Long ago, there existed Anson Rd terminal. I've never seen the
actual terminal so I don't know if it's a roadside facility or
what. It should be located next to the Tanjong Pagar Complex. The
terminal was where the First TIBS Service Flagging Off Ceromony was
conducted. The service was 167. The site is now within the compunds
of the Tanjong Pagar Container Terminal and I believe it's
off-limits?

Anson Rd Terminal was never a roadside terminal. The terminal
comprises only a bus bay lots (which means no alighting/boarding
activities from that terminal) and a bus stop erected along Anson
Rd. Passengers would have to board the services from Anson Rd
Terminal from a bus stop at Anson Rd just near the terminal
itself.
Previously, the location of the terminal was at the entrance of
Tanjong Pagar Container Terminal, Scotts Green Rd.
Services from Anson Rd: 130, 131, 180, 186, 193, CBD1
As for 167, it used to terminate at Lim Teck Kim Rd.