2018-07-08 Launch of SMRT Bus Service 991 & Tower Transit Feeder 941 Amendment Launch of SMRT Bus Service 991 & Tower Transit Feeder 941 Amendment 8 July 2018 Launch of SMRT Bus Service 991 & Tower Transit Feeder 941 Amendment New SMRT Bus Service 991 will be launched on Sunday, 8 July 2018. On the same day, Tower Transit Feeder