What if the truck driver passed a post-crash drug test — does that mean fatigue is off the table?

What if the truck driver passed a post-crash drug test — does that mean fatigue is off the table?

Absolutely not. Post-crash drug and alcohol testing does not test for fatigue. A driver can be completely sober and still be dangerously impaired by sleep deprivation. HOS log violations, ELD data, and driver history remain highly relevant evidence of fatigue regardless of drug test results.