The LRT Ampang Line and the LRT Sri Petaling Line are medium-capacity light rapid transit (LRT) lines in the Klang Valley, Malaysia. The combined network comprises 45.1 kilometres of tracks (28.0 miles) with 36 stations and was the first railway in Malaysia to use standard-gauge track and semi-automated trains. It is operated as part of the RapidKL system by Rapid Rail, a subsidiary of Prasarana Malaysia. A trip from one end to the other takes 41 minutes on the Ampang Line, and 74 minutes on the Sri Petaling Line.