An official website of the United States government
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
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.
Use the search box below to find documents and web pages from the FRA Office of Safety Analysis, including FRA Forms, User Guides, Publications, Reference Tables, and Database File Structures. Search by the Document title, and/or filter by the topic to view relevant results.