Kerala Silver Line (SilverLine)
Kerala Silver Line (SilverLine) was a proposed 530.6 km semi-high-speed rail corridor planned by K-Rail to link Thiruvananthapuram and Kasaragod. The project was formally cancelled by the Kerala Cabinet in May 2026; its route map, history and the corridor that replaced it are below.
SilverLine would have run the length of Kerala on standard-gauge track at up to 200 km/h, cutting a 10 to 12 hour journey to around four. Promoted by the Kerala Rail Development Corporation (K-Rail), a state-Railways joint venture, it spent nearly a decade fighting land-acquisition disputes, environmental objections and cost concerns, and repeatedly failed to secure Railway Board sanction from the Centre.
In January 2026 the Kerala Cabinet gave in-principle approval for a Regional Rapid Transit System (RRTS) covering the same Thiruvananthapuram-Kasaragod route as an alternative, since RRTS corridors are cleared under the Metro Rail Act rather than the Railways Act. With the Centre still withholding SilverLine approval, the state formally cancelled the project in May 2026.
Why it matters
SilverLine is the clearest case study in India of a large semi-high-speed project failing to survive central sanction, environmental review and public opposition at the state level, after being approved in principle for years. Its cancellation, and the pivot to an RRTS corridor on the same alignment, is now a template other states may watch when routing similar projects through the Metro Rail Act instead of the Railways Act.
What replaced it
The Kerala RRTS Corridor now covers the same Thiruvananthapuram-Kasaragod route under in-principle state approval. A separate, independent proposal, the Kerala High-Speed Rail (KHSR) plan championed by engineer E. Sreedharan, has also emerged as a third option for the corridor.
Explore more
- India Metro & Rail Project Status Dashboard
- Quick Snapshot of tracked projects
- Metro & rail Tender Tracker
- Delhi Metro
- Kerala RRTS Corridor (successor project)
- Kerala High-Speed Rail (KHSR) proposal
- Latest Thiruvananthapuram-Kasaragod project news
Official source: keralarail.com
Latest updates
Phases
| Phase | Lines | Stations | Length (km) | Status |
|---|---|---|---|---|
| SilverLine | Thiruvananthapuram-Kasaragod | 11 | 530.6 | Cancelled |
Frequently asked questions
What happened to Kerala Silver Line (SilverLine)?
It was formally cancelled by the Kerala Cabinet in May 2026 after the Centre repeatedly withheld Railway Board sanction. It never reached construction.
What replaced SilverLine?
A Regional Rapid Transit System (RRTS) corridor on the same Thiruvananthapuram-Kasaragod route, given in-principle state approval in January 2026. A separate proposal, Kerala High-Speed Rail (KHSR), has also emerged.
How long was SilverLine planned to be?
530.6 km with 11 stations, standard gauge, top speed 200 km/h.
Who proposed SilverLine?
K-Rail / Kerala Rail Development Corporation (KRDCL), a joint venture of the Kerala government and Indian Railways.
Journey Planner & Route Map
Awarded tenders & contracts
No awarded tenders or contracts recorded yet.
Ongoing tenders
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Upcoming tenders
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