Knowledge Test Class B #2
Class B Driving Test | Idaho 2026 #2 Page 4 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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22 . If the coolant temperature gauge goes above the highest safe temperature, you should:
If the coolant temperature gauge goes above the highest safe temperature, you should stop driving as soon as possible and try to figure out what is wrong. There could be an issue in your vehicle that could lead to engine failure and possibly a fire.
23 . When backing with a trailer, turning toward the driver’s side is encouraged:
If you must back up, it is safest to back toward the driver's side of the vehicle. This way, as the driver, you will have the best possible view of your path of travel.
24 . When should a driver sign a vehicle inspection report?
You must sign a vehicle inspection report only if defects were noted and either certified to have been repaired or certified as not needing to be repaired.
25 . Texting while operating a CMV is:
Texting and driving is dangerous for everyone on the road. It is illegal to text while operating a CMV.
26 . Which of the following is an indication of standing water on the roadway?
Hydroplaning can occur in places where water collects on the road. Clear reflections, tire splashes, or rain drops on the road can indicate the presence of standing water.
27 . If you remain in neutral for too long while switching gears:
If you remain in neutral for too long while switching gears, you may have difficulty putting the vehicle into the next gear. If this happens, do not try to force the gear shift. Instead, return to neutral, release the clutch, increase the engine speed to match the road speed, and try again.
28 . A CMV should:
All commercial motor vehicles are required to be equipped with the proper emergency equipment. This may include spare electrical fuses; three red reflective triangles, six fuses, or three liquid burning flares; and at least one properly charged and rated fire extinguisher.
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.