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.

Regulations

In This Section

Updated Principles for Risk Analysis

This Memorandum reinforces the 1995 Principles with reference to more recent guidance from the scientific community, the Congress, and the Executive Branch.

Value of Travel Time

Departmental Guidance for the Valuation of Travel Time in Economic Analysis (2011).

Regulatory Impact Analysis: Frequently Asked Questions (FAQs)

The purpose of this document is to offer answers to questions often asked with respect to regulatory impact analysis; nothing said here is meant to alter existing requirements in any way. For more complete guidance, please consult Executive 13563, Executive Order 12866, and Circular A-4.