Sound Transit is piloting an updated pet policy on its buses and trains between now and Spring 2027. During the pilot, pet dogs will be permitted on board if they are leashed, well-behaved, and controlled by their handler. All other pets must remain in an enclosed carrier. As always, service animals are permitted in compliance with the ADA.
Prior to the pilot, dogs and other pets were only allowed on Sound Transit buses and trains in a carrier. In July 2025, the Sound Transit Board approved Motion No. M2025-34, directing the agency to consider updating the rules to allow leashed dogs. This motion was motivated by the opening of Marymoor Village station as part of the Downtown Redmond Link Extension in May 2025. Marymoor Village station is next to Marymoor Park, a 640-arce park which includes a 40-arce off-leash dog area.





