Alabama · CDL

Alabama CDL Practice Test

The Alabama CDL knowledge test is administered by Alabama Law Enforcement Agency. This free practice test covers the 10 areas the Alabama Commercial Driver License Manual teaches, from inspection and safe start to hazmat and school bus, with 100 questions written for Alabama and every answer explained. Pick 25, 50, or 100 questions and start; there is no sign-up.

Start freeSee what is on the test
Free practice test

Take the Alabama CDL practice test

The Alabama bank holds 100 questions written for the Alabama Commercial Driver License Manual (2005 CDL Testing System, Version July 2017; Alabama issue dated December 1, 2023), 2 of them illustrated with a sign, signal, marking, or road scene. Choose a Quick check of 25, a Practice run of 50, or the Full challenge of 100 on the next screen, then choose coaching mode, which explains every answer as you go, or exam mode, which holds the explanations until the end and still shows your running score. It is free, there is no sign-up, and a test in progress is saved on this device.

Start the Alabama practice test
Sample questions

Six questions from the Alabama bank, with the rule behind each answer

Sample 1 · Inspection And Safe Start

A carrier's maintenance team serviced an Alabama truck overnight. Before departure, who still has the duty to decide whether the truck is safe to operate?

  1. The commercial driverCorrect
  2. Only the maintenance supervisor
  3. The shipper who owns the cargo
  4. The previous shift's driver

Why: The commercial driver remains responsible for the vehicle's safe condition and operation, including finding defects that could cause a breakdown or crash. Therefore, the proposed supported response is "The commercial driver".

Sample 2 · Speed Space And Road Conditions

Which components must an Alabama CDL driver combine when estimating the full distance needed to stop?

  1. Perception, reaction, and braking distancesCorrect
  2. Mirror, signal, and lane-change distances
  3. Acceleration, coasting, and parking distances
  4. Cargo, axle, and bridge distances

Why: Total stopping distance consists of perception distance, reaction distance, and braking distance. Therefore, the proposed supported response is "Perception, reaction, and braking distances".

Sample 3 · Cargo Safety

A sealed trailer was loaded by warehouse employees. Which cargo-safety responsibility still belongs to the Alabama CDL driver?

  1. Verify the duties that remain observable, including weight, balance, and securement conditionCorrect
  2. Accept every sealed load without any cargo-related check
  3. Transfer all load responsibility to the shipper
  4. Inspect cargo only after reaching the destination

Why: The driver is responsible for inspecting cargo and securement, recognizing overloads or poor balance, and knowing that the load does not obstruct safe operation. Therefore, the proposed supported response is "Verify the duties that remain observable, including weight, balance, and securement condition".

Sample 4 · Passenger Safety

An Alabama vehicle is designed for 16 occupants when the driver is counted. Which specialized CDL privilege is required?

  1. A doubles and triples endorsement
  2. No endorsement because the driver is included
  3. A passenger endorsementCorrect
  4. A tank endorsement

Why: A driver needs a passenger endorsement to operate a vehicle designed to transport 16 or more people, including the driver. Therefore, the proposed supported response is "A passenger endorsement".

Sample 5 · Combination Vehicles

Which loading and driving combination gives an Alabama tractor-trailer the best rollover margin?

  1. Rear-heavy cargo with late braking
  2. Cargo stacked to one side with fast curve entry
  3. Low centered cargo with slow, smooth curve entryCorrect
  4. High cargo with abrupt steering

Why: Rollover risk is reduced by keeping cargo centered and as low as practical and by entering curves slowly with smooth steering. Therefore, the proposed supported response is "Low centered cargo with slow, smooth curve entry".

Sample 6 · Hazmat And School Bus

May an Alabama CLP holder transport a load that requires hazardous-material placards?

  1. Yes, if another driver follows in a separate vehicle
  2. Yes, whenever the shipment weighs less than 26,001 pounds
  3. No, the required CDL and hazardous-materials endorsement must be in placeCorrect
  4. Yes, if the route stays within Alabama

Why: A driver must hold a CDL with the required hazardous-materials endorsement before transporting a shipment that requires placards; a commercial learner's permit alone does not authorize that transportation. Therefore, the proposed supported response is "No, the required CDL and hazardous-materials endorsement must be in place".

What is on the test

The 10 topics the Alabama CDL practice test covers

These are Alabama's own topic areas, from inspection and safe start to hazmat and school bus, each with 10 questions. Under each one are two questions from the bank, shown without their answers; the practice test explains every one of them.

