What hazmat employee training does US DOT require (49 CFR 172.704)?
Under 49 CFR 172.704 of the US Hazardous Materials Regulations, every hazmat employer must train and test each hazmat employee in general awareness, function-specific duties, safety, and security awareness, plus in-depth security training where a security plan applies. New or reassigned employees must be trained within 90 days, working under direct supervision until then, and everyone must be retrained at least every three years. Employers must keep training records. The minimum civil penalty for a training violation is $617.
By the Knowledge Foundry editorial team. How we write and check these pages
- Published
- Updated
- Reading time
- 9 min
- Jurisdiction
- United States (federal)
- Regulator
- Pipeline and Hazardous Materials Safety Administration (PHMSA), US Department of Transportation; enforced with FMCSA, FAA, FRA and the US Coast Guard
Key takeaways
- The requirement applies to any hazmat employer: anyone who ships, transports or makes packagings for hazardous materials in US commerce, including self-employed operators and government bodies.
- Training has up to five parts: general awareness/familiarization, function-specific, safety, security awareness, and in-depth security training for employees covered by a security plan.
- Training must be completed within 90 days of hire or a job change (with direct supervision until then) and repeated at least once every three years.
- Employers must test employees and keep a record covering the preceding three years, for the whole period of employment and 90 days after.
- Since February 13, 2026, employees who only manufacture, repair, modify, recondition or test packagings are excepted from safety and security awareness training.
Who must provide hazmat employee training?
Every hazmat employer must train each of its hazmat employees. Section 172.702 states that a hazmat employer "shall ensure that each of its hazmat employees is trained" and tested, and that no hazmat employee may perform a regulated function until instructed in the requirements for that function, subject to the 90-day supervised exception described below.
For readers outside the United States: the Hazardous Materials Regulations (HMR) are federal rules in Title 49 of the Code of Federal Regulations (CFR), Parts 171 to 180. They are written by the Pipeline and Hazardous Materials Safety Administration (PHMSA), part of the US Department of Transportation (DOT), and apply across road, rail, air and water. Parts 174 to 177 add mode-specific training for rail, air, vessel and highway.
The definitions in 49 CFR 171.8 are broad. A hazmat employer is anyone who uses at least one hazmat employee and transports hazardous materials, causes them to be transported, or designs, makes, inspects, marks, repairs or tests packagings sold as qualified for hazmat. A hazmat employee includes anyone who loads, unloads or handles hazardous materials, prepares them for transport, operates a vehicle carrying them, or is responsible for their transport safety. Office staff who classify goods or complete shipping papers are therefore in scope, not only drivers and warehouse staff. This page states the position as at September 2026.
What must hazmat training cover?
Section 172.704(a) requires up to five components of training for each hazmat employee. Which components apply depends on the employee's functions and on whether the employer must keep a security plan.
| Component | Paragraph | What it must cover | Who needs it |
|---|---|---|---|
| General awareness/familiarization | (a)(1) | Familiarity with the HMR and the ability to recognize and identify hazardous materials consistent with hazard communication rules. | Every hazmat employee |
| Function-specific | (a)(2) | The HMR requirements, special permits or exemptions that apply to the functions the employee performs; ICAO Technical Instructions or IMDG Code training may substitute where permitted. | Every hazmat employee (except some rail maintenance-of-way staff and signalmen) |
| Safety | (a)(3) | Emergency response information, measures to protect the employee from hazards in the workplace, and methods for avoiding accidents such as safe package handling. | Every hazmat employee except packaging-only staff |
| Security awareness | (a)(4) | Security risks in hazmat transportation, methods to improve security, and how to recognize and respond to possible security threats. | Every hazmat employee except packaging-only staff and some rail staff; new employees within 90 days |
| In-depth security | (a)(5) | The employer's security plan: security objectives, organizational security structure, specific procedures, each employee's duties, and actions to take after a security breach. | Employees who handle, perform functions for, or implement a security plan under Subpart I |
Training "means a systematic program that ensures a hazmat employee has familiarity with the general provisions of this subchapter, is able to recognize and identify hazardous materials, has knowledge of specific requirements of this subchapter applicable to functions performed by the employee, and has knowledge of emergency response information, self-protection measures and accident prevention methods and procedures".
Training delivered for other regimes can count. Section 172.704(b) allows hazard communication training given for OSHA (29 CFR 1910.120 or 1910.1200), EPA (40 CFR 311.1) or other federal or international security programs to satisfy these components to the extent it covers them. See OSHA training requirements for the workplace safety side.
When must hazmat training be completed and repeated?
Training must be completed within 90 days of employment or a change in job function, and repeated at least once every three years. Until the initial training is done, the employee may perform hazmat functions only under the direct supervision of a properly trained and knowledgeable hazmat employee.
- Initial training: within 90 days after employment or a change in job function, under direct supervision in the meantime (172.704(c)(1)).
- Security awareness for new employees: within 90 days after employment (172.704(a)(4)).
- Recurrent training: at least once every three years (172.704(c)(2)).
- In-depth security training: at least every three years, or within 90 days of implementing a revised security plan if the plan changes during the cycle (172.704(c)(2)).
- Prior training: training from a previous employer or other source may count if the employer obtains a current record of it from the previous employer (172.704(c)(3)).
Three years is a maximum, not a target. Section 172.704(c)(4) makes the employer responsible for compliance with the HMR whether or not training has been completed, and the HMR are amended several times a year. Employees need updated function-specific training when a rule change affects their tasks. See how to set mandatory training refresh cycles and how to update training when regulations change.
