Procedure for Moving an Area from One Time Zone to Another

Under Federal law, there are two ways in which an area in the United States can be moved from one time zone to another.

Uniform Time

The U.S. Department of Transportation (DOT) oversees the Nation's time zones.  The oversight of time zones was assigned to DOT because time standards were first instituted by the railroad industry. 

Mission

Ensure that the drug and alcohol testing policies and goals of the Secretary of Transportation are developed and carried out in a consistent, efficient, and effective manner within the transportation industries for the ultimate safety and protection of the traveling public. This is accomplished...

Staff Directory

Staff directory for the Office of Drug and Alcohol Policy and Compliance (ODAPC)

Frequently Asked Questions

The following are some of the questions the Office for Drug and Alcohol Policy and Compliance (ODAPC) has received which did not require an interpretation but rather a general response. As such, the ODAPC staff thought that those subject to Department of Transportation (DOT) testing would...

News and Events

In an effort to educate the transportation industry and others that provide service in accordance with the Department's drug and alcohol testing programs, our staff participates in conferences, trainings and seminars throughout the country. Events, dates, locations, and registration information...

DOT Agency Information

As a result of the Omnibus Transportation Employee Testing Act of 1991, the following DOT Agencies established drug and alcohol testing regulations to ensure that aircraft, trains, trucks, and buses were operated in a safe and...

Substance Abuse Professionals (SAP)

The Substance Abuse Professional (SAP) is a person who evaluates employees who have violated a DOT drug and alcohol program regulation and makes recommendations concerning education, treatment, follow-up testing, and aftercare.

As a SAP you represent the major decision point (and in some...

Medical Review Officers

A Medical Review Officer (MRO) is a person who is a licensed physician and who is responsible for receiving and reviewing laboratory results generated by an employer's drug testing program and evaluating medical explanations for certain drug test results.

As a MRO, you act as an...

Drug Testing Laboratories

Drug testing laboratories certified by the Department of Health and Human Services receive urine specimens and test them to determine the presence of drugs. They also conduct validity testing to determine if the specimen has been adulterated or substituted.

A laboratory located in the U.S...