How often must a Pennsylvania hazmat endorsement be recertified?
Recertification every four years requires passing the hazmat knowledge test and completing the security threat assessment.
Pennsylvania · PAChange state
Free Pennsylvania (PA) CDL Hazardous Materials practice test 2026
H endorsement: placarding, shipping papers and the segregation table.
What’s different in Pennsylvania
Most Hazardous Materials questions are the same federal material in every state. 2 questions in the app are written for Pennsylvania alone, from the Pennsylvania Commercial Driver's Manual (PUB 223, 6-26).
Two Pennsylvania questions, answer shown
How far before CDL expiration does PennDOT mail hazmat recertification notices?
Notices go to every hazmat endorsement holder about seven months before the CDL expires. The notice need not be presented to begin the threat assessment or take the test.
A sample question
One example, answer shown. Practicing the rest happens in the app.
Except for bulk packaging, hazard classes listed in Table 2 require placards only when the total amount transported reaches:
Table 2 materials need placards once the aggregate gross weight, including packaging, reaches 1,001 pounds. Table 1 materials must be placarded in any amount.