USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Field Operations Organization

About Field Operations Organizations

Field Operations serves under the executive leadership of the Associate Administrator for Hazardous Materials Safety, and the Deputy Associate Administrator Field Operations. There are six operating units in Field Operations. Within the six operating units there are investigators, transportation specialists, and administrative staff that serve to increase responsiveness for the nation.

        Field Services Support, Washington, DC
        Eastern Region, West Trenton, New Jersey
        Southern Region, Atlanta, Georgia
        Central Office, Kansas City, MO
        Southwest Region, Houston, Texas
        Western Region, Ontario, California

Deputy Associate Administrator Field Operations

The Deputy Associate Administrator oversees all field operations nationwide and advises the Associate Administrator on all field activities concerning hazardous materials transportation safety and security.

Field Services Support

The Field Services Support includes:

Enforcement Policy Branch, Fitness Branch, and Investigator Qualifications Branch, Staffed by the Division Director, Enforcement Officer, Fitness Branch Chief, National Training Officer, and Administrative support staff. The Enforcement Officer serves as the primary liaison between enforcement operations and PHMSA’s Office of Chief Counsel for enforcement actions and legal determinations and matters. The Enforcement Officer also serves as a senior technical advisor for Field Operations. The Fitness Branch performs reviews and determinations regarding entities that request or operate under a special permit or approval. The Investigator Qualification Branch leads and executes the national Field Operations Investigator Training and Certification Program to PHMSA Investigators and to members of Federal, State, Local and Tribal hazardous material enforcement organizations as requested or directed.


Field Operations regional offices conduct a wide variety of inspections and investigations to ensure compliance with the Hazardous Materials Regulations (HMR).