FRA – Federal Railroad Administration
Who is covered?
A person who performs hours of service functions at a rate sufficient to be placed into the railroad’s random testing program. Categories of personnel who normally perform these functions are locomotive engineers, trainmen, conductors, switchmen, locomotive hostlers/helpers, utility employees, signalmen, operators, and train dispatchers.
(Definition from Office of Drug and Alcohol Policy Compliance)
Where can I find the regulations for my designated agency?