There are these 4 services A - D.
A and C are single depot controlled.
B and D are dual depot controlled.
B was initially single depot but was ammended to be dual
depot.
A B and C used to come from the same depot until B and C
moved to a nearby depot.
B, C and A(note the order) are consecutive services
C and D start their journey from interchange E, and exit from the
same side. But the two split up immediately after exiting.
A comes out from its interchange, and meets C at a bus stop near
MRT station F which is near [A's] terminus.They come to a traffic
junction, where A split and go one big round, pass by its
interchange one more time, before rejoining C at Road G. Both
services will travel together till they reach A's terminating
point.
B come from the same interchange as A but they exit at different
sides and don't really meet at all along their route. The only time
they meet is the time where A is turning into the
interchange.
Anyway carrying on, after the interchange, B and C travel together
till they reach a junction near hospital H. where C will will make
a detour before rejoining with B and both will continue on their
journey till the reach expressway I. B will remain on Avenue J and
proceed to its looping point, while C will mount up the expressway
and rejoins with D.
Both services will travel together until they reach Exit K, where D
will exit expressway L and proceed to its terminating point, while
C will remain on the expressway and go to its looping
point.
What are services A - D, Interchange E, MRT Station F, Road G,
Hospital H, Expressways I and L and Exit K and Avenue J?
A: 859
B: 857
C: 858
D: 161 (neglecting Jln Kayu)/168
E: WRI
F: Sembawang Stn
G: Sembawang Rd
H: Khoo Teck Puat Hospital
I: SLE
J: Lentor Ave
K: Punggol Rd (161), Tampines Ave 12 (168)
L: TPE