Railroads operate under one of the oldest and most detailed drug and alcohol testing frameworks in federal transportation law. The Federal Railroad Administration built its program, codified at 49 CFR Part 219, years before most other transportation modes had comparable rules, and it still contains procedures that do not exist anywhere else in the DOT testing world. Post-accident toxicological testing is the clearest example. No other mode requires blood specimens as a matter of course, but FRA does, and it built its own laboratory chain to handle them.
If you manage safety or compliance for a railroad, a rail contractor, or a company that does mechanical or maintenance-of-way work under contract to a railroad, the rules in Part 219 sit on top of the general DOT testing procedures in 49 CFR Part 40. Part 40 governs how specimens are collected, how labs and Medical Review Officers handle results, and how the split specimen and verification process works across every DOT mode. Part 219 is the FRA-specific layer that decides who gets tested, when, and under what circumstances.
Who counts as a regulated employee under Part 219
Part 219 does not apply to every railroad worker. It applies to three categories the regulation calls "regulated employees," and each one has its own definition in 49 CFR 219.5.
- Covered service employees. These are employees performing service in the United States as a train employee, dispatching service employee, or signal employee, as those terms are defined under the hours-of-service statute at 49 U.S.C. 21101. This is the traditional core of FRA-regulated workers: engineers, conductors, dispatchers, and signal maintainers performing safety-sensitive duties.
- Maintenance-of-way (MOW) employees. Roadway workers whose duties involve inspection, construction, maintenance, or repair of track, bridges, signal and communications systems, or roadway maintenance machinery on or near track. FRA brought this group fully under Part 219, including random testing, effective June 12, 2017.
- Mechanical (MECH) employees. Employees who perform mechanical tests or inspections required by FRA regulations on railroad rolling equipment. This category became subject to FRA random drug and alcohol testing starting in 2022, following the final rule published at 87 FR 5719.
That third expansion matters for compliance planning because it is relatively recent. A railroad or contractor that assumes only train crews and dispatchers are covered is working from an outdated picture of the rule. Mechanical employees performing FRA-required inspections and tests on rolling stock are now full participants in the random testing pool, with their own minimum testing rate.
Test types required under Part 219
Part 219 requires the same broad categories of testing as other DOT-regulated modes, plus one that is unique to railroads.
| Test type | When it applies | FRA-specific notes |
|---|---|---|
| Pre-employment | Before an individual begins performing regulated service | Follows standard DOT Part 40 procedures |
| Random | Unannounced selection throughout the year at or above the FRA minimum rate | Separate minimum rates exist for covered service, MOW, and MECH employee pools |
| Reasonable suspicion | A trained supervisor makes specific, contemporaneous, articulable observations of impairment | Governed by Subpart D; observations must meet documented criteria, not a hunch |
| Post-accident toxicological (PAT) | After a qualifying accident, incident, or fatality as defined in Subpart C | Unique to FRA; requires blood and urine specimens, not breath and urine alone |
| Return-to-duty and follow-up | After a violation, before returning to safety-sensitive service and for a period afterward | Follows the DOT Part 40 SAP process used across all modes |
The reasonable suspicion standard is worth being precise about because it is a common source of disputes. Under Subpart D, a railroad's determination that reasonable suspicion exists must rest on specific, contemporaneous, articulable observations of appearance, behavior, speech, or body odor made by a trained responsible railroad supervisor, and the required observations for an alcohol test must generally be made close in time to the employee's performance of covered duties, with strict time limits on how quickly the test must be administered once suspicion is documented. It is not a discretionary call based on rumor or a supervisor's general impression.
Post-accident toxicological testing: the part that sets FRA apart
This is the piece of the regulation that most distinguishes railroads from trucking, aviation, or transit testing programs. Under 49 CFR 219.201, FRA post-accident toxicological testing is mandatory after specific qualifying events, including:
- A major train accident involving a fatality, a hazardous material release accompanied by an evacuation or reportable injury, or railroad property damage above the current reporting threshold (set at $1,500,000 in the current rule text)
- An impact accident causing a reportable injury or property damage above the applicable threshold
- A fatal train incident, where an on-duty employee dies within 12 hours as a result of the operation of on-track equipment
- A passenger train accident involving a reportable injury to any person
- Certain human-factor highway-rail grade crossing accidents involving a regulated employee
When one of these events occurs, the railroad must take all practicable steps to ensure surviving regulated employees subject to the requirement provide both blood and urine specimens, not breath alone. FRA maintains toxicological testing kits pre-positioned at railroad locations specifically so collection can happen quickly after a qualifying event. Specimens, including split specimens, must be retained for at least three months, or two years if the specimen tests positive for alcohol or a controlled substance. An employee who refuses to provide a required specimen following a qualifying event is withdrawn from regulated service and disqualified for nine months.
This regime exists because post-accident toxicology feeds directly into federal accident investigations. It is a safety and investigative tool as much as a compliance test, which is part of why it is handled so differently from routine workplace screening.
