mayb amended svc 27, here how the route goes:
Aft Tampines Ave 5, Simei Ave, Xilin Ave, ECP, Changi Airport [From
Hougang]
[Towards Hougang] Changi Airport, ECP, Xilin Ave, Simei Ave,
Tampines Ave 5(then normal route)
Purpose is cos Simei Ave outside & opp ITE College East only
svc 31.
I know in the past svc 23 pass tampines ave 5 straight to PIE but
now pass by temasek poly then ave 10 then bedok north rd then
PIE.