Define the testing pool
Employees subject to random testing are organized into pools by DOT agency, position type, or organizational policy. Pools can be DOT-specific (FMCSA, FAA, etc.) or non-DOT.
Services
DOT-compliant and non-DOT random drug and alcohol testing with automated selection, scheduling, notification, and audit-ready record keeping. The program runs itself, you just define the rules.
Automated pools, federally compliant selection rates, and audit-ready documentation.
How it works
Random testing is a program, not a one-time event. The system manages pools, selection, notification, and documentation continuously throughout the year.
Employees subject to random testing are organized into pools by DOT agency, position type, or organizational policy. Pools can be DOT-specific (FMCSA, FAA, etc.) or non-DOT.
A scientifically valid method gives each person in the pool an equal chance of selection each period. DOT programs follow federally mandated selection rates.
Selected employees are notified and must report within the required timeframe. For DOT, notification is immediate and the employee proceeds directly to the collection site.
Testing follows the same collection and lab process as any screen. DOT tests use DOT-certified sites and follow federal chain of custody requirements.
Every selection, notification, collection, and result is documented. The system maintains audit-ready records showing compliance with rates and procedures.
DOT rates
Each DOT agency sets minimum annual random testing rates for its regulated industry, the minimum percentage of the pool that must be tested each year.
| Agency | Industry | Drug rate | Alcohol rate | Covered positions |
|---|---|---|---|---|
| FMCSA | Trucking & Motor Carriers | 50% | 10% | CDL holders performing safety-sensitive functions |
| FAA | Aviation | 25% | 10% | Flight crews, mechanics, dispatchers, security screening |
| FTA | Public Transit | 50% | 10% | Bus operators, rail operators, maintenance workers |
| FRA | Railroad | 25% | 10% | Engineers, conductors, signal maintainers, dispatchers |
| PHMSA | Pipeline | 50% | 10% | Pipeline operations and maintenance personnel |
DOT random testing rates are subject to change based on annual industry positive-rate data. PSBI updates selection rates automatically when DOT agencies publish rate changes.
Beyond DOT
Random testing isn't just for DOT-regulated employers. Many organizations run voluntary programs for safety, insurance, or policy reasons.
An ongoing deterrent against substance use for positions where impairment creates safety risks: manufacturing, construction, heavy equipment operation.
Some workers' comp carriers and insurers offer premium discounts or require random testing as a condition of coverage.
Many organizations run random testing as part of a drug-free workplace program even without regulatory mandates. The deterrent effect is the primary benefit.
Some states require or incentivize random testing for specific industries or as part of drug-free workplace certification programs.
Pricing
Program pricing includes the management fee (pool administration, random selection, scheduling, documentation) plus per-test costs for each drug or alcohol screen performed.
Related services
The testing methods, panels, and processes that execute each random selection, plus pre-employment, post-accident, and reasonable-suspicion testing.
Learn more →DOT physicals, fit-for-duty exams, and other occupational health testing that complements drug screening programs.
Learn more →Real people
PSBI is owner-operated and US-based, screening organizations since 1995. Questions about selection rates, pool management, or DOT audits reach a specialist, not a ticket queue.
FCRA-compliantOwner-operated since 1995Based in Ashland, WIGet started
Tell us your pools, agencies, and positions. We'll set up compliant selection rates, notifications, and audit-ready documentation that runs itself.