| AirNav.Com: Listing of airports by city. Includes location and map, operations, services, communication aids, navigation and runway details, and contacts. |
| Highways of Washington State: The State highway system, with emphasis on the history of various route numbers used over time. |
| NEXUS: A joint customs and immigration program for frequent travellers that both the Canadian and American governments have implemented. |
| 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. |
| Washington State Ferries: Schedules, fares, route maps, fleet guide, news and travel information. |
| Washington State Traffic Safety Commission: Spotlights current programs and new proposed legislation, with traffic and safety statistics and grant opportunities. |
| 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. |
| Washington Trucking Association: A nonprofit corporation whose purpose is protecting and promoting the interests of all segments of Washington's trucking industry. |