Testing & launch

Testing begins

Crews will complete construction in 2021, so why won’t the light rail open for service until 2023?

Great question! Testing the trains on the tracks at various speeds and frequencies is crucial to ensuring safe travel once service begins.

Safety certification is the critical final step. This includes tests, inspections and approvals from fire departments and others to ensure that our system will operate safely and efficiently once opened.

During the testing period, you will see light rail trains running on the tracks during different times of the day. Sound Transit will provide more information as this gets closer, but please remember:

  • Only cross at designated crosswalks and signalized intersections
  • Obey all traffic signs and signals
  • Always watch and check for trains when you are near tracks

All stations are on their way to completion.

We can't wait to ride with you!

Light rail train
Illustration of people at a light rail station