Quick Answer

FRA regulates railroad drug and alcohol programs principally through 49 CFR Part 219, with Part 40 procedures applying to DOT tests unless FRA provides otherwise. Railroad coverage uses service-based categories and includes railroad-specific post-accident and reasonable-cause rules.

Governing Rules

The controlling industry rule is 49 CFR Part 219, used with 49 CFR Part 40.

Who Is Covered

• Hours-of-service employees, including covered train and engine, dispatching, and signal service.
• Maintenance-of-way employees and other regulated service categories identified in Part 219.
• Employees and contractors when the rule includes the service they perform.

Who Is Not Automatically Covered

• Every person employed by or present on railroad property.
• Work outside a Part 219 regulated service category.
• Company-policy testing that is clearly conducted as non-Federal testing.

What Triggers the SAP Return-to-Duty Process

A verified positive DOT drug test, a DOT alcohol violation, or a refusal defined by Part 40 or the industry rule requires immediate removal from covered safety-sensitive functions and completion of Part 40 Subpart O before return.

Return-to-Duty Process

The employee completes a SAP evaluation and the recommended education or treatment, then returns to the same SAP for a follow-up evaluation. After the SAP reports successful compliance, an employer must order the directly observed return-to-duty test. Only the employer can return the person to covered duty, and the employer must carry out the SAP's unannounced follow-up plan.

Employer Responsibilities

• Correctly identify covered employees and tests.
• Remove a violator from safety-sensitive functions and provide the required SAP information.
• Order the return-to-duty test only after receiving successful-compliance documentation.
• Implement the SAP's follow-up plan without disclosing the schedule.
• Meet industry-specific reporting, recordkeeping, contractor, and oversight duties.

Employee Responsibilities

• Confirm whether the test was DOT or non-DOT and which authority applied.
• Stop performing covered safety-sensitive functions after a DOT violation.
• Complete the SAP's education or treatment recommendation and follow-up evaluation.
• Work with a current or prospective employer for the return-to-duty test; a SAP does not order the test.
• Comply with unannounced follow-up testing after returning to covered duty.

Agency- or Program-Specific Nuances

• Part 219 uses railroad-specific terms such as regulated employee, regulated service, reasonable cause, and reasonable suspicion.
• FRA post-accident toxicological testing under Subpart C is distinct from ordinary Part 40 workplace testing and has specialized triggers and procedures.
• Railroads must make prompt removal and referral decisions after covered violations and preserve the distinction between Federal and company-authority testing.
• Return-to-duty and follow-up testing under Part 40 apply when a regulated employee seeks to resume covered service after a DOT violation.

Common Misconceptions

• All railroad post-accident testing is not the same as a standard Part 40 test.
• A railroad job title alone does not establish Part 219 coverage.
• A company-policy waiver does not cancel Federal return-to-duty requirements.

Related Articles

• Direct Observation
• Refusal to Test
• Transportation Modalities Hub

Frequently Asked Questions

Does Part 40 itself decide which jobs are covered?

No. The operating administration's industry rule identifies covered employers and safety-sensitive functions. Part 40 supplies the testing procedures and SAP return-to-duty framework.

Can an employee return to safety-sensitive duty immediately after the SAP follow-up evaluation?

No. An employer must receive the SAP's successful-compliance report and obtain the required negative return-to-duty test result before safety-sensitive duty resumes.

Who decides whether to return an employee to work?

The employer makes the employment and safety-sensitive assignment decision. A SAP evaluates compliance and recommends follow-up testing but does not order an employer to hire or reinstate someone.

Need Help With the DOT Return-to-Duty Process?

A DOT-qualified Substance Abuse Professional can help you understand the requirements that apply to your transportation role and guide you through the federally required SAP process.

Schedule an Initial SAP Assessment