H endorsement: placarding, shipping papers and the segregation table.
Most Hazardous Materials questions are the same federal material in every state. One question in the app is written for Illinois alone, from the Illinois Commercial Driver's License Study Guide (DSD CDL 10.30, July 2025).
Illinois accepts a current TSA assessment only if its expiration date matches or exceeds the expiration of the new Illinois CDL; otherwise a new assessment must be approved before H or X is issued.
One example, answer shown. Practicing the rest happens in the app.
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.