New Mexico's CDL manual and DMV CDL Practice Tests

for all endorsements

New Mexico's CDL Manual

Commercial Driver Handbook

CDL Classes in New Mexico First things first — you must decide which CDL class you need/want. In New Mexico, you have 3 class options, namely:

  • Class A CDL
  • Class B CDL
  • Class C CDL

CDL Endorsements in New Mexico Endorsements show that you completed additional training for specific vehicles or loads. Now, there are 6 endorsements available to New Mexico commercial drivers. NOTE: Each endorsement requires a separate written exam, and some affect your CDL road test.

CDL Requirements in New Mexico Before we get into the steps of obtaining your CDL, let’s make sure you meet New Mexico’s eligibility requirements. The list below details these. See how many apply to you:

  • You are at least 18 years old (to drive intrastate) or 21 years old (to drive interstate)
  • You have a New Mexico-issued driver’s license
  • Your driving privileges are active — you must address suspensions, cancellations, and revocations before applying for a CDL
  • You have U.S. citizenship or at least permission to work in the country
  • You comply with the FMCSA’s health and medical standards
  • You are proficient in English (enough to read and speak the language)

Getting your commercial license involves two parts:

  • Getting a permit (CLP)
  • Getting your license (CDL)

How many questions are on the CDL test in New Mexico? The CDL written test contains 50 items. You need to answer everything in an hour. To pass, you need to get 40 questions right. How many times can you take the CDL permit test in New Mexico? New Mexico doesn’t have a limit for CDL written exams. However, you can only take it twice every seven days. How long is the New Mexico CDL driving test? You’ll spend around two hours completing your New Mexico CDL road test. This includes three parts:

  • Pre-trip inspection
  • Off-road driving test
  • On-road driving test

DMV CDL Practice Tests

General Knowledge

The general knowledge test is the first of several tests that you will have to complete in order to get your CDL. The questions cover general information about commercial vehicles, driving, and vehicle inspections. The test has a total of 50 questions, and requires at least 40 correct answers to pass.

Air Brakes

You must have an Air brake endorsement on your driver's license to drive a vehicle equipped with an air brake system. This test will test your knowledge of the function, parts, and braking distance of air brakes. The test will consist of 25 questions, and at least 20 correct answers are needed to pass.


The combination endorsement allows you to drive a vehicle with a power unit and one trailer. This test will cover the "ins and outs" of operating articulated vehicles. The exam consists of 25 questions, and requires at least 20 correct to pass.

Hazardous Material

The Hazardous Material endorsement allows the driver to operate a vehicle containing items such as poisons, explosives, flammables, etc. You will also have to pass the TSA Hazardous Material Threat Assessment to get this endorsement. There are 30 questions, 24 correct required to pass.


The Tanker endorsement allows the driver to operate a vehicle weighing more than 26,000 pounds designed to transport any liquid or gaseous material within a tank that is permanently or temporarily attached to the vehicle. There are 20 questions, 16 correct required to pass.

Doubles / Triples

The Doubles/Triples endorsement is required for drivers to pull 2 trailers (doubles) or 3 trailers (triples) connected to a single power unit. There are 20 questions on this test, and 16 correct answers are required to pass.


Bus drivers must have a commercial driver's license with a passenger endorsement in order to operate a vehicle which seats 16 or more, including the driver. There are 20 questions on this test, and 16 correct answers are required to pass.

School Bus

School Bus Endorsement is required for any driver who operates a school bus. After the permit tests the training can be only completed by a local school district. There are 20 questions on this test, and 16 correct answers are required to pass.

Pre Trip Inspection

The Pre-Trip exam is an oral exam where you are expected to check the vehicle parts to insure it is safe for road use. The amount of parts you need to check increase with the size of the vehicle, and by type of vehicle.