OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

January 13, 1992

The Honorable Guy Vander Jagt
House of Representatives
Washington, D.C. 20515

Dear Congressman Vander Jagt:

Thank you for your letter of December 20, 1991, on behalf of your constituent, Mrs. Helen Forbes, who is seeking information on the law requiring drug testing for long distance truck drivers.

The Department of Transportation (DOT) has the authority and responsibility for promulgating and enforcing regulations related to the trucking industry. I have referred your letter to Mr. Richard P. Landis, Associate Administrator of the Office of Motor Carriers, Federal Highway Administration at DOT and a copy of that referral letter is enclosed.

I hope this information is of assistance to you and Mrs. Forbes. If we can be of further assistance, please do not hesitate to contact us.


Gerard F. Scannell
Assistant Secretary