A combination vehicle is a Group A commercial motor vehicle when its gross combination weight rating is 26,001 pounds or more and the towed unit's GVWR is:

Any weight — towing always makes it Group A

A van that doesn't meet the Group A or B weight thresholds still requires a CDL (Group C) if it is designed to transport:

16 or more passengers including the driver

8 or more passengers including the driver

12 or more passengers excluding the driver

Any passengers for compensation

How many driver's licenses may a CMV operator hold at one time?

One from each state where they regularly drive

Two — one personal and one commercial

As many as needed, if all are valid

While a commercial learner's permit (CLP) holder drives on a public road, the accompanying CDL holder must:

Be physically present in the front seat next to the driver

Follow in a separate vehicle within sight

Be reachable by phone during the trip

Be anywhere in the vehicle, awake or asleep

Before receiving a CLP, an applicant must first pass which test for the vehicle they expect to operate?

A road test with a state examiner

Which endorsements may appear on a commercial learner's permit?

Passenger (P), school bus (S), and tank vehicle (N) only

Hazardous materials (H), tank (N), and passenger (P)

Any endorsement the State offers

None — endorsements only exist on full CDLs

A driver wants to pull double trailers. Which endorsement must they obtain?

No endorsement; it's covered by a Class A CDL

An applicant takes the CDL skills test in a vehicle without air brakes. What happens?

The license carries an air-brake restriction

Nothing — air brakes only matter on the knowledge test

The CDL is denied until they retest

They are limited to intrastate driving

Getting Your CDL & Safe Operations Rules

All 40 questions in this topic, free — with answers, explanations, and the official source for each.

