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

New Mexico Hazardous Materials Endorsement

When It's Required in New Mexico

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

What to Study for the NM Test

For the New Mexico (NM) 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 New Mexico (NM)

  • Oil and gas field services: fuel, propane, and oilfield chemical deliveries that require placards (X endorsement with Tank)
  • Copper mining: blasting agents and mine chemicals moving under placards
TK
🛢️ CDL Tank (N) Endorsement: Common Add-on

New Mexico Tank Vehicles Endorsement

When It's Required in New Mexico

In New Mexico (NM), 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 NM Test

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

Tank Vehicles in New Mexico (NM)

  • Oil and gas field services: crude, condensate, and fuel tankers serving the oil and gas fields
  • Chile and agriculture: juice, wine, and liquid food tankers where the crop calls for it
PS
🚌 CDL Passenger (P) Endorsement

New Mexico Passenger Endorsement

When It's Required in New Mexico

In New Mexico (NM), 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 NM Test

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

Passenger in New Mexico (NM)

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

New Mexico School Bus Endorsement

When It's Required in New Mexico

In New Mexico (NM), 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 NM Test

For the New Mexico (NM) 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 New Mexico (NM)

  • New Mexico 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

New Mexico Doubles & Triples Endorsement

When It's Required in New Mexico

In New Mexico (NM), 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 NM Test

For the New Mexico (NM) 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 New Mexico (NM)

  • Copper mining: double-trailer bulk sets hauling coal, aggregate, and ore where permitted
AB
🛑 CDL Air Brakes Test: Most Drivers Need It

New Mexico Air Brakes Endorsement

When It's Required in New Mexico

In New Mexico (NM), 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 NM Test

For the New Mexico (NM) 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 New Mexico (NM)

  • Oil and gas field services: nearly every oilfield truck runs air brakes
  • Military and aerospace logistics: the heavy-haul tractors and straight trucks on aerospace plant routes
  • Copper mining: every heavy-haul and bulk truck on the mine roads
  • Almost every Class A and Class B vehicle in New Mexico; skip this test and your CDL carries an L restriction
CV
🚛 CDL Combination Vehicles Test: Class A Essential

New Mexico Combination Vehicles Endorsement

When It's Required in New Mexico

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

What to Study for the NM Test

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

Combination Vehicles in New Mexico (NM)

  • Oil and gas field services: tractor-trailer rigs hauling pipe, rig equipment, and frac sand
  • Military and aerospace logistics: oversize aircraft sections and aerospace components on specialized flatbed and step-deck trailers
  • Copper mining: lowboys and heavy-haul combinations moving mining equipment
  • Chile and agriculture: refrigerated produce loads to distribution centers and out of state

Next steps

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