For Drivers & Owner-Operators
CDL License Guide
Everything you need to know about Commercial Driver's License classes, endorsements, and requirements before you hit the road — or apply to join our network.
What Is a CDL?
A Commercial Driver's License (CDL) is a U.S. driver's license required to operate large, heavy, or placarded hazardous material vehicles. It is issued by your state's DMV or licensing authority and is federally regulated by the FMCSA (Federal Motor Carrier Safety Administration).
To earn a CDL, you must pass a general knowledge test, obtain a Commercial Learner's Permit (CLP), complete entry-level driver training (ELDT) if required, and pass a skills/road test in the class of vehicle you intend to drive.
The Three Tiers
CDL License Classes
CDLs are divided into three classes based on vehicle weight, configuration, and cargo type. Choosing the right class determines what you can legally haul — and what jobs you qualify for.
Class A
CDLCombination Vehicles — The heavy-hauling standard.
Required for any combination of vehicles with a Gross Combination Weight Rating (GCWR) of 26,001 pounds or more, provided the towed unit is 10,000 pounds or more. This is the license most owner-operators need for tractor-trailers, heavy dump trucks with trailers, and large equipment movers.
Common Vehicles
- Tractor-trailers (semi-trucks)
- Dump trucks towing trailers over 10,000 lbs
- Livestock carriers & flatbeds with heavy loads
- Tanker trucks with large-capacity trailers
Class B
CDLSingle Heavy Vehicles — Straight trucks & large buses.
Covers single vehicles with a Gross Vehicle Weight Rating (GVWR) of 26,001 pounds or more, or any such vehicle towing a unit under 10,000 pounds. Most straight dump trucks, cement mixers, and large box trucks fall into this class.
Common Vehicles
- Straight dump trucks (single, tandem, tri-axle)
- Large box trucks & delivery vehicles
- Cement mixers & construction equipment haulers
- Large passenger buses (city, school, tour)
Class C
CDLSpecialized Transport — Hazmat & passenger vehicles.
For vehicles transporting 16 or more passengers (including the driver) or hazardous materials requiring placards. Also covers any vehicle not classified under Class A or B that carries these specific loads. Many CDL-C drivers add endorsements for specialized local hauling.
Common Vehicles
- Small HazMat vehicles (fuel, chemicals, waste)
- Passenger vans & small buses (16+ seats)
- Combination vehicles under Class A/B thresholds
- Airport shuttles & hotel transport
Going Further
CDL Endorsements
Endorsements are add-on certifications that let you haul specific cargo or operate specialized vehicles. Each requires an additional knowledge test — and sometimes a skills test or federal background check.
Hazardous Materials (HazMat)
Required for transporting hazardous materials that require placarding. Requires a TSA background check and passing a written knowledge test.
Tank Vehicle
Required when hauling liquid or gaseous materials in a tank or tank trailer with a rated capacity of 1,000 gallons or more.
Passenger
Required for vehicles designed to carry 16 or more passengers (including the driver). Requires both a written test and a road skills test in a passenger vehicle.
School Bus
Required for drivers of school buses. Requires both the Passenger (P) endorsement and additional background checks specific to transporting students.
Doubles / Triples
Allows a driver to tow two or three trailers at once. Common in long-haul and freight operations. Requires a written knowledge test.
Tank + HazMat Combo
A combined endorsement for drivers who haul hazardous materials in tank vehicles. Covers both the N (Tank) and H (HazMat) requirements in one endorsement.
Know Your Limits
Common CDL Restrictions
Restrictions are added to your CDL when you take your skills test in a vehicle that lacks certain equipment. They limit what you can legally operate — so test in the right vehicle from the start.
Stay Current
Medical & DOT Requirements
A valid CDL is only part of staying road-legal. Interstate commercial drivers must maintain a current DOT medical card and self-certify their type of driving with their state.
DOT Physical Exam
Required every 24 months (or sooner if you have a condition). Must be performed by a certified FMCSA medical examiner.
Self-Certification
You must tell your state whether you drive interstate or intrastate, and whether you fall under exempt or non-excepted status.
Drug & Alcohol Testing
Pre-employment, random, post-accident, and reasonable-suspicion testing are mandatory under FMCSA regulations.
ELD & Hours of Service
Most drivers must use an Electronic Logging Device (ELD) to track hours and comply with HOS limits.
Ready to Put Your CDL to Work?
If you hold a valid CDL and you're looking for consistent, project-based hauling opportunities across the Florida Gulf Coast, we'd love to meet you.