  1. Inspection And Safe Start10 questions
    • During a pre-trip check, which tread measurement meets the manual's minimum for a front steering tire?
    • An Alabama bus has a retreaded tire mounted on its steering axle. How should the driver treat that condition before carrying passengers?
  2. Control Visibility And Communication10 questions
    • Why should a CDL driver select the needed transmission range before entering a demanding maneuver?
    • Two otherwise equal dock approaches are available. Which one gives the truck driver the safer backing view?
  3. Speed Space And Road Conditions10 questions
    • Rain has changed a dry Alabama roadway to a uniformly wet surface. What starting adjustment does the manual suggest?
    • A manual-transmission truck begins hydroplaning with open space ahead. Which response protects tire contact?
  4. Hazards Emergencies And Driver Fitness10 questions
    • While moving through Alabama traffic, may a CMV driver type a routine dispatch update on a handheld phone?
    • What visibility limit should control a commercial vehicle's nighttime speed?
  5. Cargo Safety10 questions
    • By what point in a trip must a driver make the first en-route cargo-securement recheck?
    • Which event triggers another cargo-securement inspection even when the load has shown no obvious movement?
  6. Passenger Safety10 questions
    • Which tire finding blocks a bus from beginning its route?
    • The rear emergency door will not latch after the pre-trip check. What should the passenger-vehicle driver do?
  7. Air Brakes10 questions
    • Which three functions make up the commercial air-brake system described in the Alabama manual?
    • At roughly what reservoir pressure should a typical governor place the compressor into cut-out?
  8. Combination Vehicles10 questions
    • Why should lane changes with a multi-unit combination use gradual steering inputs?
    • Why should a bobtail tractor receive extra stopping space even though it carries little or no cargo?
  9. Doubles Triples And Tank Vehicles10 questions
    • During an abrupt avoidance move with doubles, which unit faces the greatest rollover exposure from rearward amplification?
    • A doubles set contains one heavily loaded and one lightly loaded semitrailer. How should they be ordered?
  10. Hazmat And School Bus10 questions
    • What is the longest routine interval between required recurrent hazardous-materials training sessions?
    • A shipper offers a hazardous-material drum with liquid visible around its closure. What must the driver do?
How to prepare

A study plan for the Alabama CDL knowledge test

1

Find out where you stand

Take a Quick check of 25 in coaching mode. Read each explanation, including the ones you got right; it tells you the rule Alabama tests, not just the answer.

2

Study the topics you missed

Your account's Study tab ranks the 10 topics by your results. Read that chapter of the Alabama Commercial Driver License Manual, then take another Quick check to confirm the gap has closed.

3

Rehearse the real thing

Take the Full challenge of 100 in exam mode. Aim for 80 percent or better twice in a row; at that point you are answering from the rules, not from memory of the questions.

Questions

Alabama CDL practice test questions

Is this the official Alabama CDL knowledge test?

No. DMV Exam Pass is an independent study service and is not affiliated with Alabama Law Enforcement Agency. The questions are written in the style of the exam to prepare you for it; the official test is taken with the agency.

What does the Alabama CDL practice test cover?

The 100 questions are spread evenly across 10 topics: Inspection And Safe Start, Control Visibility And Communication, Speed Space And Road Conditions, Hazards Emergencies And Driver Fitness, Cargo Safety, Passenger Safety, Air Brakes, Combination Vehicles, Doubles Triples And Tank Vehicles, and Hazmat And School Bus. Every test you take draws from all of them, so a weak area shows up quickly.

How many questions are in the practice test, and how long does it take?

The Alabama bank holds 100 questions. A Quick check of 25 takes about ten minutes, a Practice run of 50 about twenty, and the Full challenge of 100 about forty. You can pause any time.

Are these the real questions from the Alabama exam?

No. Nobody outside the agency has the real questions, and we do not use, claim, or advertise leaked or exact exam questions. These are independently written questions that test the same rules, so what you learn transfers to whatever the real test asks.

Which handbook should I study for the Alabama CDL knowledge test?

The Alabama Commercial Driver License Manual (2005 CDL Testing System, Version July 2017; Alabama issue dated December 1, 2023), published by Alabama Law Enforcement Agency. Every question here is written for it, and each explanation names the rule, so when you miss a question you know which chapter to read.

What is the difference between coaching mode and exam mode?

Coaching mode shows whether each answer was right, and why, before you move on; it is for learning. Exam mode holds the explanations and the correct choices until the end and still shows your running score; it is for checking readiness. Both draw from the same bank, and scoring happens on our servers, so no answer key is loaded in your browser.

Does the practice test include road signs and pictures?

Yes. 2 of the 100 questions are illustrated with a sign, signal, marking, or road scene, the way the CDL knowledge test presents them.

Is the Alabama practice test free, and do I need an account?

It is free, with no sign-up. An optional account saves your progress across devices and shows which topics need work.

Can I pause and come back later?

Yes. A test in progress is saved on this device and offered again when you return. With an account, it is saved to your account as well, so you can continue on another device.

What score should I aim for before test day?

Aim for 80 percent or better on a Full challenge in exam mode, more than once. The official passing score is set by the agency; scoring consistently above 80 here means you are answering from the rules rather than from luck.