Random testing rates change every year
FRA sets minimum annual random testing rates separately for each regulated employee category, based on the last two full calendar years of industry-wide data reported through its Management Information System. The agency publishes its determination in the Federal Register each year. For calendar year 2026, FRA's published rates are:
| Employee category | Minimum random drug rate | Minimum random alcohol rate |
|---|---|---|
| Covered service | 25% | 10% |
| Maintenance-of-way (MOW) | 25% | 10% |
| Mechanical (MECH) | 50% | 10% |
These figures come from FRA's notification of determination for 2026, published at 91 FR 759. The logic behind the numbers is mechanical: if the industry-wide random drug positive rate stays below 1.0 percent for two consecutive years, FRA can hold or lower the rate; if it rises above that threshold, the rate goes up, which is exactly what kept the MECH drug rate at 50 percent rather than allowing it to drop. Because these rates are recalculated annually and can move in either direction, a program built around last year's numbers can fall out of compliance without anyone changing a policy on purpose. These are minimums. Railroads and contractors are free to test at higher rates, and the rules on selection prohibit any pattern that would let a regulated employee predict or avoid being chosen, as detailed in Subpart G.
Small railroad considerations
Not every operator has to run the full program. Under 49 CFR 219.3(c), a railroad qualifies for the small railroad exception if it has 15 or fewer employees covered by the hours-of-service laws and does not have joint operations with another railroad operating in the United States, apart from what is necessary for interchange. Employees performing only MOW or MECH activities do not count toward that 15-employee threshold. A contractor that performs MOW or MECH work exclusively for qualifying small railroads can also claim the exception. Railroads that meet the definition are exempt from Subparts E (reasonable cause testing), G (random testing), and K (referral programs), and are not permitted to perform the FRA-authorized versions of those programs even voluntarily. Pre-employment, reasonable suspicion, and post-accident toxicological testing still apply regardless of size. This exception is narrow and specific, so a growing short line railroad should track its covered-employee headcount rather than assume its size classification is permanent.
Where FRA testing intersects with DOT Part 40
Part 219 tells a railroad who to test and under what circumstances. Part 40 governs how the test itself is conducted, including collection procedures, laboratory certification, chain of custody, split specimen rights, Medical Review Officer verification, and the Substance Abuse Professional process for employees returning to duty after a violation. If your organization also operates commercial vehicles as part of the same fleet, it is worth understanding how the underlying urine collection procedures compare across modes; our guide to DOT urine collection temperature and shy bladder rules covers the Part 40 mechanics that also govern non-toxicological FRA specimen collection. And if you are trying to sort out where FRA-style regulated testing differs from a company's voluntary policy testing, our breakdown of DOT versus non-DOT drug testing lays out the practical differences in documentation, forms, and consequences.
Railroads that also run commercial motor vehicles, maintain a mixed transportation workforce, or need a compliant testing supply chain across DOT modes can review options built for regulated transportation employers in our DOT drug and alcohol testing collection for transportation companies.
Frequently asked questions
Does FRA drug testing apply to office staff at a railroad?
No. Part 219 applies specifically to regulated employees: covered service employees performing train, dispatching, or signal duties, maintenance-of-way employees who work on or near track, and mechanical employees who perform FRA-required inspections or tests on rolling equipment. Administrative and office personnel who do not perform these functions are not regulated employees under this part.
Why does FRA require blood testing when other DOT agencies only use urine or breath?
FRA's post-accident toxicological testing program under Subpart C requires blood and urine specimens after specific qualifying accidents, incidents, and fatalities because the results feed federal accident investigations and need to establish a documented record close to the time of the event. This is distinct from FRA's routine pre-employment, random, and reasonable suspicion testing, which generally follow standard DOT Part 40 urine and breath procedures.
How often do FRA random testing rates change?
FRA reviews and republishes minimum annual random testing rates for covered service, MOW, and MECH employees every year, based on the previous two full calendar years of industry-wide positive and violation rate data. Rates can go up, go down, or stay the same depending on whether industry-wide positive rates cross the thresholds set in the regulation, so a railroad's compliance plan needs to be checked against the current year's published determination rather than assumed from a prior year.
Is a small railroad completely exempt from FRA drug and alcohol testing?
No. A railroad that meets the small railroad definition, generally 15 or fewer hours-of-service covered employees with no qualifying joint operations, is exempt from reasonable cause testing, random testing, and referral program requirements. It still must comply with pre-employment, reasonable suspicion, and post-accident toxicological testing requirements where applicable.
What happens if an employee refuses post-accident toxicological testing?
Under Subpart C, an employee who refuses to provide a required breath, blood, or urine specimen following a qualifying accident or incident must be withdrawn from regulated service and is deemed disqualified from regulated service for nine months.
This article is general information about FRA and DOT drug and alcohol testing regulations, not legal advice. Railroads and contractors should confirm current requirements against the official eCFR text and their own counsel or compliance department before building or revising a testing program, since minimum testing rates and reporting thresholds are updated periodically.
