Explosives 1.4 — minor explosion hazard
Placard images are simplified study illustrations, NOT official placards. Always follow 49 CFR Part 172 and use approved placards.
- Hazard
- Explosives that present a minor explosion hazard.
- Identification
- Orange placard with "1.4".
- Driver study notes
- Table 2 — placard when the aggregate gross weight of all Table 2 materials is 1,001 lb or more (exceptions apply).
- Exam relevance
- Unlike 1.1–1.3, Division 1.4 is a Table 2 material.
- Regulation version
- 49 CFR Part 172 Subpart F (verify current eCFR)
Source: PHMSA — 49 CFR Part 172 — Hazardous Materials Table, Communications and Placarding. Updated: 2026-10-09