- 2004 – 25 Jun 2016: SBS Transit Ltd
- 26 Jun 2016 onwards: Tower Transit Singapore Pte Ltd
The Bus Service Operating License (BSOL) for this route will be renewed in 2021 under the Bulim Bus Package.
- 2004 (22 Aug): Introduced by SBST to ply between Jurong East and Kent Ridge Ter via Toh Guan Rd East and Commonwealth Ave West.
- 2005 (03 Oct): Extended to loop at Science Park Rd, skipping Kent Ridge Bus Terminal.
- 2008 (01 Dec): Designated wheelchair-accessible bus route (WAB)
- 2010 (16 Aug): New short trip service 183B introduced from Jurong East to Toh Tuck Ave
- 2013: Service improvement under the Bus Service Enhancement Programme (BSEP)
- 2016 (26 Jun): Operations handed over to Tower Transit Singapore Pte Ltd from SBS Transit Ltd
- Refer to this article
- 2005: Amended to present routing. No significant route changes since 2005.
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