Driving on 'High Holiday' 4/20 increases risk of fatal crash, study finds
NASHVILLE, Tenn. (WZTV) - A study examining crash data over a 25-year period found driving on April 20 ("4/20") after 4:20 p.m. presents a 12-percent increase in relative risk of a fatal traffic crash.
Doctors from British Columbia reviewed fatal motor vehicle crash reports in the U.S. reported by the U.S. National Highway Traffic Safety Administration from January 1992 to December 2016.
The doctors analyzed the number of crashes in which at least one person died on April 20 from 4:20 p.m. until 11:59 p.m. and compared it with crashes during the same time intervals one week before and one week after.
In total, researchers found 1,369 drivers were involved in fatal crashes after 4:20 p.m. on April 20, whereas 2,453 drivers were in fatal crashes on the control days. The result was 7.1 fatal crashes per hour on 4/20 after 4:20 p.m. versus 6.4 per hour on the control days.
The researchers say the observed association can be compared to the increase in traffic risks observed on Super Bowl Sunday.
The study was published Monday in the JAMA journal of Internal Medicine.