The additional 2 slots are given P shifts only, 19P & 20P, they
don't have A shifts for the slots. Means driver takes bus direct
from SLBP to start work. Perhaps service_238 can elaborate on
what's the reason behind in adding P shifts but not fullday
slots.
Sometimes adding P shift doesnt mean that night demand is more than
the day. Dont forget in the day there's the S/E shifts to cover. In
a sense, if you put the morning S shift and the P shift together -
you get a full day slot less the period between 1100-1500hrs.
PM S shifts in this way helps in the A/P meal break and the run
time during pm peak, given that frequency stays the same and run
time difference is not very significant. That is why sometimes for
some services during morning peak the S shifts has no driver due to
shortage but there's a driver during PM peak due to A shift drivers
doing OT.
zlichster this also answers your question.
