Segregation table (49 CFR 177.848)
For each hazard class, this chart shows whether loading, transport, or storage with other classes is permitted, prohibited, or restricted. Based on 49 CFR §177.848.
Run segregation check with your materials Add hazardous materials
Reference chart. Your HazMat list is empty — the matrix below shows the full regulatory segregation table (red / yellow / green). Add at least two materials to mark relevant class combinations on this page and in the segregation check.
 | Must not be loaded, transported, or stored together in the same vehicle or facility. |
 | May be loaded, transported, or stored together. |
 | May be loaded, transported, or stored together only with restrictions. |
Hover placard headers for class names. Class 9 is omitted from this matrix per table design.
Class 1 — explosive compatibility groups
Separate matrix for compatibility groups of explosives (49 CFR).
| Compatibility group for explosives | S | N | L | K | J | H | G | F | E | D | C | B | A |
| A | | | | | | | | | | | | | |
| B | | | | | | | | | | | | | |
| C | | | | | | | | | | | | ||
| D | | | | | | | | | | | |||
| E | | | | | | | | | | ||||
| F | | | | | | | | | |||||
| G | | | | | | | | ||||||
| H | | | | | | | |||||||
| J | | | | | | ||||||||
| K | | | | | |||||||||
| L | | | | ||||||||||
| N | | | |||||||||||
| S | |
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May not be carried on the same transport vehicle. |
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No restrictions. |
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Load, transport, storage is allowed under restrictions. |
Scope & sources (important)Click to show CFR references
This check evaluates segregation per 49 CFR §177.848. Additional loading/unloading and handling requirements may still apply; see 49 CFR §177 Subpart B (Loading and Unloading):
- §177.834 - General requirements
- §177.835 - Class 1 materials
- §177.837 - Class 3 materials
- §177.838 - Class 4 (flammable solid) materials, Class 5 (oxidizing) materials, and Division 4.2 (pyroforic liquid) materials
- §177.839 - Class 8 (corrosive) materials
- §177.840 - Class 2 (gases) materials
- §177.841 - Division 6.1 and Division 2.3 materials
- §177.842 - Class 7 (radioactive) material
- §177.843 - Contamination of vehicles
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Information only. Verify results against the current CFR and your operational rules. See Help and scope.