Sound Transit to begin 4-minute headway testing

On Friday, June 13, Sound Transit will be conducting the first test of four-minute headways, a key step to ensure operational readiness for future interlined service on the 1 and 2 Lines between Lynnwood City Center and International District/Chinatown stations.

To conduct this test, 12 non-revenue single-car trains will be slotted between 1 Line revenue service trains running a weekday peak headway of 8 minutes. These single-car trains will pause for 20 seconds at each station but will not open their doors. Passengers should not attempt to board the out of service test trains.

Sound Transit does not anticipate any impacts to service during this initial test, but some features, including real-time information, may be unavailable as the system adjusts to an increased number of trains.

A language line is available to provide translation assistance for limited English proficiency persons at 800-823-9230.

Sound Transit remains committed to working closely with its partners to continue serving the public. Efforts will continue to prioritize serving riders who depend on Sound Transit’s services, including seniors, people with disabilities, Title VI protected populations (race, color, national origin), low-income and limited-English-proficiency populations.

Riders can sign up to receive automatic email service alerts for Link light rail, ST Express, T Link, Sounder N Line and Sounder S Line. Rider Alerts provide information about schedule changes and help riders plan trips around inclement weather. Just go to our service alert page.