Why are the schedules for buses static when the traffic
conditions is a variable factor.
Obviously the scheduling technique is not suited for customer
information. Its more like for the bus driver. When to leave the
interchange and when to reach the destination by ? Im not so sure
about this, im not a driver. 
Anyway even if a real time tracking system is implemented by our
bus companies in singapore, i cant imagine how inaccurate it would
be.
Afterall our EZ Link system is the lamest transport system ive
seen. Its programming is really "expert"
Eg. When you buy a bus concession on 1st may. and you realise u
want to buy a mrt concession on the 3rd of may. But wait! you cant.
Cos the system doesnt allow that. You have to buy both at the same
time or wait for the bus pass to finish den buy the mrt pass. ( i
experienced this personally)
So unless there are some radical changes done to the Technology
departments of our bus companies, we can expect not to know when
the busses are coming.
Because..... Traffic conditions are not predictable.HAHA 