not sure if this is the right thread to post this piece of
information.
i have found out that some duties from AM 171 does overnight
parking @ Sembawang Interchange, code name SEDEP. currently found
out about 171AM/PM07 and 171AM/PM10. the duties that do overnight
parking @ SEDEP all start from Yishun in the morning, hence
eliminating duties which start @ MCT, like AM/PM15.
Runtime between SEDEP & Yishun Int: 10min
Runtime from Yishun -> AMDEP -> SEDEP: 34-35min
now, thing is that, there couldn't be only 1 service doing
overnight parking at that interchange. i'm thinking that AM 167 and
AM 980 might be involved as well, or maybe AM 882. anybody who is
more specialised in SBW services would be able to help me out in
checking?