What Are CDL Endorsement Codes and Why They Matter

If you are considering a Commercial Driver’s License or already have one, the knowledge of the CDL endorsement code is quite indispensable. These endorsements grant special driving privileges, enabling one to drive specific types of vehicles or transport certain kinds of cargo, from school buses to hazardous materials and more. The right endorsements can unlock more driving opportunities, open higher-paying job opportunities, and even bring more flexibility to the trucking industry. Let’s have a look at the breakdown of all CDL endorsements and prepare for your future!

What is a CDL endorsement?

A CDL endorsement is another qualification added to your CDL that will permit you to drive a specific kind of commercial vehicle or to carry specific goods. This ensures that drivers are further trained in handling larger, more sensitive, or even complex cargo. Depending on the particular endorsement, you might need to undergo further training, tests, and background checks; requirements also vary depending on the state.

List all different types of CDL endorsement codes

Each endorsement code under a CDL authorizes the driver to operate a specific class of vehicles or transport a particular cargo. The fundamental CDL endorsement codes are listed below, with what each means and what they require.

P: Passenger transport

The Passenger (P) endorsement is required to operate vehicles carrying 16 or more passengers, such as buses or large shuttle vehicles. You will be required to pass a written knowledge test as well as a skills test showing that you can safely transport passengers.

S: School bus

The School bus (S) endorsement is required for driving a school bus. This endorsement requires passing a comprehensive written knowledge test, including subjects involving school bus operations, a background check, and a skills test. The safety standards and protocols for school bus drivers are unlike any other commodity and people transportation; this license is needed for transporting children.

H: Hazardous materials

The Hazardous Materials (H) endorsement applies to carriers of hazardous substances, such as chemicals, gases, or flammable liquids. The endorsement requires a federal background check by the TSA and a written examination of hazardous materials handling and safety.

T: Double/triple trailers

The Double/triple trailers (T) endorsement is an endorsement that allows the driver to pull two or three trailers. The class should be ideal for any driver who wishes to drive longer rigs and carry as much cargo as possible. This will involve passing a written test on the handling of double and triple trailer combinations, especially on safety protocols when handling an extra trailer or more.

N: Tank vehicle

The Tank vehicle (N) endorsement allows drivers to operate tank vehicles used to transport liquid or gas cargo. Applications of this are persons who carry fuel, water, or any other liquid. As such, drivers have to get this endorsement by taking a written test regarding safety procedures in operating a tank vehicle.

X: Combination of tank vehicle and hazardous materials endorsements

The X endorsement: combining hazardous materials and tank vehicles allows drivers to transport hazardous materials in a tank vehicle. The combination of the H and the N endorsements combines the two knowledge and qualification requirements: You will need to pass both the hazmat and tank vehicle knowledge tests and a TSA background check.

How to add endorsements to CDL?

Adding an endorsement to your CDL can be done by following these steps, which vary depending on the type of endorsement:

Step 1: Meet eligibility requirements

Check to see that you meet whatever basic qualifications are required to get the endorsement you want. For example, to add hazardous materials endorsement, you may need to be old enough and pass a background check.

Step 2: Get ready for the knowledge test

Each endorsement requires you to pass a written test. The number of questions and time limit differ from endorsements but the passing score is generally 80%.

Step 3: Take a skills tests (if required)

Some endorsements, like Passenger and School Bus, require you to take a skills test, in addition to the knowledge test. Three parts involved are: Pre-trip inspection, Basic vehicle control and On-road test.

Step 4: Pay the fee

There is a fee for each type of endorsement, and the price varies by state. Check with your DMV for the current fee amount.

After successfully completing all the steps, your wish endorsements will be added to your CDL so you can be confident to conquer your road!

FAQs

1. Which CDL endorsements require a class A CDL?

Common endorsements for a Class A CDL are T-for double/triple trailers, N-for tank vehicles, H-for hazardous materials, and X-for combined hazardous materials and tank vehicles.

2. How many endorsements does a CDL have?

There are 6 CDL endorsements, which are: P (passenger transport), S (school bus), H (hazardous materials), T (doubles/triples), N (tank vehicle), and X (tank vehicle & hazmat).

3. Which endorsement can you add for each CDL class?

• Class A CDL: All endorsements can be added.
• Class B CDL: Requires endorsements, normally P, S, H, X, and N.
• Class C CDL: Most often utilized for endorsements S, P, and H transporting specific vehicles and cargo.

4. Can I add an endorsement to my CDL online?

No. Most states do not accept complete online applications for certain CDL endorsements, such as knowledge tests. You could be asked to take your tests and seek final approval at a local DMV.

5. Do you need a CDL to get a hazmat endorsement​?

Yes, to get a hazardous materials endorsement, you should have a valid CDL. Through the TSA background check and also through another hazmat knowledge test, it is assured that only qualified CDL holders are able to transport hazardous substances.

Final thoughts

The CDL endorsements are very vital in extending the type of vehicles and cargo you are allowed to handle as a commercial driver. Knowing what each CDL endorsement code is, how to qualify, and what it entails in your career will definitely help you grasp the best of opportunities when they present themselves. You could become even more versatile and competitive within the trucking industry with just the right additions. Best wishes as you move forward with confidence!