

Trains are composed of two or more cars that each can carry 194 passengers, including 74 in seats, along with wheelchairs and bicycles. It runs for 20 hours per day on weekdays and Saturdays, with headways of up to six minutes during peak hours, and reduced 18-hour service on Sundays and holidays. The 1 Line carried over 25 million total passengers in 2019, with an average of nearly 80,000 daily passengers on weekdays. The line connects the University District, Downtown Seattle, the Rainier Valley, and Seattle–Tacoma International Airport. It serves 19 stations in the cities of Seattle, SeaTac, and Tukwila, traveling nearly 25 miles (40 km) between Northgate and Angle Lake stations.

The 1 Line, formerly Central Link, is a light rail line in Seattle, Washington, United States, and part of Sound Transit's Link light rail system.
