7 Endorsements
1 Written test each
HZ Requires TSA background check

Not all endorsements apply to every CDL class. Use the CDL Selector to find what you need.

HZ
⚠️ CDL HazMat (H) Endorsement: Federally Required

Arizona Hazardous Materials Endorsement

When It's Required in Arizona

In Arizona (AZ), required to transport any quantity of hazardous materials that require placarding under federal HazMat regulations.

What to Study for the AZ Test

For the Arizona (AZ) Hazardous Materials test, study shipping papers, placard and label selection, safe loading and segregation, emergency response procedures, and security-awareness requirements under federal law.

Hazardous Materials in Arizona (AZ)

  • Semiconductor and electronics distribution: cleaning agents, batteries, and other placarded retail freight
  • Construction materials: roofing, coatings, and compressed-gas deliveries to job sites
  • Cross-border freight: placarded cross-border freight with the extra paperwork it requires
TK
🛢️ CDL Tank (N) Endorsement: Common Add-on

Arizona Tank Vehicles Endorsement

When It's Required in Arizona

In Arizona (AZ), required for vehicles designed to transport liquids or gases in a tank permanently or temporarily attached to the vehicle, with individual tank capacity of more than 119 gallons.

What to Study for the AZ Test

For the Arizona (AZ) Tank Vehicles test, study liquid surge and baffled tanks, outage allowances, inspections, high-center-of-gravity handling, and rollover prevention strategies.

Tank Vehicles in Arizona (AZ)

  • Semiconductor and electronics distribution: beverage, dairy, and food-grade liquid tankers
  • Agriculture produce: juice, wine, and liquid food tankers where the crop calls for it
PS
🚌 CDL Passenger (P) Endorsement

Arizona Passenger Endorsement

When It's Required in Arizona

In Arizona (AZ), required for commercial vehicles designed to carry 16 or more passengers including the driver: charter buses, transit coaches, and similar vehicles.

What to Study for the AZ Test

For the Arizona (AZ) Passenger test, study passenger safety protocols, controlled loading and unloading, emergency door operation, on-road passenger management, and distracted-driving rules.

Passenger in Arizona (AZ)

  • Agriculture produce: farm labor crew buses carrying 16 or more workers
  • Transit agencies, charter companies, and church or community buses across Arizona
SB
🚐 CDL School Bus (S) Endorsement

Arizona School Bus Endorsement

When It's Required in Arizona

In Arizona (AZ), required for any driver transporting school-age students in a vehicle classified as a school bus under federal or state law.

What to Study for the AZ Test

For the Arizona (AZ) School Bus test, study student loading zones, stop-signal arm procedures, railroad crossing rules, mirror adjustment, emergency evacuation drills, and state-specific school bus regulations.

School Bus in Arizona (AZ)

  • Arizona school districts and their contractors: every route driver needs S plus P
  • Activity and athletics trips, which use the same S-endorsed drivers
DT
🚚 CDL Doubles/Triples (T) Endorsement

Arizona Doubles & Triples Endorsement

When It's Required in Arizona

In Arizona (AZ), required to pull double or triple trailers where permitted by state law. Common in regional and long-haul freight operations.

What to Study for the AZ Test

For the Arizona (AZ) Doubles & Triples test, study coupling and uncoupling double and triple combinations, pull-out stability, off-tracking behavior, full combination inspections, and safe following distance.

Doubles & Triples in Arizona (AZ)

  • Semiconductor and electronics distribution: twin 28-foot LTL trailer sets on the interstates
AB
🛑 CDL Air Brakes Test: Most Drivers Need It

Arizona Air Brakes Endorsement

When It's Required in Arizona

In Arizona (AZ), required for any vehicle equipped with an air brake system, which covers most Class A tractor-trailers and many Class B straight trucks.

What to Study for the AZ Test

For the Arizona (AZ) Air Brakes test, study air brake components, dual-circuit systems, inspection procedures, warning devices, pressure gauges, and stopping distance at highway speeds.

Air Brakes in Arizona (AZ)

  • Construction materials: dump trucks, mixers, and flatbed tractors on construction routes
  • Almost every Class A and Class B vehicle in Arizona; skip this test and your CDL carries an L restriction
CV
🚛 CDL Combination Vehicles Test: Class A Essential

Arizona Combination Vehicles Endorsement

When It's Required in Arizona

In Arizona (AZ), essential for Class A drivers operating tractor-trailers, lowboys, and other multi-unit combinations over federal weight thresholds.

What to Study for the AZ Test

For the Arizona (AZ) Combination Vehicles test, study coupling and uncoupling procedures, air line connections, trailer handling characteristics, off-tracking, and full combination vehicle inspections.

Combination Vehicles in Arizona (AZ)

  • Semiconductor and electronics distribution: regional and over-the-road tractor-trailer distribution runs
  • Construction materials: flatbed and step-deck loads of steel, lumber, and building materials
  • Agriculture produce: refrigerated produce loads to distribution centers and out of state
  • Cross-border freight: international tractor-trailer lanes

Next steps

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