Quite bored during the hols so i made this. (apologise if its
alittle messy)

made after looking at the current 154 timings. Sub a few S Shift
here and there to make service cohesive. Here's a copy of my most
elaborate block. I decided to sub sv90 during that time as the bus
in front and behind is about 11minutes apart as compared
to timings around it at 9mins of course i adjusted a little of sv90
to become like that.
Any comments? I know this block a lot of down routing which some
drivers like but its placed at timings with the demand and it keeps
early
. Something drivers look forward to.
Block goes like this:
1) OFF SVC BRBP - 17151 Cwealth Ave West (Blk 410)
2) S154 17151 Cweath Ave West (Blk 410) - 22009 T1
(Boon Lay Int)
3) S154A 22009 T1 (Boon Lay Int) - 12101 Clementi Rd (Ngee Ann
Poly)
4) OFF SVC 12101 Clementi Rd (Ngee Ann Poly) - 21029 Jln Ahmad
Ibrahim (aft Corporation Pl)
5) S154 21029 Jln Ahmad Ibrahim (aft Corporation Pl) - 82009 T2
(Eunos Int)
6) OFF SVC 82009 T2 (Eunos Int) - BRBP
7) NO PAY SWING at BRBP from 0859-1300
8) OFF SVC BRBP - 82009 T2 (Eunos Int)
9) S154 82009 T2 (Eunos Int) - 22009 T1 (Boon
Lay Int)
10) OFF SVC 22009 T1 (Boon Lay Int) - 21029 Jln Ahmad
Ibrahim (aft Corporation Pl)
11) S154 21029 Jln Ahmad Ibrahim (aft Corporation Pl) - 82009 T2
(Eunos Int)
12) OFF SVC 82009 T2 (Eunos Int) - 73019 T2 (Airport Rd - RSAF
Roundabout)
13) S90 73019 T2 (Airport Rd - RSAF Roundabout) - 52009 T1
(Toa Payoh Int)
14) OFF SVC 52009 T1 (Toa Payoh Int) - BRBP
End shift! 
Haha, should ask the BC lend u the timetable when you take the
whole route of 154. Then you copy whole thing.