Question 1
A combination vehicle is a Group A commercial motor vehicle when its gross combination weight rating is 26,001 pounds or more and the towed unit's GVWR is:
- A.More than 10,000 pounds
- B.More than 6,000 pounds
- C.More than 16,000 pounds
- D.Any weight — towing always makes it Group A
Show answer & explanation
Answer: A. More than 10,000 pounds
Group A (combination vehicle) means a GCWR of 26,001 pounds or more, provided the vehicle(s) being towed have a GVWR of more than 10,000 pounds. Lighter trailers can leave the combination in Group B or below.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.91(a)(1) — Vehicle group descriptions, Group A
Question 2
A single vehicle (no trailer) requires a Class B CDL when its gross vehicle weight rating is at least:
- A.16,001 pounds
- B.26,001 pounds
- C.10,001 pounds
- D.33,001 pounds
Show answer & explanation
Answer: B. 26,001 pounds
Group B (heavy straight vehicle) is any single vehicle with a GVWR of 26,001 pounds or more — or such a vehicle towing a trailer of 10,000 pounds GVWR or less.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.91(a)(2) — Vehicle group descriptions, Group B
Question 3
A van that doesn't meet the Group A or B weight thresholds still requires a CDL (Group C) if it is designed to transport:
- A.8 or more passengers including the driver
- B.12 or more passengers excluding the driver
- C.16 or more passengers including the driver
- D.Any passengers for compensation
Show answer & explanation
Answer: C. 16 or more passengers including the driver
Group C covers smaller vehicles that are designed to transport 16 or more passengers including the driver, or that carry hazardous materials requiring placards.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.91(a)(3) — Vehicle group descriptions, Group C
Question 4
How many driver's licenses may a CMV operator hold at one time?
- A.One from each state where they regularly drive
- B.Two — one personal and one commercial
- C.Exactly one
- D.As many as needed, if all are valid
Show answer & explanation
Answer: C. Exactly one
Federal law is blunt: no person who operates a CMV may have more than one driver's license at any time. Surrendering extra licenses is part of the CDL application.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.21 — Number of drivers' licenses
Question 5
While a commercial learner's permit (CLP) holder drives on a public road, the accompanying CDL holder must:
- A.Follow in a separate vehicle within sight
- B.Be physically present in the front seat next to the driver
- C.Be reachable by phone during the trip
- D.Be anywhere in the vehicle, awake or asleep
Show answer & explanation
Answer: B. Be physically present in the front seat next to the driver
The supervising CDL holder — with the proper group and endorsements for that vehicle — must be physically present in the front seat (or the first row, in a passenger vehicle) with the CLP holder under direct observation.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.25(a)(1) — CLP minimum conditions
Question 6
Under the federal standards, a CLP holder must be at least:
- A.16 years old
- B.17 years old
- C.18 years old
- D.21 years old
Show answer & explanation
Answer: C. 18 years old
Federal rules set the CLP minimum age at 18. (Interstate driving and certain operations have higher age requirements under other rules, but the CLP floor is 18.)
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.25(a)(4) — CLP minimum conditions, age
Question 7
Before receiving a CLP, an applicant must first pass which test for the vehicle they expect to operate?
- A.The driving skills test
- B.The general knowledge test
- C.A road test with a state examiner
- D.The air brakes skills test
Show answer & explanation
Answer: B. The general knowledge test
A CLP requires passing the general knowledge test that meets the federal standards for the CMV the applicant operates or expects to operate. The skills (driving) test comes later, for the full CDL.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.25(a)(3) — CLP minimum conditions, knowledge test
Question 8
Which endorsements may appear on a commercial learner's permit?
- A.Hazardous materials (H), tank (N), and passenger (P)
- B.Passenger (P), school bus (S), and tank vehicle (N) only
- C.Any endorsement the State offers
- D.None — endorsements only exist on full CDLs
Show answer & explanation
Answer: B. Passenger (P), school bus (S), and tank vehicle (N) only
Only the P, S, and N endorsements are allowed on a CLP — and each comes with operating prohibitions during the learner period (e.g., a P-endorsed CLP holder can't carry actual passengers). Hazmat requires a full CDL.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.93(a)(2) — Endorsements allowed on a CLP
Question 9
A driver wants to pull double trailers. Which endorsement must they obtain?
- A.T — double/triple trailers
- B.N — tank vehicle
- C.X — combination
- D.No endorsement; it's covered by a Class A CDL
Show answer & explanation
Answer: A. T — double/triple trailers
Double/triple trailers require their own endorsement (coded T) earned by a specialized knowledge test. A plain Class A CDL alone doesn't authorize doubles.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.93(b)(1) — Endorsement descriptions
Question 10
An applicant takes the CDL skills test in a vehicle without air brakes. What happens?
- A.Nothing — air brakes only matter on the knowledge test
- B.The CDL is denied until they retest
- C.The license carries an air-brake restriction
- D.They are limited to intrastate driving
Show answer & explanation
Answer: C. The license carries an air-brake restriction
Failing the air-brake knowledge component or testing in a vehicle not equipped with air brakes puts an air-brake restriction (L) on the license — the driver may not operate CMVs with air brakes until they retest.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.95(a) — Air brake restriction
