hi all,

I've added a west malaysia rail line that starts from Singapore to west malaysia east coast (Kota Bahru).

this is gathered from rather imprecise GPS tracking and on several occasions i fell alseep on a 12 hour journey, there are gaps which i filled up with straight lines.
osm.org/browse/changeset/2537315

there are 2 rail lines in west malaysia peninsula, one running along the west coast and another along the central shelf to the east coast
1) Singapore - Gemas - Kuala lumpur - Penang - Alor Star
2) Singapore - Gemas - Tumpat

there is a common rail line between singapore - gemas shared by the 2 lines.

If you have more accurate info along the rail line, kindly assist to edit that. In addition, it is also missing the many stations along the route.
http://www.ktmb.com.my/%5Cimages%5Cdefault%5CTrainInformation.pdf

linked Gemas to west coast line (this is very imprecise, no GPS but it shows the region where the rail meets at Gemas). If you have more accurate data, kindly assist to edit that
osm.org/browse/changeset/2540782

found a web site which describe line (2) well: "The Jungle Railway" ;)
http://www.pbase.com/cathryn/junglerailway

And an interesting place / station along the route : Gua Musang
http://www.frednmich.com/gallery/gua_musang/
http://en.wikipedia.org/wiki/Gua_Musang