An individual seeking to obtain a CDL license must first take and pass all required knowledge tests. Listed below are the required knowledge tests for each CDL Class and endorsement. Click CDL Skill Road Test to view CDL Skill Road Test information
Required Knowledge Tests for Class A
General Commercial
Combination
Airbrakes
Required Knowledge Tests for Class A endorsements
T – Double/Triple Trailers
P – Transport Passengers
S – School Bus
H – Hazardous Material
N – Tankers
Required Knowledge Tests for Class B
General Commercial
Airbrakes
Required Knowledge Tests for Class B endorsements
P – Transport Passengers
S – School Bus
H – Hazardous Material
N – Tankers
Required Knowledge Tests for Class C
General Commercial
Required Knowledge Tests for Class C endorsements
P – Transport Passengers
S – School Bus
H – Hazardous Material
N – Tankers
Endorsements for Hazardous Materials (H) and Tankers (T) do not require a Skills Road Test. Endorsements for H, T and X (Hazardous Material and Tankers) may not be obtained prior to the issuance of the appropriate CDL (Class A, B or C).