Question 11
Taking the CDL skills test in a vehicle with an automatic transmission results in:
- A.No effect on the license
- B.A restriction against driving manual-transmission CMVs
- C.An automatic 30-day probation period
- D.A requirement to retest within one year
Show answer & explanation
Answer: B. A restriction against driving manual-transmission CMVs
If the skills test vehicle has an automatic transmission, the State marks the CDL with a restriction barring manual-transmission CMVs. Test in a manual if you want to drive one.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.95(c) — Manual transmission restriction
Question 12
A CDL holder is convicted of a traffic violation (not parking) in another state. Within how many days must they notify the state that issued their license?
- A.10 days
- B.30 days
- C.60 days
- D.90 days
Show answer & explanation
Answer: B. 30 days
Out-of-state convictions for any motor-vehicle traffic-control violation (other than parking) must be reported to the licensing state's designated official within 30 days of the conviction.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.31 — Notification of convictions
Question 13
A driver's license is suspended by a state. Who must the driver notify?
- A.The FMCSA directly
- B.Their current employer
- C.Their insurance carrier
- D.The nearest port of entry
Show answer & explanation
Answer: B. Their current employer
A driver whose license is suspended, revoked, or canceled — or who is disqualified or loses the right to operate a CMV — must notify their current employer of the action.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.33 — Notification of driver's license suspensions
Question 14
A CDL holder is convicted of driving a CMV with an alcohol concentration of 0.04 or greater — a first offense. The disqualification period is:
- A.60 days
- B.120 days
- C.One year
- D.Three years
Show answer & explanation
Answer: C. One year
A first conviction for a 0.04+ alcohol concentration in a CMV is a major offense: one-year disqualification (three years if the CMV was placarded for hazardous materials; a second conviction is lifetime).
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.51(b) Table 1 (3) — Major offenses
Question 15
For a first major offense (like DUI or leaving the scene) committed while the CMV was transporting placarded hazardous materials, the disqualification period becomes:
- A.One year
- B.Two years
- C.Three years
- D.Five years
Show answer & explanation
Answer: C. Three years
Table 1's major-offense disqualifications jump from one year to three years when the offense occurred while transporting hazardous materials requiring placards.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.51(b) Table 1 — hazmat column
Question 16
A second conviction for a major offense (e.g., a second DUI in separate incidents) disqualifies a CDL holder for:
- A.Three years
- B.Five years
- C.Ten years
- D.Life
Show answer & explanation
Answer: D. Life
Second convictions of Table 1 major offenses bring lifetime disqualification. A state MAY allow reinstatement after 10 years following an approved rehabilitation program — once, and never again after another offense.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.51(a)(6), (b) Table 1 — second conviction
Question 17
Using a CMV in a felony involving manufacturing, distributing, or dispensing controlled substances results in:
- A.A 3-year disqualification
- B.A 10-year disqualification with reinstatement possible
- C.Lifetime disqualification with no 10-year reinstatement
- D.A 1-year disqualification plus fines
Show answer & explanation
Answer: C. Lifetime disqualification with no 10-year reinstatement
Drug-trafficking felonies committed with the vehicle are the harshest entry in Table 1: lifetime disqualification, explicitly NOT eligible for the 10-year reinstatement that other lifetime bans may allow.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.51(b) Table 1 (9) — controlled-substance felony
Question 18
May an employer assign a disqualified driver to drive a CMV?
- A.Yes, for intrastate routes only
- B.Yes, if the run is under 100 air-miles
- C.No — employers must not knowingly allow a disqualified driver to drive
- D.Only with FMCSA written permission
Show answer & explanation
Answer: C. No — employers must not knowingly allow a disqualified driver to drive
The disqualification rules bind employers too: an employer must not knowingly allow, require, permit, or authorize a disqualified driver to operate a CMV.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.51(a)(2) — Disqualification, employer duty
Question 19
To pass a CDL knowledge test, you must answer at least:
- A.70% of the questions correctly
- B.75% of the questions correctly
- C.80% of the questions correctly
- D.85% of the questions correctly
Show answer & explanation
Answer: C. 80% of the questions correctly
The federal standard for every CDL knowledge test — general and endorsement — is a minimum passing score of 80 percent.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.135(a)(1) — Passing knowledge tests
Question 20
Where do the questions on your state's CDL knowledge test come from?
- A.Each examiner writes their own questions
- B.An FMCSA pre-approved national question pool used by all states
- C.The vehicle manufacturer's training materials
- D.A private testing company chosen by each county
Show answer & explanation
Answer: B. An FMCSA pre-approved national question pool used by all states
States must build knowledge tests from the FMCSA pre-approved pool (comparable to the AAMVA CDL test system) — which is why studying the federal standards prepares you for any state's test.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.133(b)(1) — Knowledge test methods
Question 21
A commercial learner's permit may be valid for no more than how long from its initial issuance?
