SBST Trunk Services 48-59

Service 57 [Bishan Int <-> Bukit Merah Int] [WAB]
SBS3764K SBS3793B SBS3797R (August 2009)

Bukit Merah Int > Bishan Int

SBS3797R (March 2010)

Bishan Int > Bukit Merah Int

SBS505L (September 2010)

Bishan Int > Bukit Merah Int