Charles, every time I take Sv. 156 during the weekend(I've taken
it from Bishan to Sengkang and Bishan to Clementi and vice-versa),
the bus is practically empty. No more than 20 other people will be
in the bus.
At night, there would be less than 10 people on the bus at any
given time. On weekdays however, it's a different story, I call my
Sv. 156 "Schoolbus service".
