Arizona (AZ) CDL manual 2026

Practice the manual, chapter by chapter

State manuals are built on the same national model, chapter for chapter. One thing to know from each chapter, then real questions from it to answer — tap an option to check yourself.

1. 1

   Introduction

   Everyone

   You will lose your CDL for at least 60 days for your first railroad-highway grade crossing violation.

   Your personal vehicle license is revoked for an alcohol violation. How long do you lose your CDL?

   1. AThree years
   2. BOne year
   3. C120 days
   4. D60 days

   What is the penalty for a third railroad crossing violation within three years?

   1. AAt least one year
   2. BAt least three years
   3. CAt least 180 days
   4. DAt least 120 days
   This chapter has 26 more questions. Practice them in the app and see your pass chance.
2. 2

   Driving Safely

   Everyone

   Before you back into an area, get out and check for overhanging objects such as trees, branches, or electric wires; it is easy to miss seeing them while you are backing.

   What must be confirmed before you open the engine compartment in Step 2?

   1. AThat the parking brakes are on or wheels chocked
   2. BThat the engine has cooled for ten minutes
   3. CThat the transmission is in its highest gear
   4. DThat the battery has been disconnected

   Why do experienced drivers avoid backing their commercial vehicle whenever they can?

   1. ABacking uses far more fuel than moving the same distance forward
   2. BBacking is prohibited on most public roadways by state law
   3. CBacking wears out the clutch and transmission very quickly
   4. DYou cannot see everything behind you, so backing is always dangerous
   This chapter has 290 more questions. Practice them in the app and see your pass chance.
3. 3

   Transporting Cargo Safely

   Everyone

   Proper tie-down equipment must be used, including ropes, straps, chains, and tensioning devices such as winches, ratchets, and clinching components.

   What does Gross Vehicle Weight Rating describe?

   1. AThe combined weight of a power unit and its trailer
   2. BThe weight transmitted to the ground by one axle
   3. CThe actual weight of the vehicle as loaded today
   4. DThe manufacturer's loaded weight for a single vehicle

   Which cargo responsibility remains yours even when someone else loads the vehicle?

   1. ADetermining the freight class for billing
   2. BRecognizing overloads and poorly balanced weight
   3. CChoosing the route the shipment will take
   4. DSelecting the packaging the freight travels in
   This chapter has 26 more questions. Practice them in the app and see your pass chance.
4. 4

   Transporting Passengers

   P endorsement (bus)

   Posted curve speeds may be safe for cars in good weather but too fast for buses, especially on wet or slick pavement.

   Your coach is low on fuel mid-trip and a truck stop is ahead. What is the general rule about refueling while your passengers remain in their seats?

   1. AIt is required so that riders can be counted easily
   2. BIt is fine whenever the stop lasts under ten minutes
   3. CAvoid it unless doing so is absolutely necessary
   4. DIt is allowed if at least one exit door stays open

   You have finished loading at a curbside stop and are ready to rejoin traffic in your transit bus. What should you do first?

   1. ASound the horn twice to warn the vehicles behind you
   2. BTurn on the interior lights so riders can see the aisle
   3. CAccelerate briskly to match the speed of passing cars
   4. DCheck your mirrors for traffic, cyclists, and pedestrians
   This chapter has 98 more questions. Practice them in the app and see your pass chance.
5. 5

   Air Brakes

   Any vehicle with air brakes

   Release the parking brakes so you can move the slack adjusters.

   How is supply pressure displayed on a vehicle with a dual air brake system?

   1. AA gauge for the primary system and a warning lamp for the secondary
   2. BOne gauge showing the lower of the two systems
   3. CA gauge for each half, or one gauge with two needles
   4. DOne gauge showing the combined total of both systems

   You climb into an air-braked truck and cannot find an application pressure gauge. What does that mean?

   1. AThe vehicle uses wedge brakes instead of s-cam brakes
   2. BThe vehicle has a single rather than dual air system
   3. CThe gauge is not fitted to all vehicles
   4. DThe gauge has been removed and must be replaced
   This chapter has 147 more questions. Practice them in the app and see your pass chance.
6. 6

   Combination Vehicles

   Class A

   Raise the trailer landing gear slightly off the ground, then pull the tractor gently forward with the trailer brakes locked to check the coupling.

   After the fifth wheel jaws lock during coupling, how do you confirm the connection with a tug test?

