CDL Classes and Licensing Basics (Class A, Class B, Class C)
What this domain tests
Louisiana CDL applicants must match the vehicle they will drive to the correct CDL class and endorsements. The exam tests class definitions by GVWR/GCWR and seating capacity, the P and S endorsements for school buses, and the CLP-to-CDL sequence through the Louisiana Office of Motor Vehicles (OMV).
Core rules
- Class A: combination vehicle with GCWR of 26,001 lb or more, including a towed unit over 10,000 lb.
- Class B: single vehicle with GVWR of 26,001 lb or more; towed unit 10,000 lb or less.
- Class C: single vehicle under 26,001 lb GVWR designed to carry 16 or more passengers (driver included), or used for hazmat.
- A school bus is not automatically Class C. A 26,001-lb-plus bus is Class B; a smaller bus seating 16 or more is Class C.
- School buses need the P (passenger) and S (school bus) endorsements in addition to the base CDL class.
- Federal rule: hold a CLP at least 14 days before the CDL skills test. Louisiana requires general knowledge, passenger, school bus, and air-brake tests as applicable, plus pre-trip, basic control, and road skills.
Worked example
A district buys a bus with GVWR 28,500 lb and 72 seats. Because the single vehicle is 26,001 lb or more, the driver needs a Class B CDL, not Class C. Add P and S. If the same bus were 24,000 lb GVWR, it would be Class C because it seats 16 or more and is under 26,001 lb.
Traps
Judging class by actual scale weight instead of GVWR; forgetting that passenger capacity drives Class C; assuming an S endorsement alone is enough without P; and skipping the CLP holding period.