More Drivers ‘Under the Influence’ Testing Positive for Multiple Drugs

June 27, 2014

Since 1993, the profile of a drugged driver has changed substantially. More drivers are now testing positive for prescription drugs, cannabis, and multiple drugs, and they are more likely to be older than 50, according to a study released in Public Health Reports.

“While we’ve seen a decrease over the years in motor vehicle fatalities involving people under the influence, the nature of those crashes is changing,” said study author Fernando Wilson, PhD, associate professor at the University of Nebraska Medical Center.

The study examines trends in the characteristics of U.S. drivers who have been involved in fatal crashes between 1993 and 2010 and test positive for drugs. The study was funded by the Public Health Law Research program of the Robert Wood Johnson Foundation to investigate the relationship between state laws and the consumption of alcohol and other drugs on fatal car crashes.

The study finds that the percentage of drugged drivers with three or more drugs in their system nearly doubled from 1993 to 2010, increasing from 11.5 percent to 21.5 percent. “In 1993, about 1 in 8 drivers were using multiple drugs concurrently. By 2010, it was closer to 1 in 5. That’s a large increase in drug use,” Wilson said.

“Beyond that, we’re also seeing more and more people using drugs and alcohol together. About 70 percent of drivers who tested positive for cocaine had also been consuming alcohol, and almost 55 percent of drivers who tested positive for cannabis also had alcohol in their systems,” he explained.

The study also notes trends in drug use associated with age: Almost 60 percent of marijuana-only users were younger than 30 years old, and 39 percent of prescription users were 50 years old or older.

This trend seems to be in line with an overall increase in the use of prescription drugs by Americans, and the older population in general—90 percent of people ages 65 and older have prescription expenses.

“These trends are likely to continue into the future given the aging U.S. population, an increasing reliance on prescription medications by medical providers, and increasing initiatives to legalize marijuana,” Wilson said. “However, it is unclear whether current state policies are completely up to the challenge of addressing the growing issue of drugged driving.”

Eighteen states currently have “per se,” or zero tolerance, laws for drugged drivers. Recent studies have shown, however, that these laws may not have been effective in decreasing traffic deaths.

To address these trends the authors suggest that policymakers consider measures to increase primary prevention of drug use by drivers, including curbing prescription drug use by drivers through counseling by medical professionals, and increasing affordable access to mass transit.

In 2010, 42 states had prescription monitoring programs that included Schedule II drugs (prescription drugs). These programs are meant to curb drug abuse, and specifically prevent overdose.
Source: University of Nebraska Medical Center

Latest Comments

  • June 27, 2014 at 6:38 pm
    Baxtor says:
    Easy solution. If your pain is so bad that you need to be hopped up on pain meds three to four times a day and you renew your script right on the renewal date every month, ta... read more
  • June 27, 2014 at 5:47 pm
    Agent says:
    More drivers are under the influence of their cell as well. Texting and driving is the most dangerous things a driver can do.
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