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END420DUI Oklahoma Campaign Information

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Why 4/20?

According to Wikipedia, "420, 4:20, or 4/20 (pronounced four-twenty) is a code-term in cannabis culture that refers to the consumption of cannabis, especially smoking cannabis around the time 4:20 p.m. and smoking cannabis in celebration on the date April 20 (which is 4/20)"

As part of the "420 culture" and tradition, many cannabis users will choose to "light up" at 4:20 (presumably 0420 hours and 1620 hours) in celebration of the day. This could lead to an influx of drivers who are under the influence of marijuana on Oklahoma roadways.

What is #END420DUI Oklahoma?

This campaign is a 42-hour enhanced enforcement mobilization designed to deter impaired driving by identifying and arresting drivers who are under the influence of marijuana, alcohol, or other intoxicating substances.

Six states in our region are participating in a similar enforcement campaign with an ultimate goal of ending the practice of driving while impaired by drugs.

A Journal of the American Medical Association study shows a 12 percent increase in the relative risk of fatal crashes after 4:20 pm on April 20th compared to identical times on different days.

Logistics for the Mobilization

The campaign kicks off with a press event held at Pops in Arcadia where members from participating agencies will be on hand to announce the campaign and answer questions.

The enforcement will start at midnight on April 20th and will end at 1800 hours on April 21st, 42-hours of enhanced enforcement.

Law enforcement from local, county, and state agencies will be participating in the campaign. How you and your agency choose to participate is up to your command staff.

Agencies who have Drug Recognition Experts (DREs) and Advanced Roadside Impaired Driving Enforcement (ARIDE) officers are encouraged to participate in this mobilization.

Using Highway Safety Grant Funding for Mobilization Expenses

Agencies who receive grant funding from the Oklahoma Highway Safety Office for traffic enforcement efforts, unless specifically funded using Section 405b funds, may use grant funding to support this mobilization. No additional funds will be made available for this mobilization, funds utilized must be part of an existing grant.

Data Collection

All participating agencies are asked to use the supplied form to report back on the activities of this campaign. Data to be collected includes:

  • Fatalities
  • Crashes
  • DUI Arrests
  • Citations
  • Drug-related Arrests
  • Felony Arrests
  • Traffic Citations Issued
  • Seat Belt Citations Issued

Drug-Related Fatalities and Injuries 2014-2016

Drug-related crashes are those where at least one driver has tested positive for any amount of drugs, or where a law enforcement officer suspected that a driver might be under the influence of either illegal drugs or medication. These numbers include prescription medication and other drugs that may or may not cause impairment.

Dot Map

Each dot represents one person injured or killed in a drug-related crash. Not all dots are visible on the map as more than one person may have been injured/killed in the same location. Click on a dot for more information about that individual(s).

Heat Map

The brighter colors show areas where a higher concentration of drug-related fatalities and injuries have occurred.



Enforcement: Oklahoma Highway Patrol Lt. Joe Williams
Joe.Williams@dps.ok.gov - (405) 317-2604

Reporting Data: OHSO Chief of Plans Jay Wall
Jay.Wall@dps.ok.gov - (405) 523-1583

Media/Public Outreach: OHSO Communications Manager Cody McDonell
Cody.McDonell@dps.ok.gov - (405) 479-7637

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