U.S. Secretary of Transportation Mary E. Peters announced today new rules that will make it more difficulty for transportation workers to cheat on their required drug tests by requiring drug testing labs to analyze every test for tampering.

"We want to make sure there are no doubts about the ability of anyone working in transportations do their job as safely as possible," said Secretary Peters said. "There is no margin for errors when it comes to the safety of the traveling public."

The Secretary said the new rules would cover the nation's approximately 12.1 millions transportation employers, safety and sensitive transportation employees, collectors, labs, and medical review officers. She noted that under the terms of the rule, labs would no longer have the options of testing urine samples for signs of cheating, but instead would be required to testing every specimen for possible adulterants and urine substitutes.

"In addition, all collectors will be required to put in place new procedures designed to prevents tampering with drug tests," the Secretary said. For example, observation procedures will include checking employees for items designed specifically to cheat the test. The rules also require collectors to observe all tests for transportation workers who return to their jobs after a previous test failure. Secretary Peters added that the Department would treat any invalid test results as the same as a refusal to be tested by any employee who admits to tampering with or adulterating their test.

The U.S. Department of Transportation regulates drug and alcohol testing of safety and sensitive transportation employees in the aviation, motor carrier, railroad, transit, pipeline, and maritime industries. DOT publishes rules on who must conduct drug and alcohol tests, when to conduct those tests, and what procedures to use when testing.

The Drug and Alcohol Testing Final Rule was published June 25, 2008 in the Federal Register. The effective date of the Final Rule is August 25, 2008.