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.

The latest general information on the Coronavirus Disease 2019 (COVID-19) is available on Coronavirus.gov. For USDOT specific COVID-19 resources, please visit our page.

Contacts

OST-R Office of Positioning, Navigation and Timing & Spectrum Management

Karen L. Van Dyke
Director, Office of Positioning, Navigation, and Timing (PNT)
Karen.VanDyke@dot.gov, (202) 366-3180

James A. Arnold
DOT Spectrum Lead
James.A.Arnold@dot.gov, (202) 366-8422

Elliott L. Baskerville
Electronics Engineer
elliott.baskerville@dot.gov, (202) 366-5284

National Coordination Office for Space-Based Positioning, Navigation and Timing

Harold W. Martin
Director, National Coordination Office for Space-Based Positioning, Navigation and Timing
harold.martin@gps.gov, (202) 484-4844

Commercial Trucking and Motor Coach Operations

Visit the Federal Motor Carrier Safety Administration (FMCSA) website for information concerning safety, registration and licensing and other related topics

Consumer Information on the Global Positioning System (GPS)

Visit GPS.gov to learn more about GPS, get help with address, route and map problems, and find answers to Frequently Asked Questions.

Last updated: Thursday, June 1, 2017