If I'm not wrong, 179 and 255 can go Pioneer stn (3 stops
only).
As for Joo Koon, 252 can reach (12 stops).
for 252, I am pretty sure 12 stops wont reach Joo Koon. maybe
18-20.
I took it once two or three months back on board a VO2x. quite a
jerky and loopy ride. be prepared.
as for 179, it is 3 stops from the interchange to reach Pioneer.
same for 255. the two routes part ways after that stop (I
believe).