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.
The Transportation Technologies Office has published a Fact of the Week since 2009. To find archived Facts prior to 2019, please visit Oak Ridge National Laboratory's website.
