Heavy Duty Trucking Logo
MenuMENU
SearchSEARCH

FMCSA Doubles Random Drug-Testing Percentage for 2020

The Federal Motor Carrier Safety Administration is doubling the minimum annual percentage rate for random controlled substance testing for commercial motor vehicle drivers, from 25% to 50% percent, effective Jan. 1.

Deborah Lockridge
Deborah LockridgeEditor and Associate Publisher
Read Deborah's Posts
December 27, 2019
FMCSA Doubles Random Drug-Testing Percentage for 2020

FMCSA estimates it will cost the trucking industry  $50 million to $70 million to conduct the additional random drug tests.

Photo: Quest Diagnostics

3 min to read


The Federal Motor Carrier Safety Administration is doubling the minimum annual percentage rate for random controlled substance testing for commercial motor vehicle drivers, from 25% to 50% percent, effective Jan. 1, in response to rising positive drug-testing rates.

in a Dec. 27 Federal Register Notice, the agency explained that the 2018 FMCSA Drug and Alcohol Testing Survey showed the positive rate for controlled substances random testing increased to 1%. DOT regulations require FMCSA to increase the random-testing rate when the data for any calendar year shows a reported positive of 1% or more.

Ad Loading...

For 2016 and 2017, the positive rate was estimated to be 0.7% and 0.8%, respectively.

Trucking Under the Influence: HDT's in-depth series on truck driver drug and alcohol use.

The minimum drug-testing rate was 50% from the start of the DOT testing program in 1995 until 2015. FMCSA reduced it to 25% starting Jan. 1, 2016, based on two consecutive years of testing data (2013-2014) that showed a positive rate of less than 1%.

The minimum annual percentage rate for random alcohol testing will remain at 10%.

Ad Loading...

Industry Impact of Drug-Testing Change

FMCSA estimates there are 3.2 million CDL holders operating in interstate commerce and 1 million CDL holders operating in intrastate commerce. That means that the minimum number of random drug tests performed will increase from 1.05 million at the previous 25% rate to approximately 2.1 million in calendar year 2020. The agency estimates it will cost the trucking industry an estimated $50 million to $70 million to conduct the additional tests.

Calling the move “a financial hit to the industry that no one was expecting,” Dave Osiecki, president and CEO of Scopelitis Transportation Consulting, told HDT that although this drug testing data was collected in the first quarter of 2019, “until now, there has been no indication from FMCSA about the increase in positive tests that has led to random testing rate change.”

He noted that this random testing rate increase is likely to have a small productivity impact as well, because the process of taking the driver off the road and directing him/her to a testing site takes up time that would otherwise be productive working time.

More importantly, Osiecki added, “it’s disappointing to learn that more drivers are testing positive for drugs,” Osiecki added. “This is a clear safety concern. Perhaps this is a result of greater marijuana use due to changing state laws?” 

Is Drug Use Higher in Trucking Than Data Indicates?

In fact, some in the trucking industry are concerned that the actual number of drivers using prohibited substances is higher than the official drug-testing program indicates. Last summer, the Alliance for Driver Safety & Security, commonly known as the Trucking Alliance, released the results of a study comparing hair-testing results to the FMCSA’s mandated urine-testing results, which is said showed “compelling evidence that thousands of habitual drug users are skirting a system designed to prohibit drug use in transportation.” That study, the Alliance said, found that urinalysis missed 9 out of 10 illicit drug users in pre-employment testing.

Ad Loading...

When asked for the association’s response to this latest news, Lane Kidd, managing director of the Alliance, called it “clear evidence that a higher percentage of employed truck drivers are masking their drug use on the front end when applying for a job.

"Public policy makers can do much more to keep drug users out of commercial trucks," Kidd told HDT. "For instance, we know that hair testing is more effective at identifying illicit drug use, before they get a truck driving job.”

Another problem, Kidd said, is that no clear statistics are available to know how many drug-impaired truck drivers are involved in serious accidents, "because post-accident drug testing protocols are not effectively enforced."

More Safety & Compliance

CVSA inspector photo in background with CVSA logo superimposed on top
Maintenanceby News/Media ReleaseJuly 31, 2026

Brake Safety Week to Focus on Drums and Rotors

Commercial vehicle inspectors will be focusing on brakes during CVSA's Brake Safety Week, August 23-29.

Read More →
American flag in background with photos of military truck and Freedom Haulers ad graphic
Driversby Deborah LockridgeJuly 30, 2026

Trump Administration Looks to Put More Veterans Behind the Wheel

The Freedom Haulers program pulls together existing and expanded programs at several federal agencies to recruit veterans to drive commercial heavy-duty trucks and cut the red tape for them to get a CDL, training, and employment.

Read More →
Graphic illustrating court verdicts with money and a cracked windshield with a gavel in the background

$604 Million Verdict Tests Broker Liability After Supreme Court Ruling

C.H. Robinson plans to appeal after a Texas jury found it bore the largest share of responsibility for a fatal 2021 crash, in a case that follows the Supreme Court's Montgomery decision allowing negligent hiring claims against freight brokers.

Read More →
Ad Loading...
Line of gray semi trucks with Fraley & Schilling logo
Safety & ComplianceJuly 15, 2026

How Fraley & Schilling Improved Logbook Compliance by Over 50%

Fraley & Schilling needed a way to close a compliance workflow gap in its ELD system without adding more work from driver training, reminders, and back-office follow-ups. It found the answer in a custom driver app.

Read More →
Man standing beside tractor-trailer in sepia tone with the words "Farewell CDL" superimposed on top
Driversby Jack RobertsJuly 1, 2026

Farewell, CDL: Why I'm Giving Up My Commercial Driver's License

After more than 20 years as a CDL holder, HDT Executive Editor Jack Roberts is letting his commercial license expire. Not because he wants to — but because trucking's nuclear verdict crisis has made the risks of public-road test drives too great for editors, manufacturers, and everyone involved.

Read More →
thermo king heavy duty trucking
Safety & ComplianceJuly 1, 2026

Enhance Fleet Performance with High-Efficiency Auxiliary Power Units

Drive sustainable cost savings while increasing driver comfort during short- and long-haul logistics operations.

Read More →
Ad Loading...
Maintenanceby Deborah LockridgeJune 23, 2026

Wabash Trailers Recalled for Improperly Installed Underride Guards

More than 900 Wabash dry van trailers may not comply with the Federal Motor Vehicle Safety Standard for rear impact guards.

Read More →
YouTube thumbnail with photo of K&B's Lance Evans with truck in the background and the words, Trucking's AI Wake-Up Call

Why K&B Trucking Is Embracing AI and Driver Safety Technology

Crunching data and embracing artificial intelligence are key in K&B Trucking's safety efforts, says the company's safety director.

Read More →
The Cyber Stop header showing an enforcement officer talking to a truck driver and a screen shot of the FMCSA's revoked ELDs list
Safety & Complianceby Ben WilkensJune 19, 2026

The Hidden Problem Behind FMCSA's ELD Revocations

NMFTA researchers say dozens of registered ELDs may be built on the same software platforms, allowing compliance and security concerns to persist even after individual devices are removed from the market.

Read More →
Ad Loading...
Illustration of inside truck cab with dashcam on window, definition of research, and ATRI logo

ATRI Wants Motor Carriers for Driver-Facing Camera Study

In this new study, the American Transportation Research Institute will explore how driver-facing cameras can impact safety and operational metrics in trucking fleets.

Read More →