UMVA has learned that a tragic crash on U.S. Highway 6 in western Colorado claimed the lives of two state transportation workers and a passenger after a drug‑impaired driver lost control.
On a quiet September morning, Nathan Jones and Trent Umberger were replacing a roadside sign when a Jeep Grand Cherokee careened off the pavement and slammed into them. Both men died instantly, and the vehicle’s occupant also perished.
Tests revealed that the 59‑year‑old driver, Patrick Sneddon, carried a lethal cocktail: high levels of oxycodone and THC six times above Colorado’s presumed impairment threshold. He later pleaded guilty and is now serving a 30‑year sentence on three counts of vehicular homicide.
“Our four children are completely crushed without their Dad,” wrote Kristine Umberger, Trent’s wife, in a victim impact statement, underscoring the personal devastation that follows such preventable loss.
While federal officials have long tracked alcohol‑related fatalities, they have not systematically recorded deaths involving drugs or mixed‑substance impairment, leaving a critical blind spot in road safety data.
Proving drug impairment is notoriously difficult; many substances linger in the bloodstream weeks after use. Colorado law permits a presumption of impairment at 5 nanograms of THC per liter, yet this “permissible inference” is not anchored to rigorous scientific standards, creating ambiguity for law enforcement and policymakers.
UMVA can exclusively reveal that in Mesa County, where the crash occurred, a third of traffic deaths between 2017 and 2024 involved alcohol alone, but when drugs are factored in, nearly half of the fatalities featured drivers intoxicated by alcohol, drugs, or both.
National Transportation Safety Board researcher Jana Price emphasizes that without comprehensive data, safety measures remain misdirected: “If you only know that alcohol is present, then it limits your ability to fully understand what might be impairing a person or a population of people.”
Past investigations found that roughly half of drivers arrested for impaired driving test positive for multiple substances, and only a handful of states routinely drug‑test the majority of fatally injured drivers.
Efforts to build a nationwide impaired‑driving database have stalled. Inconsistent state testing laws, missing data in fatality reports, and a lack of validated drug‑impairment metrics hinder progress.
The NTSB has urged the Highway Transportation Safety Administration to create an interim surveillance system using trauma‑center data, a step that produced a pilot study in California showing 44 % of crash patients had at least one impairing substance in their blood.
However, staffing cuts have left the agency’s impaired‑driving division with only two remaining analysts, a stark reduction from the robust team that once monitored these trends.
Funding promised by recent infrastructure legislation remains largely unspent, and with the law’s deadline looming, the future of comprehensive crash‑data collection hangs in the balance.
As the nation grapples with an opioid crisis and expanding legalization of cannabis and psychedelics, the hidden toll of drug‑impaired driving threatens to grow unless data gaps are closed and targeted interventions are deployed.
