hazmat-vessel-vs-highway-vs-air-rules

name	hazmat-vessel-vs-highway-vs-air-rules
description	Use when shipping hazmat by multiple modes. Covers the mode-specific regulations (rail 49 CFR 174, air 49 CFR 175 + IATA, vessel 49 CFR 176 + IMDG), and the harmonization with international.

Hazmat Vessel Vs Highway Vs Air Rules

Each transport mode has unique hazmat regulations. International codes (IATA/IMDG/RID) harmonize with US rules.

Highway (49 CFR 177)

Most detailed. Defaults assumed unless other-mode specified.

Rail (49 CFR 174)

Additional packaging requirements, different placarding, distinct rolling stock specs.

Air (49 CFR 175 + IATA DGR)

Most restrictive. Many DOT-allowed materials are FORBIDDEN for air. Lithium battery limits tighter.

Vessel (49 CFR 176 + IMDG)

International maritime — IMDG Code. Stowage requirements at column 10 HMT.

Intermodal

Most restrictive mode applies. Marking + packaging must comply with all relevant modes.

Where this fits in X3 Compass

Applied in the X3 Compass Hazmat Center add-on.