Weekday about 4.30 to 4.50 pm is the rushing time for SBS
captains with great concern about peak hour commuters
For example, four buses are departing about 5 minutes interval and
to reach a popular bus stop at 5.05, 5.10, 5.15 & 5.20 pm
respectively.
The bus captains are trying to leave terminal a few minutes earlier
than the schedule time, driving faster and avoid stop at bus stops
by hiding right behind the bus in front so commuters can't see the
bus number.
So the first three buses are arrived almost at the same time before
5.05 pm of the popular us stop and before large crowd of commuters
arrive at the bus stop, so most of the commuters can only catch the
forth bus, which is overload with peak hour crowd and arrive only
after 5.20 pm.
To the bus captains, reaching bus terminal early means less
workload and more rest time but the peak hour commuters will need
to wait at least 15 minutes for a very crowded bus every day.