[2] It is a railway junction of the southern section of the Chennai Suburban Railway Network situated in the town of Chengalpattu, 56 kilometres (35 mi) south-west of Chennai Beach.

It is situated on the SH-58, and opposite to its main entrance lies the TNSTC and Mofussil bus terminals.

The Chengalpattu Junction being a focal point on the Chennai–Villupuram line, inevitably means that every south-bound train from Chennai has to operate via the junction thus making it one of the most crowded railway stations of the Indian Railways.

There also several suburban trains operating from and through the station towards Chennai and the station holds prime importance in the South and South-west lines of the Chennai Suburban Railway.

This article about a railway station in the Indian state of Tamil Nadu is a stub.