- A.90 days
- B.180 days
- C.One year
- D.Two years
Show answer & explanation
Answer: C. One year
A CLP can be issued (or issued plus renewed) for up to one year from the initial issuance date without retaking the knowledge tests. After a year, the tests must be retaken.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.25(c) — CLP validity period
Question 22
A CLP issued for six months may be renewed without retesting as long as:
- A.The renewal fee is doubled
- B.The total validity stays within one year of the initial issuance
- C.The holder has logged 50 supervised driving hours
- D.The renewal happens in the same calendar year
Show answer & explanation
Answer: B. The total validity stays within one year of the initial issuance
Shorter CLPs can be renewed without retaking the general and endorsement knowledge tests — but the permit can never be valid more than one year past the date it was first issued.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.25(c) — CLP renewal
Question 23
Before a state may issue your first CDL, you must have:
- A.Held a CLP — it's a precondition to initial CDL issuance
- B.Completed 160 classroom hours
- C.Owned a registered commercial vehicle
- D.Passed a federal background check
Show answer & explanation
Answer: A. Held a CLP — it's a precondition to initial CDL issuance
Issuance of a CLP is a precondition to the initial issuance of a CDL (and to upgrading to a higher class) — there's no skipping straight to the license.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.25(d) — CLP as precondition
Question 24
For CDL disqualification purposes, "excessive speeding" means driving at least how far over the limit?
- A.10 mph
- B.15 mph
- C.20 mph
- D.25 mph
Show answer & explanation
Answer: B. 15 mph
Excessive speeding — a serious traffic violation — is any speed 15 mph (24.1 km/h) or more above the regulated or posted limit.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.51(c) Table 2 (1) — Serious traffic violations
Question 25
A CDL holder is convicted of a second serious traffic violation (separate incidents) within three years. The disqualification is:
- A.30 days
- B.60 days
- C.120 days
- D.One year
Show answer & explanation
Answer: B. 60 days
Two serious traffic violations within three years bring a 60-day disqualification; a third or subsequent within three years brings 120 days.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.51(c) Table 2 — second conviction column
Question 26
A third serious traffic violation within three years disqualifies a CDL holder for:
- A.60 days
- B.90 days
- C.120 days
- D.180 days
Show answer & explanation
Answer: C. 120 days
The third (or any subsequent) serious traffic violation in separate incidents within a three-year window means a 120-day disqualification.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.51(c) Table 2 — third conviction column
Question 27
Texting while driving a CMV, in violation of a state or local traffic law, counts as:
- A.A warning-only offense on first conviction
- B.A serious traffic violation
- C.A major offense with one-year disqualification
- D.An equipment violation
Show answer & explanation
Answer: B. A serious traffic violation
Texting while driving a CMV is listed among the serious traffic violations — repeat convictions within three years trigger the 60-day/120-day disqualifications.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.51(c) Table 2 (9) — texting while driving
Question 28
Driving a CMV without having your CLP or CDL in your possession is classified as:
- A.A parking-class infraction
- B.A serious traffic violation
- C.A major offense
- D.Not a violation if the license is valid
Show answer & explanation
Answer: B. A serious traffic violation
Driving a CMV without the CLP/CDL in your possession is a serious traffic violation. (It can be dismissed if you prove to the enforcing authority that you held a valid license on the day of the citation.)
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.51(c) Table 2 (7) — license not in possession
Question 29
Driving a CMV without the proper class of license or required endorsements for that vehicle or cargo is:
- A.A serious traffic violation
- B.Legal for trips under 50 miles
- C.A major offense with lifetime disqualification
- D.Only an issue during roadside inspections
Show answer & explanation
Answer: A. A serious traffic violation
Operating outside your license class or without required endorsements is a serious traffic violation under Table 2 — the 60/120-day repeat-offense disqualifications apply.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.51(c) Table 2 (8) — improper class/endorsement
Question 30
Which of these is on the federal list of serious traffic violations for CDL holders?
- A.Following the vehicle ahead too closely
- B.Driving 5 mph over the speed limit
- C.An expired vehicle registration
- D.A first parking violation
Show answer & explanation
Answer: A. Following the vehicle ahead too closely
Following too closely sits alongside excessive speeding, reckless driving, and improper or erratic lane changes on the serious-traffic-violations list. Parking violations are explicitly excluded.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.51(c) Table 2 (4) — following too closely
Question 31
A driver's FIRST conviction for a railroad-highway grade crossing offense in a CMV brings a disqualification of:
- A.No less than 30 days
- B.No less than 60 days
- C.No less than 120 days
- D.No less than one year
Show answer & explanation
Answer: B. No less than 60 days
Grade-crossing offenses — like failing to slow and check the tracks, or starting across without room to clear — disqualify for at least 60 days on the first conviction, 120 days on the second, and a year on the third within three years.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.51(d) Table 3 — grade-crossing offenses
Question 32
