Hello PT21.
Actually you are wrong here.
1. Volvo Super Olympians are deployed on service 143 when the VSOs
first came into service. However, due to some advertising contract
problems, they are taken off.
2. Services in the west uses VSO too. In fact, 3 VSOs have made
appearances on service 157 (Bedok - Clementi) and one on the
service 7. Infact, the west is the likely candidate to get new
buses if there's any.
3. Service 143 uses a few Volvo Olympians and MK4 DM3500 back then.
It's just that SBS Transit is phasing out the Leyland Olympian 2
axles, and that is why the deployment is a little unstable
now.
Let's hope that the West will get more new buses. (My fav service
166 will benefit too!!
)
Have a nice day.