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PHMSA Hazardous Materials Regulations (49 CFR 171)

Governs the classification, packaging, labeling, and transportation of hazardous materials by highway, rail, vessel, and air in the United States. Applies to shippers, carriers, and packaging manufacturers handling hazardous materials.

View official source document

Rules extracted

987

Obligations decomposed

41.1x

Avg obligations per rule

🇺🇸 United States

Jurisdiction

What AuditDSS covers

Source

Regulation

Extracted

Rules

Decomposed

987

Obligations

41.1x

Decomposition ratio

Each rule is decomposed into an average of 41.1 atomic obligations — the smallest testable units that can be independently violated.

Fully extracted & scored

All 987 obligations have been decomposed, titled, risk-scored, and embedded for semantic matching.

Risk scoring

Every obligation in PHMSA HMR Part 171 is scored across independent risk dimensions:

Obligation Weight

How critical within the regulatory framework

Violation Likelihood

How often breached in practice

Enforcement Evidence

Regulator enforcement history and penalties

Cascade Dependency

How many obligations depend on this one

Regulatory details

Full title: PHMSA Hazardous Materials Regulations (49 CFR 171)
Regulatory body: Pipeline and Hazardous Materials Safety Administration
Jurisdiction: 🇺🇸 United States
Document type: regulation
Effective date: January 3, 1976
Industry: Workplace Safety & WHS/OHS
Official source: View source document ↗

Who this applies to

shippers of hazardous materialscarriersfreight forwarderspackaging manufacturers

Key requirements

hazmat classification
packaging requirements
shipping papers and markings
placarding
employee training
incident reporting
security plans

Frequently asked questions about PHMSA HMR Part 171

What is PHMSA HMR Part 171?

Who does PHMSA HMR Part 171 apply to?

PHMSA HMR Part 171 applies to shippers of hazardous materials, carriers, freight forwarders, packaging manufacturers.

How many obligations does PHMSA HMR Part 171 contain?

AuditDSS has decomposed PHMSA HMR Part 171 into 987 atomic obligations from 24 rules. Each obligation is independently testable and risk-scored.

What are the key requirements of PHMSA HMR Part 171?

The key requirements include: hazmat classification, packaging requirements, shipping papers and markings, placarding, employee training, incident reporting, security plans.

How can I assess my PHMSA HMR Part 171 compliance?

Upload your compliance policy to AuditDSS. The platform maps your document against all 987 PHMSA HMR Part 171 obligations using deterministic AI scoring — not checklists or LLM summaries. You get a risk-scored gap analysis showing exactly which obligations are covered, partially covered, or missing.

Which jurisdiction enforces PHMSA HMR Part 171?

PHMSA HMR Part 171 is enforced in United States by Pipeline and Hazardous Materials Safety Administration.

When did PHMSA HMR Part 171 come into effect?

PHMSA HMR Part 171 became effective on January 3, 1976.

What industry does PHMSA HMR Part 171 apply to?

PHMSA HMR Part 171 is primarily relevant to the Workplace Safety & WHS/OHS industry. AuditDSS covers 45 regulations in this industry sector.

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Don't have a compliance policy yet? AuditDSS generates a complete compliance pack for PHMSA HMR Part 171 — alone or combined with other regulations your business needs. Every clause is mapped to specific obligations.

Policy

High-level commitments and governance framework covering PHMSA HMR Part 171 requirements.

Procedures

Step-by-step operational procedures to implement each policy commitment.

Forms & checklists

Ready-to-use forms, registers, and checklists for day-to-day compliance operations.

Multi-regulation

Combine PHMSA HMR Part 171 with other regulations into a single unified compliance pack for your business.

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AI maps against 987 obligations

Your document is scored against every obligation in PHMSA HMR Part 171. Each claim is mapped to the obligation tree and evaluated for coverage.

Risk-scored gap report

Receive every gap ranked by risk priority with remediation guidance, enforcement evidence, and cascade impact analysis.