Knowledge Test Class B #1
Class B Driving Test | Illinois 2025 #1 Page 4 of 7
Train for FREE online with our Illinois 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 IL CDL class B permit in 2025, 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 . Which of the following is not a potential effect of drinking alcohol then driving?
Weaving while driving
Driving errors that may be caused by alcohol-induced impairment include straddling lanes; quick, jerky starts; failure to signal or use lights; running stop signs and red lights; and improper passing. A driver's reaction time will become poor when they are under the influence of alcohol.
23 . Radar detectors are:
Prohibited.
Illinois law prohibits the use of radar detectors by drivers of CMVs. Violation of this law is a petty offense with a minimum fine of $50 for a first offense and a minimum of fine of $100 for any subsequent offense.
24 . Which of the following is not a way to reduce driving distractions?
Adjusting mirrors before driving
Strategies for avoiding distracted driving include pre-programming radio stations; planning out your route in advance; adjusting your mirrors before setting out; and not eating, drinking, or smoking while behind the wheel.
25 . When exiting your vehicle, you must maintain ____ with the vehicle at all times.
Two points of contact
When exiting your vehicle during the basic vehicle control skills test, you must face the vehicle and maintain three points of contact at all times. If your testing vehicle is a bus, you must maintain contact with the handrail. Exiting the vehicle incorrectly may result in automatic failure of the basic control skills test.
26 . A low air pressure warning signal should activate:
When tank pressure falls below 5 psi.
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.
27 . When performing a pre-trip inspection, you should make sure that:
There is something underneath the brake pedal.
When checking your vehicle's pedals during a pre-trip inspection, you should ensure that there is nothing under or around the pedals that will obstruct their use. Make sure the pedals are in proper working condition and that the surfaces of the pedals are grooved, if applicable.
28 . When asked to complete a conventional parallel parking maneuver, you should:
Back into the parking space without passing it first.
You may be asked to complete a conventional parallel parking maneuver into a parking space that is to the right of your vehicle. You should drive past the parking space before backing into it while bringing the rear of your vehicle as close to the rear of the space as possible. Your vehicle should be completely within the boundaries of the space.
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2025 Illinois | Frequently Asked Questions
A CDL Class A license in Illinois is a commercial driver's license that permits the holder to operate any combination of vehicles with a Gross Combination Weight Rating (GCWR) of 26,001 pounds or more, provided the vehicle(s) being towed is/are over 10,000 pounds. This typically includes tractor-trailers and truck and trailer combinations.
With a Class A CDL license in Illinois, you can operate vehicles such as tractor-trailers, truck and trailer combinations, tank vehicles, livestock carriers, and flatbeds. Additionally, it allows the operation of all vehicles covered by Class B and Class C, provided the driver has the appropriate endorsements.
To obtain a Class A CDL license in Illinois, you must be at least 18 years old (21 for interstate driving), possess a valid Illinois driver's license, pass a vision test, and complete a written knowledge exam. You're also required to pass a skills and road test in the type of vehicle you plan to drive. A medical examination report is also typically required.
To qualify for a Class A CDL license in Illinois, you must be at least 18 years old. However, to drive across state lines or to carry hazardous materials, you must be at least 21 years old. Also, you'll need to pass both a written knowledge test and a skills test.
While specific endorsements aren't required for a Class A CDL license in Illinois, additional endorsements can expand the types of vehicles you're allowed to drive or cargo you can transport. For example, an H endorsement permits the transportation of hazardous materials, while a P endorsement allows for the transportation of passengers.
The Class A CDL skills test in Illinois encompasses three parts: a pre-trip vehicle inspection, a basic vehicle control test, and a road test. Examinees must demonstrate their ability to inspect their vehicle, control the vehicle in various situations, and drive safely in normal traffic conditions.
Yes, limitations can be imposed on Class A CDL license holders based on factors like medical conditions or lack of certain skills. For example, a driver may receive a restriction if they can't operate a manual transmission or if they need adaptive equipment to drive. Restrictions are noted on the CDL and must be adhered to while operating commercial vehicles.
Yes, in Illinois, the written Class A CDL test is available in several languages besides English, including Spanish. However, federal law requires that all CDL holders understand English well enough 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 the Class A CDL written test if you have a disability. These may include providing the test in an alternate format or allowing additional time. It's important to contact the Illinois Secretary of State's office in advance to discuss your needs and make necessary arrangements.
Yes, you can retake the Class A CDL written test in Illinois if you don't pass on your first attempt. However, you'll need to wait at least 24 hours before retaking the test. Also, keep in mind that each retest may require an additional fee. It's advisable to study thoroughly before attempting the test again.
