Bas Kilang...... its counterpart is Bas Pekerja...
the rate used to be 50sen from JB, 50cents from SGP. now not sure
still operating actively as before.. even got dedicated Bas Kilang
for cross-border passengers specially.. and the Bas Kilang was full
to the brim even on a weekday afternoon.... 
that time i took it was when 170 was still NAC. that time, 170
Queues was very very long and the waiting time was also very long..
its only recently that some 170 ends at Kranji... the 170 last time
all goes from Larkin to Ban San....