CDL, DOT & FMCSA — Federal Pre-Emption of the West Virginia Card

Last verified: May 2026

FMCSA Part 382 — The Federal Frame

49 CFR Part 382 ("Controlled Substances and Alcohol Use and Testing") governs every CDL holder operating a commercial motor vehicle in interstate or intrastate commerce. A "commercial motor vehicle" under 49 CFR § 382.107 includes vehicles with a gross vehicle weight rating of 26,001 pounds or more, vehicles transporting 16+ passengers, and any vehicle requiring placards under hazardous-materials regulations. The regulation requires pre-employment, random, post-accident, reasonable-suspicion, return-to-duty, and follow-up testing for "controlled substances" including marijuana metabolites.

Federal cutoffs under the U.S. Department of Transportation Procedures (49 CFR Part 40) and the underlying U.S. Department of Health and Human Services Mandatory Guidelines for Federal Workplace Drug Testing are 50 ng/mL on the immunoassay screen for marijuana metabolite (THC-COOH) and 15 ng/mL on the GC-MS or LC-MS/MS confirmation. These cutoffs catch off-duty cannabis use for days or weeks after consumption, far longer than impairment persists.

The Drug & Alcohol Clearinghouse

Since January 6, 2020, FMCSA has operated the Drug & Alcohol Clearinghouse (49 CFR Part 382 Subpart G) — an online repository of every CDL drug-and-alcohol-program violation. Employers must query the Clearinghouse before hiring a CDL driver and annually thereafter; positive tests, refusals, and return-to-duty completions are all recorded; violations follow the driver across employers for five years or until completion of the return-to-duty process. A registered West Virginia medical patient whose pre-employment screen at a Charleston trucking company returns positive on April 30, 2026 will carry that Clearinghouse record into every CDL job application through April 30, 2031.

State-Card Status Is No Defense

49 CFR § 382.213(c) is explicit: a controlled-substance-test result must not be reported as negative on the basis that the driver was using the substance under a state-authorized medical-marijuana program. The DOT’s Office of Drug and Alcohol Policy and Compliance has reissued this guidance every time a new state has legalized medical or adult-use cannabis. The April 28, 2026 DEA Schedule III rescheduling final rule (91 Fed. Reg. 22714) does not modify Part 382 or Part 40 testing requirements, because the federal testing framework treats marijuana metabolites independently of the underlying CSA schedule.

Return-to-Duty — The SAP Process

A CDL driver who tests positive must:

• Be removed from safety-sensitive functions immediately under 49 CFR § 382.501
• Complete an evaluation by a DOT-qualified Substance Abuse Professional (SAP)
• Complete the SAP-prescribed treatment or education plan
• Pass a return-to-duty test under DOT direct-observation protocols
• Complete at least six unannounced follow-up tests within the first 12 months and as many as the SAP prescribes for up to 60 months

The driver pays for the SAP evaluation, treatment, and tests out of pocket; FMCSA does not subsidize the process. A registered Mountain State patient who legitimately uses cannabis off-duty for chronic pain or PTSD must abandon medical use to complete the process and stay clean through follow-up testing.

CSX Transportation & Federal Railroad Administration Part 219

CSX Transportation, a CSX Corporation rail carrier headquartered in Jacksonville, Florida, is one of the largest employers in West Virginia by track-mile and crew base, with significant Mountain State operations across the Mountain Subdivision (Grafton, Keyser, Hinton, Huntington), the New River Subdivision, and Northern Panhandle interchange. CSX train and engine service employees sit under the Federal Railroad Administration’s parallel drug-and-alcohol regulation, 49 CFR Part 219, which applies the same federal cutoffs and the same no-state-card-defense posture as FMCSA. Norfolk Southern interchange and BNSF interchange in the Mountain State extend the FRA Part 219 footprint further.

The Adult-Use-State Comparison

Federal pre-emption applies identically in adult-use rec states. CDL drivers in Colorado, Michigan, New Jersey, New York, California, Ohio, Maryland, Virginia, and Pennsylvania face the same Part 382 framework. The DEA’s April 28, 2026 Schedule III rescheduling does not change DOT testing rules in any state. A CDL driver who lives in Hagerstown, Maryland but works out of a Martinsburg-based motor carrier is in the same Part 382 boat as a driver living in Charleston working a Kanawha Valley fleet.

Mountain State Trucking-and-Logistics Workforce

West Virginia’s commercial-driving workforce is concentrated in coal haulage (Southern Coalfields), aggregate/limestone haulage (Greenbrier and Eastern Panhandle), interstate freight (I-77, I-79, I-64, I-81, I-68, I-70 corridors), Procter & Gamble distribution out of the Tabler Station Berkeley County campus, AT&T data-center service fleets in the Eastern Panhandle, and the Procter & Gamble, Walmart, and Lowe’s regional distribution center networks crossing the I-81 corridor. Each of those segments imposes Part 382 testing on its CDL workforce. The April 28, 2026 federal Schedule III rescheduling final rule has no operational effect on any of them. See major employers.

The CDL Reality

• Every West Virginia CDL holder operating a commercial motor vehicle is under FMCSA Part 382 testing.
• Federal cutoffs (50 ng/mL screen, 15 ng/mL confirmation) catch off-duty cannabis use for days or weeks after consumption.
• The Drug & Alcohol Clearinghouse records violations for five years and follows the driver across employers.
• 49 CFR § 382.213(c) bars reporting a positive as negative on the basis of state-program authorization.
• CSX Transportation, Norfolk Southern, and BNSF rail employees sit under parallel FRA Part 219 testing.
• The April 28, 2026 federal Schedule III rescheduling does not modify DOT testing rules.
• The same Part 382 framework excludes cannabis-using CDL drivers in every adult-use rec state.

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