What testing and training records are required?
Employers must test each hazmat employee "by appropriate means" on the training subjects (172.702(d)) and keep a record of current training covering the preceding three years. The record must be kept for as long as the person is employed as a hazmat employee and for 90 days afterward, and made available on request to authorized DOT officials.
- The hazmat employee's name.
- The most recent training completion date.
- A description, copy or the location of the training materials used.
- The name and address of the person providing the training.
- Certification that the hazmat employee has been trained and tested.
The regulation does not prescribe a test format, pass mark or course length. The combination of "tested by appropriate means" and a record of the materials used means an employer should be able to show what each employee was taught, which version of the content was used, and how their understanding was checked. See how to prepare training records for an audit.
What exceptions apply, and what changed in 2026?
Two groups have reduced training. Employees whose only hazmat function is making or maintaining packagings are excepted from safety and security awareness training, and railroad maintenance-of-way employees and signalmen who perform no other HMR function are excepted from function-specific, security awareness and in-depth security training.
The packaging exception was widened by the PHMSA final rule Eliminating Unnecessary Regulatory Burdens on Fuel Transportation, published January 14, 2026 and effective February 13, 2026. It added packaging manufacturers to the existing exception for staff who repair, modify, recondition or test packagings, and extended the exception to security awareness training. PHMSA's stated reason is that the training's focus is on offering and transporting hazardous materials.
States have limited room to add requirements. Under 172.701, a state may impose stricter training only on motor vehicle drivers domiciled in that state, and only if it does not conflict with the federal rules.
What are the penalties for training violations?
Training violations carry a minimum civil penalty of $617 per violation and a maximum of $102,348, rising to $238,809 where the violation causes death, serious illness, severe injury or substantial property destruction. These inflation-adjusted amounts are set in 49 CFR 107.329, which states that there is no minimum civil penalty for HMR violations generally, "except for a minimum civil penalty of $617 for violations relating to training".
A continuing violation counts as a separate offense for each day it continues. Because each untrained employee can be a separate violation, a training gap across a workforce can produce a penalty well above the minimum.
How can employers map 172.704 to learning outcomes and evidence?
Map each training component to a function-level learning outcome and to the record an inspector will ask for. The table below is illustrative; real outcomes depend on the materials, modes and functions involved.
| Component | Example learning outcome | Assessment evidence |
|---|---|---|
| General awareness | Identifies the hazard class of a package from its markings and labels. | Image-based recognition test, with the pass result and content version on the training record. |
| Function-specific (shipper) | Completes a shipping paper for a given material with the correct description and emergency response information. | Practical exercise marked against a checklist, plus the employer's certification of training and testing. |
| Safety | Describes the spill and exposure response steps for the materials handled at the site. | Scenario questions tied to the site's emergency response information. |
| Security awareness | Recognizes a suspicious shipment request or unauthorized access and reports it. | Scenario test completed within 90 days of hire, dated on the record. |
| In-depth security | Explains the employee's own duties under the security plan and what to do after a breach. | Plan-specific assessment, repeated within 90 days of any plan revision. |
A training matrix listing each hazmat function against the components it needs is the usual way to show that function-specific training matches what people actually do. For designing the checks themselves, see how to design competency assessments.
How does Knowledge Foundry approach this?
Knowledge Foundry models each 172.704 component and the HMR sections behind each hazmat function as nodes in a knowledge framework, linked to learning outcomes and assessment points. When PHMSA amends a section, the functions and training content that rely on it can be identified directly. See the approach for energy and resources organizations.
Frequently asked questions
Is there a required number of hours for hazmat training?
No. Subpart H of Part 172 sets the content, timing, testing and records, but not course length, delivery method or pass mark. Training may be provided by the employer or by public or private sources (172.702(c)). The employer must still be able to show the training covered each required component for the employee's functions.
Does air or sea transport need different training?
The 172.704 requirements apply to all modes, and Parts 174 to 177 add mode-specific requirements for rail, air, vessel and highway. For international shipments, training on the ICAO Technical Instructions or the IMDG Code may be used as function-specific training to the extent it covers functions authorized under Subpart C of Part 171.
Can a new employee handle hazardous materials before being trained?
Yes, but only for up to 90 days after hire or a change of job function, and only under the direct supervision of a properly trained and knowledgeable hazmat employee. After 90 days, the employee may not perform the function until the training and testing are complete.
Does training from a previous employer count?
It can. Section 172.704(c)(3) allows relevant training from a previous employer or other source to satisfy the requirements, provided the new employer obtains a current record of that training from the previous employer. The new employer remains responsible for any function-specific training its own operations need.
Sources
- 49 CFR 172.704: Training requirements, Electronic Code of Federal Regulations (eCFR)
- 49 CFR Part 172, Subpart H: Training (sections 172.700 to 172.704), Electronic Code of Federal Regulations (eCFR)
- 49 CFR 171.8: Definitions and abbreviations, Electronic Code of Federal Regulations (eCFR)
- 49 CFR 107.329: Maximum penalties, Electronic Code of Federal Regulations (eCFR)
- Hazardous Materials: Eliminating Unnecessary Regulatory Burdens on Fuel Transportation, final rule (91 FR 1433), PHMSA, Federal Register
This page is general information, not legal or compliance advice. Check the primary sources above and obtain advice for your circumstances. See our editorial standards.