Getting a Commercial Driver's License (CDL) opens the door to some of the most in-demand, well-paying jobs in transportation. Whether you're pursuing long-haul trucking, local delivery, or bus driving, the process follows a clear sequence of steps.
Step 1: Meet Basic Eligibility Requirements
Before you apply, make sure you meet these federal minimums:
- At least 18 years old (21+ for interstate commerce)
- Valid regular driver's license
- Able to pass a FMCSA medical exam (DOT physical)
- No disqualifying offenses on your driving record
Step 2: Study the CDL Manual
Every state publishes a free Commercial Driver License Manual covering all knowledge test topics. Download your state's version from your DMV website and study these core sections:
- General Knowledge (required for all CDL classes)
- Air Brakes (if your vehicle has air brakes)
- Combination Vehicles (Class A)
- Any endorsements you need (HazMat, Tanker, Passenger, etc.)
Step 3: Apply for a Commercial Learner's Permit (CLP)
Your first official step is passing the written knowledge tests at your DMV and receiving a CLP. You'll typically need to pass:
- General Knowledge test — 50 questions, 80% to pass (40 correct)
- Air Brakes test — if operating air-brake vehicles
- Any endorsement tests relevant to your planned work
Bring your regular license, proof of residency, Social Security card, and payment for the application fee.
Step 4: Hold Your CLP for 14 Days
Federal regulations require you to hold your CLP for a minimum of 14 days before taking the CDL skills test. Use this time to practice with a qualified CDL holder in the vehicle.
Step 5: Pass the CDL Skills Test
The skills test has three parts:
- Pre-trip inspection — demonstrate that you can identify vehicle defects
- Basic vehicle controls — backing maneuvers, offset backing, alley dock
- On-road driving test — evaluated on turns, lane changes, intersections, and more
You must bring your own vehicle (or use a CDL school's vehicle) to the skills test. Make sure it represents the class and endorsements you're testing for.
Step 6: Get Your CDL
After passing the skills test, pay your state's CDL issuance fee and your license will be issued. If you needed a DOT medical certificate, make sure it's on file with your DMV.
Tips for Success
- Take practice tests before your DMV appointment — our free tests mirror the real exam format
- Study the Air Brakes section thoroughly even if you aren't sure you'll need it — the L restriction prevents you from driving air-brake vehicles if you fail or skip this test
- Consider a CDL training school if you have no prior experience driving large vehicles
- Check your state's specific requirements — some states have additional fees or steps