Washington State Transportation Commission
- Serves as the board of directors of the Department of Transportation, providing oversight to ensure the Department delivers quality transportation facilities and services in a cost-effective manner.
- http://www.wstc.wa.gov/

Washington Trucking Association
- A nonprofit corporation whose purpose is protecting and promoting the interests of all segments of Washington's trucking industry.
- http://www.wtatrucking.com/

AirNav.Com
- Listing of airports by city. Includes location and map, operations, services, communication aids, navigation and runway details, and contacts.
- http://www.airnav.com/airports/us/WA

SHG Resources - Washington Traffic, Weather, and Ski Center
- Provides access to real-time road and weather conditions, construction and traffic updates, cams, and ski reports. Also includes mountain pass conditions.
- http://www.shgresources.com/wa/traffic/

NEXUS
- A joint customs and immigration program for frequent travellers that both the Canadian and American governments have implemented.
- http://www.getnexus.com/

Washington State Traffic Safety Commission
- Spotlights current programs and new proposed legislation, with traffic and safety statistics and grant opportunities.
- http://www.wa.gov/wtsc/

Washington State Ferries
- Schedules, fares, route maps, fleet guide, news and travel information.
- http://www.wsdot.wa.gov/ferries/