B CDL license for intrastate transport (within Idaho only). However, if you intend to drive interstate (across state lines), you must be at least 21 years old. These age requirements are set by the Federal Motor Carrier Safety Administration.
Specific endorsements aren't necessary for a Class B CDL license in Idaho, but they can broaden the range of vehicles you can operate and materials you can transport. These endorsements include passenger, school bus, tanker, hazardous materials (HazMat), and double/triple trailers. To get these endorsements, you must pass additional knowledge and skills tests.
The Class B CDL skills assessment in Idaho includes a pre-trip vehicle inspection, a basic vehicle control test, and an on-road driving test. You'll demonstrate your ability to inspect your vehicle, control its operation, and drive it safely in various road and traffic conditions. The specific maneuvers and operations you'll perform depend on the type of vehicle you're testing in.
Yes, Class B CDL license holders in Idaho are limited to operating vehicles with a gross vehicle weight rating (GVWR) of 26,001 lbs or more, or a vehicle towing another vehicle not exceeding 10,000 lbs GVWR. They cannot drive Class A vehicles (tractor-trailers) without the appropriate license. Also, without specific endorsements, they cannot transport hazardous materials or more than 15 passengers.
In Idaho, the written CDL test is primarily offered in English. However, some locations may offer the test in Spanish. It's important to note that all CDL applicants must pass an English proficiency test, as federal regulations require drivers to read and speak English to ensure road safety. Always check with your local DMV for available language options.
Yes, you can request test accommodations for the Class B CDL written exam in Idaho due to disability. The Idaho Transportation Department adheres to the Americans with Disabilities Act (ADA) and provides reasonable accommodations. However, you must provide documentation to verify your disability. Contact your local DMV office to discuss your specific needs and to ensure the right accommodations are made.
If you fail the Class B CDL written test in Idaho, you can retake it. However, you must wait at least three days before you can try again. Keep in mind that each attempt may require an additional fee. It's recommended to study thoroughly using the Idaho CDL manual and online practice tests to increase your chances of passing on the next attempt.