CDL Licensing

Mississippi Endorsements for CDLs

3 min read

Commercial drivers in Mississippi often need more than just a basic Commercial Driver’s License (CDL) to operate specialized vehicles or perform specific tasks. CDL endorsements allow drivers to carry out these specialized functions legally. Each endorsement requires additional testing and, in some cases, background checks or certifications.

Types of CDL Endorsements in Mississippi

Mississippi recognizes several CDL endorsements, each authorizing different types of commercial vehicle operation:

T (Double/Triple Trailers): Required to pull double or triple trailers. A knowledge test is required.
P (Passenger): Allows drivers to operate vehicles designed to carry 16 or more passengers. Requires both a knowledge and skills test.
S (School Bus): This is a subtype of the passenger endorsement, specific to school buses. It requires both P and S endorsements, along with a background check and specialized training.
N (Tank Vehicles): Needed for vehicles that haul liquid or gaseous materials in tanks. A knowledge test is required.
H (Hazardous Materials): Required for transporting hazardous materials. Includes a knowledge test and a Transportation Security Administration (TSA) background check.
X (Combination of Tank and Hazmat): This is a combination of N and H endorsements.

Each of these endorsements must be added to a valid Mississippi CDL through application at a licensed testing facility or a Mississippi Department of Public Safety (DPS) office.

Testing and Application Requirements

To apply for a CDL endorsement in Mississippi, drivers must already hold a valid CDL or be in the process of obtaining one. Depending on the endorsement, the requirements include:

Passing a written knowledge test at a DPS office
Passing a skills test (for P and S endorsements)
Completing a TSA background check (for H and X endorsements)
Submitting proof of U.S. citizenship or lawful permanent residency (for Hazmat endorsements)
Paying the appropriate endorsement fees

For full steps on applying for a Mississippi CDL, see How to Obtain a Mississippi CDL.

Hazmat and TSA Requirements

The Hazmat endorsement (H) is highly regulated due to the potential risks involved. Applicants must:

Complete a Security Threat Assessment through the TSA, including fingerprinting
Provide proof of identity and legal presence
Pass a Hazmat-specific written knowledge test
Be recertified every five years

Additional information on federal Hazmat requirements can be found through the TSA Hazmat Endorsement Information.

School Bus and Passenger Endorsements

To drive a school bus in Mississippi, drivers must obtain both the P (Passenger) and S (School Bus) endorsements. This process includes:

A specialized written exam
Skills test in a school bus
A clean driving record
Background check as mandated by state and federal law
Medical certification

More on school bus operation laws can be found via the Mississippi Department of Education’s Transportation Division.

Maintaining and Renewing Endorsements

Endorsements generally remain valid as long as the CDL is current. However, Hazmat endorsements require periodic renewal and retesting every five years. It’s important to ensure all required medical certificates, background checks, and other documentation remain up to date.

For drivers seeking general licensing updates, Mississippi Permit Renewal and Extension Rules may provide helpful renewal timelines and documentation info.

Drivers should also review Top CDL Test Preparation Resources in Mississippi to prepare for endorsement-specific exams. In addition, understanding the Mississippi DMV Fee Schedule Overview will help you anticipate all associated costs.