Keretapi Tanah Melayu Berhad or literally "Railway Company of the Malayan States" is Malaysia's national railway operator. Sometimes referred to as "KTM" or "KTMB", the service originated from a railway system left by the British when they colonised Malaya.
There are two main routes from Singapore through Malay Peninsula into Thailand, the eastern and the western line.
Apart from a short tourist line there are no rail services in East Malaysia. However, the railway Tenom - Kota Kinabalu in Sabah is being renovated to be put in full use again (map).