well, if the bus started early, but every bus stop have to stop
to take in passenger and let them alight then it is very comman
that the bus which set off later would catch up due to lesser
commuter. It is a very well known common knowlegde.
So if I waited very long and a crowded bus come, I would wait an
extra 5 minutes for the next to arrive... which is usually less
crowded.
But sometimes if you get buses that kena 拉分 by timekeeper, meaning
they delay departure of the bus due to either missing slots
resulting from breakdown, undespatched buses or previous arrival
very late, then you wait 50% longer for your bus, but next bus is
also 50% longer waiting time. SMRT loves to practice 拉分.
Anyhow like to pull here pull there, frequency go haywire. Once you
start pulling it's very hard to pull back to original scheduled
times unless there's an incoming wave of long breaks.
I've ever encountered 1 851 duty in the morning 拉分 by timekeeper
15 minutes, covering another 3 missing slots. From 6.08am - 6.36am
there is just one bus. 