🚛

CDL

Commercial Driver's License for all 50 states

CDL General Knowledge

Core knowledge test required for all CDL classes. Covers vehicle inspection, basic control, and safe driving practices.

120Questions

80%Passing Score

90Minutes

5Topic Areas

Hazardous Materials (H) endorsement. Covers placarding, shipping papers, loading/unloading, compatibility, and emergency response.

30Questions

80%Passing Score

60Minutes

Tank Vehicle (N) endorsement. Covers liquid surge, baffled vs. smooth bore tanks, outage, rollover prevention, and safe curve driving.

30Questions

80%Passing Score

45Minutes

This exam content is based on the official handbook: