This discipline-specific manual provides guidance for Federal and State HM inspectors regarding
inspection and investigative activities when evaluating regulated entities’ compliance with
Federal laws and regulations pertaining to the transportation of HM. The information in this
manual is intended to provide internal guidance, and does not provide any basis for a private
party to challenge FRA’s exercise of enforcement discretion in a particular case. The guidance
provided in this manual may be revoked or modified without prior notice at any time by FRA.
This manual supersedes all previous hazardous materials enforcement and/or compliance
manuals.