A new study reveals that the U.S. Department of Transportation may be underreporting cocaine abuse by truck drivers, a finding that could put more pressure on federal regulators to allow hair testing as an alternative to urine testing for preemployment drug screening by trucking companies.
Because the Federal Motor Carrier Safety Administration’s Drug & Alcohol Clearinghouse does not allow hair test results to be included in the database, DOT “is seriously underreporting the actual use of harder...
https://www.freightwaves.com/news/truckers-using-cocaine-more-than-marijuana-study-finds