[1][2] Eleven inaugural services commenced operations by with NTUC Comfort operating four (1, 4, 6, 11) and Singapore Shuttle Bus (SSB) seven (2, 3, 5, 7–10), which plied between 16 fringe car parks, 7 city area termini and 49 selected bus stops with 88 25-30 seater single door Mercedes-Benz buses.

As the purpose of the CSS scheme was to serve working commuters, no services were operated on Sundays and public holidays.

The bus services that extended towards the housing estates in 1976 are as follows: On 25 June 1988, NTUC Comfort withdrew routes 1 and 4, citing a decline in commuter demand due to the MRT's opening.

The central workshop was at Ang Mo Kio Depot which handled all the preventive maintenance, repair works and major component overhauls.

On 9 July 2001, during the merger, the company was operating five routes and its depot was based at Lorong 1 Geylang Bus Terminal.

Prior to the withdrawal of route 608, it was the last of the Nissan Diesel U31RCN buses to pass by the old National Stadium, Maxwell Road as well as the old Supreme Court Building.