[Stay on top of transportation news: Get TTNews in your inbox.] Motor carriers must continue to conduct random drug tests with 50% of their truck drivers and random alcohol tests with 10% of their ...

Nearly half the states now have laws legalizing recreational marijuana, with half of the general population and 41% of truck drivers now living in states where recreational marijuana use is legal.

The DOT's proposed rule would add fentanyl and norfentanyl to drug testing panels for safety-critical roles such as CMV drivers, with detection thresholds as low as 1 ng/mL in urine. The fentanyl ...