Mississippi CDL Endorsements
Endorsements are add-ons to your Mississippi CDL that authorize specific vehicle types or cargo. Each requires a separate knowledge test, taken through Mississippi Department of Public Safety, and the endorsement codes are federal, so a Mississippi endorsement is recognized in every state. With automotive manufacturing, poultry and food processing, shipbuilding logistics shaping Mississippi freight, the examples under each endorsement show where that endorsement pays off locally.
Not all endorsements apply to every CDL class. Use the CDL Selector to find what you need.
When It's Required in Mississippi
In Mississippi (MS), required to transport any quantity of hazardous materials that require placarding under federal HazMat regulations.
What to Study for the MS Test
For the Mississippi (MS) 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 Mississippi (MS)
- Shipbuilding logistics: cleaning agents, batteries, and other placarded retail freight
- Timber and paper: roofing, coatings, and compressed-gas deliveries to job sites
When It's Required in Mississippi
In Mississippi (MS), 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 MS Test
For the Mississippi (MS) Tank Vehicles test, study liquid surge and baffled tanks, outage allowances, inspections, high-center-of-gravity handling, and rollover prevention strategies.
Tank Vehicles in Mississippi (MS)
- Shipbuilding logistics: beverage, dairy, and food-grade liquid tankers
When It's Required in Mississippi
In Mississippi (MS), 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 MS Test
For the Mississippi (MS) Passenger test, study passenger safety protocols, controlled loading and unloading, emergency door operation, on-road passenger management, and distracted-driving rules.
Passenger in Mississippi (MS)
- Transit agencies, charter companies, and church or community buses across Mississippi
When It's Required in Mississippi
In Mississippi (MS), 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 MS Test
For the Mississippi (MS) 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 Mississippi (MS)
- Mississippi school districts and their contractors: every route driver needs S plus P
- Activity and athletics trips, which use the same S-endorsed drivers
When It's Required in Mississippi
In Mississippi (MS), 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 MS Test
For the Mississippi (MS) 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 Mississippi (MS)
- Shipbuilding logistics: twin 28-foot LTL trailer sets on the interstates
When It's Required in Mississippi
In Mississippi (MS), 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 MS Test
For the Mississippi (MS) 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 Mississippi (MS)
- Automotive manufacturing: the tractors and straight trucks on every plant route
- Poultry and food processing: livestock and reefer tractors on air brakes
- Timber and paper: dump trucks, mixers, and flatbed tractors on construction routes
- Almost every Class A and Class B vehicle in Mississippi; skip this test and your CDL carries an L restriction
When It's Required in Mississippi
In Mississippi (MS), essential for Class A drivers operating tractor-trailers, lowboys, and other multi-unit combinations over federal weight thresholds.
What to Study for the MS Test
For the Mississippi (MS) Combination Vehicles test, study coupling and uncoupling procedures, air line connections, trailer handling characteristics, off-tracking, and full combination vehicle inspections.
Combination Vehicles in Mississippi (MS)
- Automotive manufacturing: just-in-time parts loads between assembly plants and suppliers
- Poultry and food processing: livestock trailers and refrigerated meat loads
- Shipbuilding logistics: regional and over-the-road tractor-trailer distribution runs
- Timber and paper: flatbed and step-deck loads of steel, lumber, and building materials
Not sure which Mississippi CDL endorsements you need?
Answer a few questions about your vehicle and operation, and the Mississippi CDL Selector Tool pinpoints the endorsements you need in Mississippi.