The Kansas Highway Patrol is joining enforcement agencies in five other states in cracking down on impaired driving this weekend.
April 20, or 4/20, is a stoner holiday when people tend to smoke more marijuana than usual. The enforcement effort begins Friday and extends through the weekend.
Nebraska, Iowa, Missouri, Arkansas and Oklahoma are also participating in the enforcement effort that targets drug and alcohol impaired driving.
The Wichita Police Department and the Sedgwick County Sheriff's Office are also participating in the effort to reduce what has been called an "increasing epidemic."
The Journal of American Medical Association found a 12 percent increase in the relative risk of a fatal crash after 4:20 p.m. on April 20, compared to the same time intervals on other days.
Of the 462 fatalities on Kansas roadways last year, 20 percent involved a drug-impaired driver, Kansas Highway Patrol Lt. Adam Winters said in an prepared statement.