Federal Register #2026-15805

PHMSA Final Rule: Reduced Marking Requirements for Limited Quantity Hazardous Materials Shipments

This regulatory update from the Pipeline and Hazardous Materials Safety Administration (PHMSA) revises marking requirements for limited quantity hazardous materials shipments: - Government buyer: - Department of Transportation (DOT), Pipeline and Hazardous Materials Safety Administration (PHMSA) - No OEMs or vendors are involved, as this is a regulatory change, not a procurement - No products or services are being requested; no part numbers or quantities specified - Key regulatory changes: - Authorizes use of a reduced size limited quantity marking on shipping labels for hazardous materials shipped by highway, rail, or vessel - Excludes shipments by aircraft and international vessels from using the reduced size marking - Sets minimum size and visibility standards for the new marking - Overpacks are not permitted to use the reduced size marking - Aims to provide regulatory flexibility and cost savings for shippers and carriers - Rule is part of Docket No. PHMSA-2025-0090 (HM-268B), referencing 49 CFR Parts 172 and 173

Description

This final rule removes undue regulatory burdens by allowing regulated entities to use a reduced sized marking for limited quantity shipments of hazardous materials by highway, rail, or vessel. It revises marking requirements to authorize a reduced size limited quantity marking on package shipping labels for certain shipments, excluding aircraft and international vessels. The rule aims to reduce costs and provide more options for shippers and carriers of hazardous materials. It is effective September 3, 2026, and is part of Docket No. PHMSA-2025-0090 (HM-268B).

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