Failing to have enough space to drive completely through a railroad crossing without stopping is:
- A.Permitted when traffic is heavy
- B.A grade-crossing offense that can disqualify your CDL
- C.Only a violation for hazmat carriers
- D.A serious traffic violation but never disqualifying
Show answer & explanation
Answer: B. A grade-crossing offense that can disqualify your CDL
Entering a crossing without room to clear it is one of the listed railroad-highway grade-crossing offenses — first conviction means at least a 60-day disqualification.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.51(d) Table 3 (4) — insufficient space at crossing
Question 33
A first conviction for violating a driver or vehicle out-of-service order disqualifies the driver for:
- A.No less than 90 days
- B.No less than 180 days and up to one year
- C.Exactly 30 days
- D.Life
Show answer & explanation
Answer: B. No less than 180 days and up to one year
Driving in violation of an out-of-service order is its own disqualification table: a first conviction is no less than 180 days and no more than one year.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.51(e) Table 4 (1) — out-of-service violations
Question 34
Violating an out-of-service order while hauling placarded hazardous materials (or driving a 16+ passenger vehicle) makes the first-conviction disqualification:
- A.The same as any OOS violation
- B.No less than 180 days and up to two years
- C.A flat 90 days
- D.Lifetime
Show answer & explanation
Answer: B. No less than 180 days and up to two years
The OOS table gets harsher for hazmat and passenger operations: a first conviction runs at least 180 days and up to two years.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.51(e) Table 4 (2) — OOS with hazmat/passengers
Question 35
An employer knows a driver (or their vehicle) is subject to an out-of-service order. The employer may:
- A.Dispatch the driver if the load is time-critical
- B.Not allow, require, or authorize the driver to operate a CMV
- C.Allow driving to the nearest terminal only
- D.Allow driving if the driver signs a waiver
Show answer & explanation
Answer: B. Not allow, require, or authorize the driver to operate a CMV
Employer responsibilities mirror the driver rules: no employer may allow, require, permit, or authorize CMV operation during an out-of-service order.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.37(d) — Employer responsibilities
Question 36
An employer discovers a driver holds licenses from two different states. The employer:
- A.Must not use the driver to operate a CMV during that period
- B.May use the driver if one license is surrendered within 90 days
- C.Has no responsibility — licensing is the driver's problem
- D.Must report the driver to local police
Show answer & explanation
Answer: A. Must not use the driver to operate a CMV during that period
Employers may not use a driver who has more than one CLP or CDL — the one-license rule is enforced on both sides of the employment relationship.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.37(c) — Employer responsibilities, multiple licenses
Question 37
By driving a commercial motor vehicle, a CLP or CDL holder is considered to have:
- A.Waived the right to legal counsel at roadside
- B.Consented to alcohol testing required by the state
- C.Agreed to random vehicle searches
- D.Accepted liability for cargo damage
Show answer & explanation
Answer: B. Consented to alcohol testing required by the state
Implied consent: holding (or being required to hold) a CLP/CDL and driving a CMV constitutes consent to the alcohol testing states use to enforce the refusal-to-test disqualification.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.72 — Implied consent to alcohol testing
Question 38
Which is true of how state CDL knowledge tests are constructed under the federal standards?
- A.Every test version asks identical questions in the same order
- B.Each test contains a set number of questions from each knowledge area
- C.Examiners may substitute oral interviews for the test
- D.States may skip knowledge areas they consider less important
Show answer & explanation
Answer: B. Each test contains a set number of questions from each knowledge area
Approved test-generation methods require each version to contain a set number of questions with a prescribed number drawn from each knowledge area — full coverage is mandatory, not optional.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.133(b)(2)(iv) — Knowledge test construction
Question 39
Leaving the scene of an accident while operating a CMV is classified as:
- A.A serious traffic violation (60-day disqualification)
- B.A major offense (one-year disqualification on first conviction)
- C.An administrative infraction
- D.A state-optional violation
Show answer & explanation
Answer: B. A major offense (one-year disqualification on first conviction)
Leaving the scene of an accident sits in Table 1 with the major offenses: one year for a first conviction (three if hazmat-placarded), lifetime for a second.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.51(b) Table 1 (5) — leaving the scene
Question 40
A CDL holder gets their FIRST serious traffic violation conviction, with a clean record before it. Under the federal table, the CDL disqualification is:
- A.None — federal disqualification starts at the second serious violation within 3 years
- B.An automatic 60 days
- C.An automatic 120 days
- D.30 days plus a retest
Show answer & explanation
Answer: A. None — federal disqualification starts at the second serious violation within 3 years
Table 2's disqualification columns begin at the SECOND serious traffic violation within three years (60 days) and escalate at the third (120 days). A first conviction carries state penalties but no federal CDL disqualification period.
Source: 49 CFR Part 383 — Commercial Driver's License Standards — §383.51(c) Table 2 — conviction-count columns

