Exam Domains

1 Danger Zones and Use of Mirrors Weight not published

2 Loading and Unloading Weight not published

3 Emergency Exit and Evacuation Weight not published

4 Railroad-highway Crossings Weight not published

5 Student Management Weight not published

6 Antilock Braking Systems Weight not published

7 Special Safety Considerations Weight 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.

CDL School Bus Endorsement Test (CDL-S) Exam Blueprint

Exam Domains

Exam Details

Official Study Resources