SHREVEPORT, LA. — New findings from the North Louisiana Crime Lab reveal that impaired driving in the region frequently involves more than alcohol, with drivers testing positive for combinations of marijuana, methamphetamine, cocaine, and prescription medications.
The laboratory analyzed six years of forensic toxicology data from suspected impaired-driving cases submitted by law enforcement agencies. The findings show that alcohol frequently appears alongside other substances, raising concerns about the combined effects on drivers and roadway safety.
One of the most striking findings is the average blood alcohol concentration among the cases tested: approximately 0.15%, nearly twice Louisiana’s legal limit of 0.08%…