Credential type: licensure examination · verified on the issuer's site September 20, 2026 issuer page
Exam Domains
1 Pulling Double/Triple TrailersWeight not published
2 Coupling and UncouplingWeight not published
3 Inspecting Doubles and TriplesWeight not published
4 Doubles/Triples Air Brake CheckWeight not published
Exam Details
Question TypesMultiple Choice
FormatLinear (computer-based at state DMV)
Online ProctoringNot available
ID RequirementsValid state-issued identification required. Must have a valid non-CDL driver's license to apply for a CDL learner's permit. DOT medical certificate (DOT physical) required for CDL issuance.
RenewalRequired -- CDL valid for 4–8 years depending on state. Renewal requires current DOT medical certificate. HazMat endorsement must be renewed every 5 years (TSA STA also renewed). Contact your state DMV for state-specific renewal requirements.
Retake PolicyTypical 14-day waiting period between failed attempts; exact policy varies by state. Some states impose additional fees for each retake attempt.