let me explain on how a bus from one depot bus can cameo on a
timeslot that belongs to another bus from another depot. This
applies to dual depot controlled services.
As you know buses are prone to breakdowns, accidents, traffic jams
and what have you. In any event of any of the above happens,
drivers in the service are instructed by the Operations Control
Centre (OCC) or the timekeeper at the bus int/terminal to 'cut
time'. it is basically cutting your break time (NOT meal breaks
where its mandatory) and not the running time.
say for example:
Service 143 controlled by brbp and slbp.
Order as follows-
brbp, brbp, slbp, brbp, slbp, slbp
Breakdown occured on the 1st slbp in the order.
Revised order would be-
brbp, brbp, brbp, slbp, slbp
so far so good?
let's say at Jurong East the departure times in the first order
are:
1400 1411 1421 1432 1445 1458
Due to the absence of the slbp bus which was supposed to depart at
1421, the buses behind and possibly (if notified early) the bus in
front will have their departure times adjusted.
Revised in the second order as follows:
1400 1414 1428 1442 1456
OR
1400 1411 1426 1443 1458
OR
any other combination as long as frequency is maintained or remain
constant
If departure time for the last bus in the order is 1456, the bus
after that might suffer 1/2 min in cut time. If its 1458, schedule
returns to normal.
so now you know how a bus from one depot bus can cameo on a
timeslot that belongs to another bus from another depot?