The Brief Sound Transit light rail stations in Seattle shut down twice due to ventilation system issues. Passengers were rerouted to buses between University District and Westlake stations. Riders on Sound Transit’s light rail system were forced to find new routes twice in three days after ventilation system problems shut down stations and trains in Seattle. Because the fans are part of the emergency fire safety system, passengers are not allowed in tunnels when they fail. Image 1 of 2 ▼ Crowd outside light rail station after disruptionsThe shutdown forced passengers off trains and onto buses between the University District and Westlake stations on Saturday.