CDL endorsements can open doors to higher-paying jobs, specialized freight, and more job security. But many drivers — especially new ones — aren’t sure what each endorsement means or which ones are worth pursuing.
In this guide, we’ll break down the most important CDL endorsements, how to get them, and which ones are most in demand for 2025.
What Are CDL Endorsements?
A CDL endorsement is an additional certification on your Commercial Driver’s License that allows you to drive certain types of vehicles or haul specific types of cargo.
These endorsements are regulated by the Federal Motor Carrier Safety Administration (FMCSA) and require written knowledge tests — and sometimes skills tests — depending on the type.
The Most Common CDL Endorsements
Here’s a breakdown of the most widely used endorsements and what they allow you to do:
H – Hazardous Materials (HazMat)
Allows you to: Haul hazardous materials like fuel, chemicals, or explosives.
Requirements:
- TSA background check
- HazMat knowledge test
💰 Why it’s valuable: HazMat drivers often earn more due to risk and regulations.
N – Tank Vehicles
Allows you to: Drive tankers carrying liquid or gaseous materials.
Requirements:
- Tanker knowledge test
💡 Often combined with the HazMat endorsement to form X (Tanker + HazMat) — one of the most in-demand combos in trucking.
T – Double/Triple Trailers
Allows you to: Pull double or triple trailer combinations.
Requirements:
- Written knowledge test
🛣️ Common in LTL (less-than-truckload) and linehaul jobs. Great for maximizing pay with high-mile routes.
P – Passenger
Allows you to: Drive passenger vehicles like buses or shuttle vans.
Requirements:
- Written and skills test
- Background check (varies by state)
👥 Typically needed for charter bus, school bus, or airport shuttle jobs.
S – School Bus
Allows you to: Operate a school bus.
Requirements:
- P endorsement
- Additional skills test
- Background and driving record checks
🚸 This endorsement is often paired with P and has strict safety standards.
X – Combination of Tanker and HazMat
Allows you to: Transport hazardous liquids or gases in tank vehicles.
Requirements:
- Both HazMat and Tanker tests
- TSA background check
💼 One of the most lucrative endorsements for OTR and regional drivers.
How to Get a CDL Endorsement
- Apply through your state’s DMV or CDL testing center
- Study the appropriate sections of the CDL manual
- Pass the written exam (and skills test, if required)
- Complete a TSA background check (for HazMat or X endorsements)
- Pay the endorsement fee (varies by state)
📘 Download the FMCSA CDL Manual to start studying.
Which CDL Endorsements Are Most In Demand in 2025?
The following are especially valuable this year:
- X (Tanker + HazMat): High-paying freight and fuel hauling
- T (Doubles/Triples): Needed for LTL and dedicated regional routes
- N (Tanker): Growing demand due to bulk liquid freight increases
- P & S (Passenger & School Bus): Popular for those looking for non-freight driving roles
Do Endorsements Increase Your Pay?
Yes — CDL endorsements make you more versatile and valuable to employers. You can:
- Haul specialized loads
- Qualify for premium routes
- Command higher per-mile or hourly rates
💬 Want to know which endorsement aligns with your goals? Talk to a Driver Advocate and get personalized advice.
Final Thoughts
Adding endorsements to your CDL is one of the smartest ways to increase your earnings, expand your job options, and boost job security in 2025. Whether you’re just getting started or looking to level up your career, endorsements are a strategic investment in your future.
✅ Looking for CDL jobs that match your endorsements? Search Now and find companies hiring for HazMat, Tanker, Passenger, and more.
FAQ: CDL Endorsements
Q: Do endorsements expire?
A: Some, like HazMat, must be renewed regularly and require an updated background check.
Q: Can I get endorsements before I get my full CDL?
A: You can study for and test endorsements after passing your CDL skills exam.
Q: What’s the hardest CDL endorsement to get?
A: HazMat (H or X) is often considered the most involved due to the TSA clearance and strict testing.
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