Sep 23, 2025

What the Proposed Hair Drug Test Legislation Means for FMCSA Regulations and the Industry

The proposed legislation regarding hair drug testing has emerged as a pivotal development in the realm of transportation safety and regulatory compliance under the Federal Motor Carrier Safety Administration (FMCSA). As the trucking industry grapples with ongoing challenges related to substance abuse, this legislative initiative aims to enhance the accuracy and reliability of drug testing protocols for commercial drivers. Unlike traditional urine tests, which may fail to capture long-term usage patterns, hair drug tests provide a comprehensive overview of an individual's substance history, potentially leading to safer roadways and improved accountability within the industry.

This article delves into the implications of the proposed legislation, examining how it aligns with FMCSA regulations and its potential impact on trucking companies, drivers, and safety standards. By scrutinizing the nuances of hair drug testing and its integration into existing regulatory frameworks, stakeholders can better understand the broader consequences for workforce management, compliance costs, and overall industry practices. As the conversation around drug testing evolves, so too does the necessity for informed dialogue among industry leaders, policymakers, and advocacy groups to navigate the future landscape of commercial driving regulations and safety initiatives.

New Bill Calls for Hair Drug Test Results in FMCSA Clearinghouse

New legislation introduced on Thursday would require the Federal Motor Carrier Safety Administration (FMCSA) to accept positive hair drug test results into the agency’s Drug and Alcohol Clearinghouse. Sponsored by U.S. Rep. Rick Crawford, R-Ark., the bill, if passed, would mark a major win for trucking companies that already use hair testing to screen drivers. These companies argue that the inability to upload such results limits their knowledge of habitual drug users when making hiring decisions.

The Trucking Alliance, whose members include J.B. Hunt Transport (NASDAQ: JBHT) and Knight-Swift Transportation (NYSE: KNX), petitioned FMCSA directly in 2022 for an exemption to allow positive results from random and pre-employment hair tests to be reported to the clearinghouse. They stressed that the current system creates loopholes that undermine safety across the industry.

Concerns from Major Carriers

Knight-Swift explained that under current FMCSA regulations, they cannot share positive hair test results with other motor carriers or upload them to the Clearinghouse. This creates a situation where drivers who fail a hair drug test at one company can immediately apply for and obtain employment with another carrier that may have less stringent testing policies.

“This allows any person who fails a hair drug test at one company to immediately apply for and gain truck driving employment at another company,” Knight-Swift told FMCSA. They argued that without change, unsafe drivers can continue working, undermining safety efforts by carriers with stricter drug testing measures.

FMCSA Pushback and Regulatory Limits

Robin Hutcheson, FMCSA’s administrator at the time, countered the Trucking Alliance’s petition by stating that the agency lacked authority to amend the rules. According to Hutcheson, FMCSA must comply with mandatory guidelines issued by the Department of Health and Human Services (HHS). However, those guidelines have been delayed in the review process at the Office of Management and Budget, leaving companies frustrated.

“By ignoring the requirement that FMCSA follow the HHS mandatory guidelines for hair testing … the applicant effectively argues that this provision be read in isolation,” Hutcheson explained in her denial. She maintained that the law requires FMCSA to follow federal standards as a whole, not in part, when considering drug testing methods.

Opposition from Independent Truckers

The Owner-Operator Independent Drivers Association (OOIDA), representing small-business truckers, has voiced strong opposition to federal mandates for hair testing. They argue the tests may be discriminatory and could unfairly penalize drivers.

OOIDA President Todd Spencer explained that hair tests can show traces of drugs like marijuana weeks after use, even if the driver has never operated a vehicle under the influence. This, he argued, labels drivers as “abusers” and restricts their ability to earn a living. OOIDA maintains that just because large carriers use hair testing to address turnover or safety concerns does not mean the entire industry should be subjected to the same standards.

A Legislative Push with History

This is not the first time Rep. Crawford has attempted to advance hair testing legislation. In 2015, he introduced a similar bill cosponsored by then-Rep. Sean Duffy of Wisconsin, who now serves as Transportation Secretary. However, that proposal failed to advance out of committee. The new bill reflects ongoing efforts by large carriers to align federal policy with their safety initiatives, while opposition groups continue to raise concerns about fairness and worker rights.

Conclusion

The debate over hair drug testing in the trucking industry highlights the tension between safety and fairness. Large carriers argue that incorporating hair test results into the FMCSA Clearinghouse would close dangerous loopholes and keep habitual drug users off the road. However, groups like OOIDA warn that hair testing could unfairly punish drivers who are not impaired while working. With Rep. Crawford reviving this legislative push, the outcome may determine whether hair testing becomes a national standard or remains a controversial, company-specific practice.

Stay Compliant in a Changing Testing Landscape

As Congress debates whether to include hair drug testing results in the FMCSA Clearinghouse, staying ahead of compliance requirements has never been more critical. New testing rules could reshape hiring practices and safety standards across the trucking industry, making it essential for carriers and drivers to remain proactive.

At Labworks USA, we specialize in helping truck drivers and motor carriers navigate DOT drug and alcohol testing regulations with ease. Our DOT Consortium’s friendly team is ready to guide you through compliance concerns, random drug and alcohol testing, and FMCSA Clearinghouse registration. Whether policies evolve to include hair testing or not, we’re here to ensure you remain fully compliant and prepared for any changes that impact your operations.

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