According to monthly statistics released by the Federal Motor Carrier Safety Administration’s (FMCSA) Drug & Alcohol Clearinghouse, 13 percent of drug-testing violations collected by the clearinghouse during the first half of the year were classified as “refusals” during pre-employment screening. David Osiecki, president, and CEO of Scopelitis Transportation Consulting, told FreightWaves that this data is a good proxy for how often drivers attempt to defeat a urinalysis test. The new data could lead to a renewed push for motor carrier hair-testing requirements. Guidelines from the U.S. Department of Health and Human Services on using hair tests to detect drugs in the workplace were sent to the White House Office of Management and Budget (OMB) last year and are still pending.