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.
Poster with graphic representation of the geodatabase schema for the National Transportation Dataset (NTD).
This poster depicts Version 2.0 of the model. October 1, 2019.
Public Domain.
