KTM Komuter is an electrified commuter train service first introduced in 1995, catering especially to commuters in Kuala Lumpur and the surrounding suburban areas. KTMB provides 248 commuter services daily, serving 45 stations along 175 route-kilometres. The network consists of three lines: Tanjung Malim-Sungai Gadut Line, Sentul-Port Klang Route and the Rawang-Tanjung Malim. Trains on the two lines run at 15 minutes frequency during peak hours and 20 minutes frequency during off-peak hours. The Rawang-Tanjung Malim shuttle services operates at half hour frequency. Komuter coaches are currently the most modern in the KTM fleet and are air-conditioned. The KTM Class 81, KTM Class 82, KTM Class 83 and KTM Class 92. The KTM Class 91 is for the ETS Line only.
KTM Komuter is a heavily utilised mode of transportation by commuters working in Kuala Lumpur as the service is an alternative for road travel, which is occasionally hampered by congestion. Virtually all KTM Komuter stops offer "Park & Ride" parking lots for those who drive to and from the station or halt. KTM Komuter ridership is estimated to be about 50 million passengers in 2010.
KTM Komuter is currently the most profitable passenger service offered by KTMB, contributing MYR 100 million to group revenue in 2010, higher than KTM Intercity's profit of MYR 70.94 million in the same year.
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