Due to remodelling work at Tambaram yard in Chennai, the Southern Railway has announced cancellations and diversions of several train services till August 17th. The Tirunelveli - Chennai Egmore Vande Bharat Express (20666) is fully cancelled on August 6th. Several trains originating from Chennai Egmore will instead depart from Chengalpattu, including...
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the Chennai Egmore - Tirunelveli Superfast Express (12631), Chennai Egmore - Sengottai Pothigai Superfast Express (12661), and Chennai Egmore - Kanniyakumari Express (12633). The Sengottai - Chennai Egmore Pothigai Superfast Express (12662), Tirunelveli - Chennai Egmore Superfast Express (12632), and Kanniyakumari - Chennai Egmore Express (12634) will be short terminated at Chengalpattu. The Kanniyakumari - Hazrat Nizamuddin Thirukkural Express (12641) will be diverted via Villupuram and have an additional stop at Perambur on August 14th. The Howrah - Tiruchy Superfast Express (12663) will be diverted via Perambur, skipping stops at Chennai Egmore, Tambaram, Chengalpattu and Melmaruvathur on August 15th. The Chennai Egmore - Karaikal Express (16175) is rescheduled to depart at 10.25 pm from August 7th to 17th.

The Southern Railway has announced changes to train services due to track improvement work at Tambaram station in Chennai. The Vande Bharat Express (20666) from Tirunelveli to Chennai Egmore on August 18th is canceled. On August 16th and 17th, the Nellai Express (12631) from Chennai Egmore to Tirunelveli, the Pothigai Express...
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(12661) from Chennai Egmore to Sengottai, and the Kanniyakumari Express (12633) from Chennai Egmore to Kanniyakumari will depart from Chengalpattu instead of Chennai Egmore. On August 15th and 16th, the Nellai Express (12632) from Tirunelveli to Chennai Egmore, the Pothigai Express (12662) from Sengottai to Chennai Egmore, and the Kanniyakumari Express (12634) from Kanniyakumari to Chennai Egmore will only run until Chengalpattu. Additionally, the Nizamuddin Express (12641) departing from Kanniyakumari on August 14th will be diverted via Viluppuram, Vellore, Katpadi, Arakkonam, and Perambur en route to Delhi.

Due to Tambaram remodelling works from August 7th to 17th, several express trains are experiencing changes in their schedules. Some trains are fully cancelled, while others are partially cancelled, diverted, or short-terminated. For example, the Train No 20666 Tirunelveli – Chennai Egmore Vande Bharat Express on August 16th is...
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fully cancelled. Train No 12693 Chennai Egmore – Tuticorin Pearl City Express on August 15th and 17th will originate from Chennai Egmore at 7:30 pm. Train No 12637 Chennai Egmore – Madurai Pandian Superfast Express on August 15th will originate from Chennai Egmore at 9:40 pm. Train No 16865 Chennai Egmore -Thanjavur Uzhavan Express on August 15th will originate from Chennai Egmore at 10:15 pm. Train No 12631 Chennai Egmore – Tirunelveli Superfast Express on August 16th and 17th will originate from Chengalpattu at 9:10 pm. Train No 12661 Chennai Egmore – Sengottai Pothigai Superfast Express on August 16th and 17th will originate from Chengalpattu at 9:40 pm. Train No 12633 Chennai Egmore – Kanniyakumari Express on August 16th and 17th will originate from Chengalpattu at 6:20 pm. Train No 12662 Sengottai – Chennai Egmore Pothigai Superfast Express, Train No 12632 Tirunelveli –Chennai Egmore Superfast Express on August 15th and 16th, Train No 12634 Kanniyakumari – Chennai Egmore Express on August 15th will be short terminated at Chengalpattu. Train No 12641 Kanniyakumari – Hazrat Nizamuddin Thirukkural Express on August 14th will be diverted to run via Villupuram, Vellore, Katpadi, Arakkonam, and Perambur. Additional stoppage will be provided at Perambur at 10:55/11:00 am. Train No 12663 Howrah –Tiruchchirappalli Superfast Express on August 15th will be diverted to run via Perambur, Arakkonam, Katpadi, Tiruvannamalai, and Villupuram, skipping stoppages at Chennai Egmore, Tambaram, Chengalpattu, and Melmaruvathur. Additional stoppage will be provided at Perambur 8:00/8:05 pm. Train No 16175 Chennai Egmore – Karaikal Express from August 7th to 17th is rescheduled to leave Chennai Egmore at 10:25 pm. Except for the mentioned dates, these train services will run as per the earlier notification.

South Western Railway has announced permanent changes to several express trains, adding extra coaches starting from late May 2024. These include: 1. Train 16525/16526 (KSR Bengaluru - Kanniyakumari) will gain one AC Three Economy Coach starting May 26th from Bengaluru and May 29th from Kanniyakumari. 2. Train 12633/12634 (Kanniyakumari - Chennai Egmore)...
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will gain one AC Three Economy Coach starting May 27th from Kanniyakumari and May 28th from Chennai Egmore. 3. Train 16585/16586 (SMVT Bengaluru - Murdeswar) will gain one AC Two Tier Coach and two Sleeper Class Coaches starting May 28th from Bengaluru and May 29th from Murudeshwar. 4. Train 16511/16512 (KSR Bengaluru - Kannur) will gain one AC Three Tier Coach and one Sleeper Class Coach starting May 28th from Bengaluru and May 29th from Kannur. 5. Train 22677/22678 (Yesvantpur - Kochuveli) will gain one AC Two Tier Coach starting May 30th from Yesvantpur and May 31st from Kochuveli. Each train's updated coach composition is detailed in the announcement.