Testing for drug use in drivers rests now primarily on urinalysis. But it has drawbacks.
Others argue that hair testing is preferable. But it has drawbacks too. Saliva testing? Easy to do, but it isn’t perfect.
On this week’s Drilling Deep podcast, two academics who have studied the issue join host John Kingston to discuss recent research they’ve completed on the various methods now in use and under discussion for the future. Douglas Voss from the University of Central Arkansas and Ron Gordon...