Chennai Suburban Railway
commuter rail system in the city of Chennai, India
The Chennai Suburban Railway is a commuter rail system in the city of Chennai, Tamil Nadu, India, operated by the Southern Railways branch of Indian Railways. It is India's second largest suburban rail network in terms of route length and the third largest in terms of commuters. Around 1,000 services are operated daily between 4:00 a.m. and midnight. It is the longest suburban circular route in India covering of 235.5 km (146.3 mi).
Chennai has a complex railway network. It is the third busiest suburban rail system in India after Mumbai and Kolkata. It has separate tracks for local and express trains. The system extensively uses electrical multiple units (EMUs) operating on alternating current (AC) drawn from overhead wires through the catenary system. The total system spans around 1,211.81 kilometres (752.98 mi), of which only 509.71 kilometres (316.72 mi) have dedicated dual tracks for suburban EMUs; the rest share tracks with other trains and are called mainline EMUs (MEMUs).
This brief starts where responsible research should: with the source description of “Chennai Suburban Railway” as commuter rail system in the city of Chennai, India. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the places & architecture register because the source frames it as commuter rail system in the city of Chennai, India. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Maps, plans, fabric surveys and administrative records can establish how the site’s name, extent and function changed over time. The source revision retrieved here is dated Aug 22, 2026. The linked authority identifier is Q3520268. Authority coordinates are 13.083, 80.274. 3 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank.
Architectural summaries often privilege surviving fabric and can understate demolished phases, contested use or displaced communities. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Chennai Suburban Railway”, its source revision and the description used here.
- Expand the search: follow Chennai Suburban Railway primary sources, Chennai Suburban Railway archive and Chennai research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Chennai Suburban Railway”?
- Which authority defined the place, boundary or structure at the relevant date?
- What physical evidence or contemporary plan supports the description?
Search terms from this dossier
This entry incorporates text from “Chennai Suburban Railway” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.