Official Government Resources
These are the authoritative sources. When in doubt about a regulation, rule, or requirement, these are the sites to trust above all others.
Federal Motor Carrier Safety Administration — the federal authority over all CDL standards, regulations, and requirements nationwide.
fmcsa.dot.gov ↗Find FMCSA-registered ELDT providers, verify your training completion record, and confirm your eligibility before booking your DMV appointment.
tpr.fmcsa.dot.gov ↗Find a certified DOT medical examiner near you. Your DOT physical must be completed by an examiner on this registry.
nationalregistry.fmcsa.dot.gov ↗Required for all HazMat (H) endorsement applicants. Start your TSA fingerprint and background check process here.
tsa.gov/hazmat ↗Official hours-of-service rules — the 11/14 hour rules, 30-minute break, and weekly limits. Bookmark this for the knowledge test and real driving.
fmcsa.dot.gov/hos ↗The federal baseline CDL manual. Your state's handbook builds on this. Good for understanding the underlying federal regulations.
Federal CDL Resources ↗CDL Process Checklist
The complete sequence from zero to CDL in hand. Every step must happen in order — you can't skip steps or do them out of sequence.
Required for first-time Class A, B, H, S, and P applicants. Find an FMCSA-registered provider at tpr.fmcsa.dot.gov. Online theory courses take 1–4 days. Wait 24–72 hours for your record to appear in the federal system before proceeding.
Visit a certified medical examiner from the FMCSA National Registry. Your Medical Examiner's Certificate must be valid before you can apply for a CLP. Most physicals cost $75–$150.
Study your state's official CDL handbook plus all endorsement sections you need. Use the free practice tests on every state page here. Score consistently above 85% before booking your DMV appointment.
Book your DMV appointment (CDL knowledge tests, not regular DL). Bring your license, DOT medical certificate, ELDT completion confirmation, and application fee. Pass the tests and you leave with your Commercial Learner's Permit.
Federal law requires a minimum 14-day CLP hold before you can take the CDL skills test. Use this time for behind-the-wheel practice under a licensed CDL holder's supervision.
Complete ELDT BTW (behind-the-wheel) training with a registered provider if you haven't already. CDL schools, community colleges, and employer training programs all qualify.
Three parts: pre-trip inspection, basic vehicle control (backing maneuvers), and on-road driving test. Book through your state DMV or an approved third-party testing site. Arrive knowing the pre-trip sequence from memory.
After passing the skills test, your state DMV processes your CDL. Some states issue it at the test site; others mail it. Typical processing: 3–10 business days.
Endorsement Quick Reference
Every CDL endorsement, what it covers, how many questions, and what extra requirements are involved.
| Endorsement | What It Covers | Questions | Pass Score | Background Check | Notes |
|---|---|---|---|---|---|
| General Knowledge | Required for ALL CDL classes | 50 questions | 80% (40/50) | No | All applicants |
| Air Brakes (no restriction) | Vehicles with air brakes | 25 questions | 80% (20/25) | No | Class A & B drivers |
| Combination Vehicles | Tractor-trailers, doubles | 20 questions | 80% (16/20) | No | Class A applicants |
| HazMat (H) | Hazardous materials transport | 30 questions | 80% (24/30) | Yes — TSA | Age 21+ required |
| Tanker (N) | Liquid tank vehicles | 20 questions | 80% (16/20) | No | Age 18+ |
| Doubles/Triples (T) | Multiple trailer combinations | 20 questions | 80% (16/20) | No | Age 18+ |
| Passenger (P) | Buses, passenger vehicles | 20 questions | 80% (16/20) | No | Age 18+ |
| School Bus (S) | School bus operations | 20 questions | 80% (16/20) | No | Age 18+ |
| Pre-Trip Inspection | Skills test component | Practical test | Pass/Fail | No | All CDL applicants |
Official CDL Handbooks — All 50 States + DC
Every state publishes its own official CDL handbook. Your knowledge test questions come directly from your state's handbook — not from a generic source. Download yours and read it fully at least once before taking practice tests.
Your DOT physical must be completed by a certified examiner on the FMCSA National Registry. Search by zip code to find one near you — most physicals can be scheduled within days.