Sounder commuter trains are a regional rail service in the Puget Sound area of Washington State. Operated by Sound Transit, these trains connect major cities like Seattle, Tacoma, and Everett, providing a convenient transportation option for daily commuters. The service features two main lines: the North Line and the South Line. Sounder trains offer comfortable seating, bike storage, and amenities like restrooms, making them a popular choice for those traveling to work or leisure activities in the region.