Illinois CDL — General Knowledge practice
Illinois CDL — General Knowledge: Penalties & Licensing practice test
The point system, license suspension, provisional-license rules, insurance requirements, and other licensing basics.
Content reviewed against official driver handbooks · August 12, 2026
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12 sample Penalties & Licensing questions with the correct answer, a short explanation, and the official handbook reference. Read through them, then take the quiz above.
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1. A traffic violation connected to a fatal crash leads to what minimum disqualification for a commercial driver?
Correct answer: 12 months
Any traffic-control violation, other than a parking offense, tied to a fatal accident results in a disqualification of at least 12 months.
2. How long is a driver disqualified for a third serious traffic violation within the same three-year period?
Correct answer: 120 days
A third serious violation inside a three-year window doubles the earlier penalty, resulting in a 120-day disqualification.
Source: Illinois CDL Guide — Sec. 1.5, Serious Traffic Violations
3. Racking up two serious traffic offenses inside any three-year span results in a disqualification of how long?
Correct answer: 60 days
Accumulating two serious traffic violations in any three-year period costs the driver a 60-day disqualification. A third such violation in that window raises the penalty to 120 days.
Source: Illinois CDL Guide — Sec. 1.5, Serious Traffic Violations
4. Within how long must a driver tell their employer after their driving privileges are suspended, revoked, or disqualified?
Correct answer: Two business days
A driver must inform their employer no later than two business days after a suspension, revocation, cancellation, or disqualification takes effect.
5. Applying for a hazardous-materials endorsement requires the applicant to complete what additional step?
Correct answer: A fingerprint-based background check
Anyone seeking the hazmat endorsement must pass a fingerprint-based nationwide background check through the Transportation Security Administration before it can be issued.
Source: Illinois CDL Guide — Sec. 1.5, Hazardous Materials Endorsement
6. Which vehicle description matches a Class A commercial driver's license?
Correct answer: A combination over 26,001 pounds towing a unit rated above 10,000 pounds
Class A covers combinations rated at 26,001 pounds or more where the unit being towed is rated above 10,000 pounds — for example, a tractor pulling a heavy semi-trailer.
7. Which offense committed while operating a commercial vehicle leads to at least a 12-month disqualification?
Correct answer: Committing a felony while operating the vehicle
Committing a felony while operating a commercial or non-commercial vehicle results in a disqualification of at least one year, alongside DUI, refusal, and leaving an accident scene.
8. Which of these is a serious traffic violation that can count toward a disqualification if repeated?
Correct answer: Texting or using a hand-held phone while driving a CMV
Texting or using a hand-held phone while driving a commercial vehicle is treated as a serious traffic violation. Two within three years bring a 60-day disqualification.
Source: Illinois CDL Guide — Sec. 1.5, Serious Traffic Violations
9. Which endorsement is required to haul a quantity of hazardous materials that must be placarded?
Correct answer: The H endorsement
Transporting a placardable amount of hazardous materials requires the H (hazardous materials) endorsement, which also involves a fingerprint-based background check.
10. A driver commits a third out-of-service order violation within a 10-year period. What is the minimum disqualification?
Correct answer: Three years
Three or more out-of-service violations inside a 10-year period carry a disqualification of no less than three years — a steep escalation from the 90-day first-offense penalty.
Source: Illinois CDL Guide — Sec. 1.5, Out-of-Service Orders
11. A driver with a hazardous-materials endorsement is convicted of a disqualifying crime. How quickly must they surrender the endorsement?
Correct answer: Within 24 hours
A driver holding the hazmat endorsement must notify and surrender it to the issuing state within 24 hours of conviction, indictment, or being found not guilty by reason of insanity for a disqualifying crime.
Source: Illinois CDL Guide — Sec. 1.5, Hazardous Materials Endorsement
12. What is the minimum penalty when a driver first violates an out-of-service order?
Correct answer: At least 90 days
A first out-of-service order violation costs the driver at least 90 days. A second within a decade means at least a year, and a third at least three years.
Source: Illinois CDL Guide — Sec. 1.5, Out-of-Service Orders
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