name	hazmat-quantity-limitations
description	Use when determining hazmat quantity limits per package or shipment. Covers the 49 CFR 172.101 column 9 limits, exemptions, and the 1,001-lb placarding threshold.

Hazmat Quantity Limitations

Quantity limits per package + per vehicle vary by material + PG.

Per-package limits (column 9 HMT)

Materials have max per-package quantity by PG. PG I lowest, III highest. Example: Class 6.1 PG I has very small max-per-package.

Per-shipment / per-vehicle limits

Some materials have aggregate limits. Especially Class 1 explosives.

1,001-lb placarding rule

Aggregate placard-required material ≥ 1,001 lb (in placardable classes) → vehicle must placard. Below = no placard (with exceptions).

Limited Quantity exemptions

Limited quantities of certain materials (LTD QTY mark on package) have relaxed shipping rules.

Where this fits in X3 Compass

Applied in the X3 Compass Hazmat Center add-on.

name	hazmat-quantity-limitations
description	Use when determining hazmat quantity limits per package or shipment. Covers the 49 CFR 172.101 column 9 limits, exemptions, and the 1,001-lb placarding threshold.