CDL: Drug Clearinghouse Rates of RTD

More than 159,000 commercial drivers in prohibited status have taken no step toward regaining compliance: no SAP (Substance Abuse Professional) contact, no evaluation, no engagement of any kind. That group represents about 78.7% of all currently prohibited drivers, a share that has worsened since 2020 despite years of Clearinghouse data showing the same trend.​

Back in March 2025, reporting showed that 63.2% of drivers with a positive substance test had never started RTD, effectively choosing to leave trucking rather than requalify. The January 2026 Clearinghouse data confirms that the proportion of drivers “walking away” from the process has increased, not improved.

The RTD process requires a DOT-qualified Substance Abuse Professional evaluation, completion of all recommended treatment or education, a negative return-to-duty test, and at least six unannounced follow-up tests in the first twelve months back on the road. Out-of-pocket costs typically range from about 2,000 to 5,000 dollars, which is a significant barrier for drivers who have left the industry, moved to other jobs, or cannot easily absorb the expense.​

In practical terms, this means 159,226 people who once held commercial credentials, knew how to operate an 80,000‑pound vehicle, and had passed a CDL exam are effectively parked. For most of them, the combination of cost, logistics, and life changes makes a genuine return to commercial driving unlikely.

Before November 18, 2024, a driver in prohibited Clearinghouse status could still physically hold a CDL because state systems were not required to link to the Clearinghouse in real time. A driver could fail a test, skip RTD entirely, and still flash a valid CDL to a carrier that either did not query the Clearinghouse or assumed the license meant the driver was clear.​

Clearinghouse‑II changed that. Since November 18, 2024, state licensing agencies must check the Clearinghouse for every CDL application, renewal, transfer, or upgrade and must downgrade prohibited drivers to standard passenger licenses within 60 days. As of January 2, 2026, prohibited drivers are not just unemployable — they no longer hold valid CDLs and cannot legally operate a CMV in any capacity.

The U.S. has an estimated 3.5 to 4 million active CDL holders. The 202,345 drivers currently in prohibited status therefore represent roughly 5% to 6% of the total CDL population, a proportion that has continued to creep upward since mid‑2025.

These are not retirements or normal attrition; they are drivers removed specifically for drug or alcohol violations who, in the vast majority of cases, have not taken steps to return. Operationally, more than 200,000 CDL holders are absent from the active pool who would otherwise be available if they had either avoided violations or completed RTD, creating a structural reduction in qualified capacity that does not rebound with freight cycles.

The result is a smaller, more constrained pool of qualified CDL holders, shrinking faster than new licenses are being issued unless RTD completions rise sharply or federal testing rules change.

Since the Clearinghouse launched, marijuana has consistently accounted for roughly 59% to 60% of all positive drug-test violations. By mid‑2025, more than 184,000 positive marijuana tests had been recorded, making cannabis the single largest driver of the more than 326,000 total violations on file.

This creates a persistent tension: marijuana is legal for recreational use in 24 states and for medical use in most others, yet federal DOT rules still classify it as a Schedule I substance and test for it under 49 CFR Part 40. A driver can use marijuana legally under state law on personal time and still lose their CDL after a positive federal test; medical cards and state legality provide no protection in DOT’s framework.

The random testing rate remains at 50% of CDL drivers per year and will not drop until the industry posts two consecutive years of positive rates below 1%. Given current marijuana positivity rates and ongoing confusion about state versus federal law, analysts expect the 50% rate to remain in place through at least 2028.

The current administration has signaled it is seriously evaluating a move to reclassify marijuana from Schedule I to Schedule III. If that happens without a specific carve‑out, DOT could lose clear statutory authority to test for marijuana, because its testing program is tied to Schedule I and II substances.

Industry groups, including the American Trucking Associations, have raised concerns with DOT leadership that rescheduling without preserving testing authority could undercut a key safety tool at the same time marijuana remains the leading cause of CDL violations. The stakes for highway safety are significant if the primary source of positive tests falls outside the scope of DOT’s testing rules.

For a one‑ to twenty‑truck carrier or an owner‑operator, these trends translate into immediate, concrete issues in three areas.

Hiring: your pool is smaller than it looks.

Post‑violation: your compliance clock starts immediately.

Annual queries: not a one‑time box to check.

The Clearinghouse is not just paperwork; it is the most complete view of drug and alcohol risk in the driver pool you are hiring from, and it currently shows more than 200,000 drivers who cannot legally operate for you — many of whom are still looking for work.

Two separate federal actions are now constraining the CDL driver pool at roughly the same scale, in roughly the same time frame — but getting very different levels of attention.

The FMCSA non‑domiciled CDL Final Rule, effective March 16, 2026, restricts non‑domiciled CDL eligibility to holders of H‑2A, H‑2B, and E‑2 visas, excluding DACA recipients, TPS holders, asylum seekers, refugees, and drivers who rely solely on an Employment Authorization Document. FMCSA estimates there are about 200,000 non‑domiciled CDL holders and that roughly 194,000 of them — about 97% — will ultimately be unable to renew, shrinking that group to around 6,000 over the coming years as licenses expire.

That creates two parallel groups:

Group One: About 202,000 CDL holders in prohibited Clearinghouse status after drug or alcohol violations, with roughly 159,000 having made no attempt to return. These are overwhelmingly domestic drivers — citizens and legal residents removed under longstanding federal testing rules.

Group Two: About 194,000 non‑domiciled CDL holders who will not be able to renew under the new immigration‑linked eligibility standards, many of whom have clean safety records and did not fail any tests.

Industry conversation has focused heavily on Group Two — California revocations, Dalilah’s Law debates, enforcement actions, and the intersection of Clearinghouse‑II with immigration status. Group One, by contrast, has received relatively little attention despite representing a similar number of drivers lost to the market through compliance failures, substance use, and a testing regime doing exactly what it was designed to do.

For a small carrier, the practical issue is not which group should dominate the policy debate; it is that both groups shrink the same hiring pool at the same time. The applicant in front of you may be prohibited in the Clearinghouse due to a domestic substance violation, or may hold a non‑domiciled CDL that cannot be renewed — and in either case, the solution is the same: verify Clearinghouse status rigorously, check documentation, and never assume that a CDL in a wallet guarantees the holder is legally cleared to drive for you today.

Taken together, these two “200,000‑driver stories” are distinct in cause, population, and politics, but additive in effect. They are simultaneously tightening the supply of eligible CDL holders in ways that will not automatically reverse with the next freight cycle, and the industry has not yet fully connected those dots in its public narrative.

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