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West-South Line
Overview
Status	Operational till Villupuram
Owner	Southern railway
Termini	Chennai Beach (Madras Beach) Villupuram
Stations	61
Service
Type	Suburban railway
System	Chennai Suburban Railway
Operator(s)	Southern Railway (India)
Depot(s)	Avadi
Technical
Line length	289.5 kilometres (179.9 mi) (69 km Suburban, 140 km MEMU and 81 km u/c)
Number of tracks	4 till Arakkonam, 2 till Katpadi,1 till Villupuram
Track gauge	Broad gauge
Electrification	25
Operating speed	90 km/h (maximum service speed)
Route map Legend Chennai Beach — Villupuram 290 Viluppuram 281 Venkatesapuram 277 Teli 273 Mambalapattu 269 Ayandur 264 Mugaiyur 256 Tirukoilur 247 Adhichchanur 242 Andampallam 239 Tandarai 231 Velanandal 222 Tiruvannamalai 213 Turijapuram 205 Agaram Sibbandi 191 Polur 175 Arani Road 169 Sedarampattu 160 Kannamangalam ↑ closed for rebuilding 140 Vellore Cantonment 151 Kaniyambadi 138 Vellore to Jolarpettai Junction to Pakala 129 Katpadi 124 Seevur 118 Thiruvalam 112 Mukundarayapuram 105 Walajah Road 98 Marudhalam 94 Thalangai 90 Sholinghur 86 Mahendravady 80 Anavardhikhanpettai 76 Chitteri Melpakam West North Line 69 Arakkonam Junction Puliyamangalam Mosur 58 Thiruvalangadu 54 Manavur Kosasthalaiyar River Senji Panambakkam Kadambattur 45 Egattur 42 Tiruvallur Puttlur 36 Sevvapet Road 32 Veppampattu 29 Thiruninravur 26 Nemilichery 29 Pattabiram Military Siding Engineering Depot 28 Pattabiram Military Siding 25 Pattabiram 24 Hindu College 21 Avadi Red Line 18 Annanur 17 Thirumullaivoyal 15 Ambattur Red Line 14 Pattaravakkam 12 Korattur ICF Furnishing Factory 13 Anna Nagar West 12 Padi 9 Villivakkam Red Line 8 Perambur Loco Works 6 Perambur Carriage Works 5 Perambur Purple Line 4 Vyasarpadi Jeeva North Line 2 Basin Bridge 0 Chennai Central MMC 3 Washermanpet 1 Royapuram 0 Chennai Beach South West Line South Line

The South West Frontier line of Chennai Suburban Railway is the longest line running South-west from Chennai (Madras) City covering a distance of almost 289 km. Suburban services terminate at Arakkonam and MEMU services currently run till Vellore Cantonment which will be extended up to Villupuram upon completion of Vellore Cantonment and Villupuram section.

• This section has 2 dedicated lines for suburban train operations apart from 2 main line for mixed traffic.
• EMUs are operated along 3rd and 4th main lines during peak hours.
• 5th and 6th rail lines are planned.
• 9-car and 12-car EMU are operated in this sector.

• This section also has 2 dedicated lines for suburban train operations apart from 2 main line for mixed traffic.

• 9-car, 12-car EMU & MEMU are operated in this sector.

• 8-car MEMU are operated in this sector.

• MEMU service operate between Chennai Beach and Vellore Cantonment via Katpadi.

• This section has been gauge converted and is being electrified along with passenger services are operating since June. Currently five passenger trains ply over this section