SMRT Volvo B9TL Wright (SG5128X) – Joo Koon—Gul Circle Shuttle Service SMRT Volvo B9TL Wright (SG5128X) – Joo Koon—Gul Circle Shuttle Service SMRT Volvo B9TL Wright (SG5128X) – Joo Koon—Gul Circle Shuttle Service