Quick Answer

FTA's 49 CFR Part 655 program covers recipients and certain subrecipients and contractors connected to specified Federal transit funding. Coverage depends on both the funded operation and the function performed.

Governing Rules

The controlling industry rule is 49 CFR Part 655, used with 49 CFR Part 40.

Who Is Covered

• Operating a revenue service vehicle, including operation when not in revenue service.
• Operating a non-revenue vehicle when a CDL is required.
• Controlling dispatch or movement of a revenue service vehicle.
• Maintaining a revenue service vehicle or equipment used in revenue service, and carrying a firearm for transit security.
• Employees of covered contractors and subcontractors performing those functions.

Who Is Not Automatically Covered

• Every employee of a transit agency.
• A shared-mobility driver without examining the FTA funding and contractual arrangement.
• Administrative dispatch that does not control the movement of revenue service vehicles.

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

• A covered employee who has not performed a safety-sensitive function for 90 consecutive calendar days and has been out of the random pool must receive a pre-employment drug test before resuming that function under § 655.41(d).
• Bus, rail transit, and paratransit operations can be covered; vehicle type alone does not decide coverage.
• FTA shared-mobility guidance distinguishes contracted service from patron-selected taxi arrangements and other funding situations.
• Recipients remain responsible for ensuring covered contractors maintain compliant testing programs.

Common Misconceptions

• Dispatchers are not categorically excluded; movement-control duties can be safety-sensitive.
• Mechanics can be covered even though they do not drive in revenue service.
• All rideshare or taxi work is not automatically subject to FTA testing.

Related Articles

• Pre-Employment Testing
• Follow-Up Testing
• 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.

What is FTA's 90-day pre-employment rule?

If a covered employee has not performed a safety-sensitive function for 90 consecutive calendar days and has been removed from the random pool, the employer must administer a pre-employment drug test before the employee resumes the function.

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