© 2021 WOSU Public Media
Play Live Radio
Next Up:
0:00
0:00
Available On Air Stations
News Partners

No Easy Way To Measure How Much Marijuana Impairs Drivers

The motorcade of US President Barack Obama drives down the highway in Los Angeles, California, March 12, 2015. (SAUL LOEB/AFP/Getty Images)
The motorcade of US President Barack Obama drives down the highway in Los Angeles, California, March 12, 2015. (SAUL LOEB/AFP/Getty Images)

 

A new study out Tuesday from the AAA Foundation for Traffic Safety finds that it is very hard to accurately measure through a blood test whether someone’s driving is impaired because of marijuana.

Another AAA study found that the number of fatal crashes involving a driver who had recently used marijuana doubled in Washington state in the year after recreational marijuana was legalized there. Here & Now’s Jeremy Hobson talks to Jake Nelson, the AAA director of traffic safety advocacy and research about both studies.

Guest

  • Jake Nelson, AAA director of traffic safety advocacy and research.

Copyright 2021 NPR. To see more, visit https://www.npr.org.