Swift stations were given a number of small improvements after the line opened. Curb bumpers were installed in June 2010 to help guide buses closer to the raised platform, and reduce the gap at the door. In 2012, a queue jump signal was installed northbound at the north end of the BAT lanes at 148th Street, allow Swift buses to merge into traffic. Real-time arrival signs debuted at Swift stations in 2013, featuring a countdown to the arrival of the next bus that is estimated using GPS units on coaches. In June 2015, the Washington State Department of Transportation removed part of the refuge island at the intersection of State Route 99 and Airport Road to create a through lane exclusively for Swift buses.