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OnRoute is an independent study aid based on the federal CDL standards (49 CFR Part 383), the FMCSA Entry-Level Driver Training theory curriculum (49 CFR Part 380 Appendix A), and related Federal Motor Carrier Safety Regulations. It is not affiliated with, endorsed by, or sponsored by the FMCSA, AAMVA, or any state driver licensing agency. CDL knowledge tests are administered by your state, and state-specific requirements may vary — always consult your state's CDL manual.

Getting Your CDL & Safe Operations Rules

A combination vehicle is a Group A commercial motor vehicle when its gross combination weight rating is 26,001 pounds or more and the towed unit's GVWR is:

A single vehicle (no trailer) requires a Class B CDL when its gross vehicle weight rating is at least:

A van that doesn't meet the Group A or B weight thresholds still requires a CDL (Group C) if it is designed to transport:

How many driver's licenses may a CMV operator hold at one time?

While a commercial learner's permit (CLP) holder drives on a public road, the accompanying CDL holder must:

Under the federal standards, a CLP holder must be at least:

Before receiving a CLP, an applicant must first pass which test for the vehicle they expect to operate?

Which endorsements may appear on a commercial learner's permit?

A driver wants to pull double trailers. Which endorsement must they obtain?

An applicant takes the CDL skills test in a vehicle without air brakes. What happens?

Taking the CDL skills test in a vehicle with an automatic transmission results in:

A CDL holder is convicted of a traffic violation (not parking) in another state. Within how many days must they notify the state that issued their license?

A driver's license is suspended by a state. Who must the driver notify?

A CDL holder is convicted of driving a CMV with an alcohol concentration of 0.04 or greater — a first offense. The disqualification period is:

For a first major offense (like DUI or leaving the scene) committed while the CMV was transporting placarded hazardous materials, the disqualification period becomes:

A second conviction for a major offense (e.g., a second DUI in separate incidents) disqualifies a CDL holder for:

Using a CMV in a felony involving manufacturing, distributing, or dispensing controlled substances results in:

May an employer assign a disqualified driver to drive a CMV?

To pass a CDL knowledge test, you must answer at least:

Where do the questions on your state's CDL knowledge test come from?

A commercial learner's permit may be valid for no more than how long from its initial issuance?

A CLP issued for six months may be renewed without retesting as long as:

Before a state may issue your first CDL, you must have:

For CDL disqualification purposes, "excessive speeding" means driving at least how far over the limit?

A CDL holder is convicted of a second serious traffic violation (separate incidents) within three years. The disqualification is:

A third serious traffic violation within three years disqualifies a CDL holder for:

Texting while driving a CMV, in violation of a state or local traffic law, counts as:

Driving a CMV without having your CLP or CDL in your possession is classified as:

Driving a CMV without the proper class of license or required endorsements for that vehicle or cargo is:

Which of these is on the federal list of serious traffic violations for CDL holders?

A driver's FIRST conviction for a railroad-highway grade crossing offense in a CMV brings a disqualification of:

Failing to have enough space to drive completely through a railroad crossing without stopping is:

A first conviction for violating a driver or vehicle out-of-service order disqualifies the driver for:

Violating an out-of-service order while hauling placarded hazardous materials (or driving a 16+ passenger vehicle) makes the first-conviction disqualification:

An employer knows a driver (or their vehicle) is subject to an out-of-service order. The employer may:

An employer discovers a driver holds licenses from two different states. The employer:

By driving a commercial motor vehicle, a CLP or CDL holder is considered to have:

Which is true of how state CDL knowledge tests are constructed under the federal standards?

Leaving the scene of an accident while operating a CMV is classified as:

A CDL holder gets their FIRST serious traffic violation conviction, with a clean record before it. Under the federal table, the CDL disqualification is: