The KTM ETS commercially known as ETS which is stand for Electric Train Service is the fastest metre gauge trains service in Malaysia that currently operates as an inter-city rail service between the cities of Kuala Lumpur and Padang Besar on the Malaysia-Thai border by the Malaysian national railway operator, Keretapi Tanah Melayu.The trains travel up to 160 km/h (99 mph) on electrified metre gauge rail line which can be considered as higher speed rail based on passenger rail terminology instead of high speed rail.