   1. APull forward gently in low gear with the trailer brakes locked
   2. BBack up firmly once more to reseat the kingpin
   3. CShake the release handle while a helper watches the jaws
   4. DRock the trailer sideways using the steering axle

   While backing into a dock you lose track of how much room remains behind the trailer. What should you do?

   1. AStop, get out, and walk back to look at the space
   2. BRely on the convex mirror to judge the remaining distance
   3. CSound the horn and keep backing at a steady speed
   4. DContinue slowly and stop when you feel light contact
   This chapter has 118 more questions. Practice them in the app and see your pass chance.
7. 7

   Doubles and Triples

   T endorsement

   After locking the pintle hook, secure the dolly support in the raised position before pulling the dolly into place.

   A converter dolly has no spring brakes. How do you release its brakes so it can be moved into position?

   1. AOpen the petcock on the dolly air tank
   2. BPull the release arm on the dolly's fifth wheel
   3. CPush in the trailer air supply knob on the tractor dash
   4. DCrank the dolly landing gear to its fully raised stop

   Which air lines must continue past the converter dolly to reach the second trailer of a set of doubles?

   1. ANeither; the dolly's tank supplies the rear trailer
   2. BBoth the service line and the emergency line
   3. COnly the service line
   4. DOnly the emergency line
   This chapter has 98 more questions. Practice them in the app and see your pass chance.
8. 8

   Tank Vehicles

   N endorsement

   Tank vehicles need increased following distance because surge extends stopping distance.

   Inside cargo tanks, what is the key structural difference between a bulkhead and a baffle?

   1. AA bulkhead is removable for cleaning, while a baffle is welded in place
   2. BA bulkhead is solid and seals off compartments; a baffle has holes that let liquid pass
   3. CA bulkhead runs lengthwise along the tank, while a baffle runs across it
   4. DA bulkhead strengthens the tank shell, while a baffle only supports the piping

   At a rest stop you notice product dripping from underneath your cargo tank. What should you do?

   1. ADrive slowly to the delivery point so the load is off before repairs
   2. BTighten the nearest fitting and continue the trip if the drip slows down
   3. CKeep the vehicle parked and get the leak handled; never drive a leaking tank
   4. DContinue the trip but stay on rural roads away from heavy traffic
   This chapter has 62 more questions. Practice them in the app and see your pass chance.
9. 9

   Hazardous Materials

   H endorsement

   Placarded vehicles must avoid heavily populated areas, crowds, tunnels, narrow streets, and alleys when a practical alternative exists.

   What equipment must a driver hauling chlorine in cargo tanks carry?

   1. AA self-contained breathing apparatus and a spill berm
   2. BAn approved gas mask and a dome cover leak kit
   3. CA chemical suit and an absorbent pillow kit
   4. DA respirator cartridge set and a neutralizing agent

   Special cargo heater rules apply when loading which three classes?

   1. AClasses 1, 2.1, and 3
   2. BClasses 4.1, 4.2, and 4.3
   3. CClasses 6, 7, and 9
   4. DClasses 2.2, 5, and 8
   This chapter has 234 more questions. Practice them in the app and see your pass chance.
10. 10

    School Buses

    S endorsement

    The dome light should be on while loading in the dark.

    A student who just exited your bus drops a book, and it slides underneath the bus. What should the student have been taught to do?

    1. ALeave the item, move away from the bus, and get the driver's attention for help
    2. BCrawl under the bus quickly while the red lights are still flashing
    3. CWait quietly beside the rear wheels until the driver finishes the route
    4. DKnock on the service door and reach beneath the bumper for the item

    What does a sign mounted below the cross-buck tell you?

    1. AThe speed limit for crossing the tracks
    2. BThe number of tracks at the crossing
    3. CThe name of the railroad operating the line
    4. DThe distance to the next crossing
    This chapter has 98 more questions. Practice them in the app and see your pass chance.
11. 11

    Pre-Trip Vehicle Inspection

    Everyone (skills test)

    Inspect that there are no bent, broken, or missing studs.

    Which kit, besides the first aid kit, must a school bus carry?

    1. AA window breakage kit
    2. BA body fluid cleanup kit
    3. CA tire repair kit
    4. DA spill containment kit

    What must be true of the lug nuts on every wheel?

    1. AAll fitted with locking washers
    2. BAll of the same manufacturer
    3. CAll present and not loose
    4. DAll torqued within the past 30 days
    This chapter has 200 more questions. Practice them in the app and see your pass chance.

The official Arizona CDL manual