There are five buses serving TP:

BUS 8
from Tampines Interchange / Toa Payoh Interchange
BUS 15
from Eunos Interchange / Pasir Ris Interchange
BUS 23
from Tampines Interchange, looping from Rochor Canal Road
BUS 69
from Tampines Interchange / Bedok Interchange
BUS 518
from Pasir Ris Interchange, looping from Orchard Road

Tampines (See schedule)

Pick-up Point @ Tampines Central 4 (Next to Tampines MRT)
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Serangoon (see schedule)

Pick-up Point @ taxi stand opposite Serangoon MRT Station Exit A
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Clementi (see schedule)

Pick-up Point @ Carpark
(Exit B from Clementi MRT Station)
Pickup
View map

Alight at Tampines MRT Station,
and transfer to Bus 8, 23, or 69 at the Tampines Bus Interchange

Alight at Bedok MRT Station,
and transfer to Bus 69 at the Bedok Bus Interchange