| Tamil Nadu Superfast Express | |
| Type: | Superfast Express |
| Operator: | Southern Railways |
| Start: | (MAS) |
| Stops: | 10 |
| End: | (NDLS) |
| Distance: | 2182km (1,356miles) |
| Journeytime: | 32 hours (Approx.) |
| Frequency: | Daily |
| Class: | AC 1st Class, AC 2 Tier, AC 3 Tier, AC 3 Tier Economy, Sleeper Class, General Unreserved |
| Seating: | Yes |
| Sleeping: | Yes |
| Catering: | Yes |
| Observation: | Large windows |
| Otherfacilities: | Below the seats |
| Stock: | LHB coach |
| Gauge: | Broad Gauge |
| Trainnumber: | 12621 / 12622 |
| Speed: | 70km/h average including halts. |
| Map: | Tamil Nadu Express route map |
The 12621 / 12622 Tamil Nadu Express is a daily Superfast train of the Indian Railways. It is the fastest non AC train between New Delhi and Chennai covering the distance in 32 hours.
It only stops at Agra, Gwalior, Jhansi, Bhopal, Itarsi, Nagpur, Balharshah, Warangal, Khammam (since 09.10.2023) and Vijayawada.
It has the non stop continuous run between Vijayawada and Chennai Central of 431 km.
It is hauled by a WAP-7 from Royapuram shed end to end since the whole route is electrified.
Tamil Nadu Express has traditionally been accident-prone, with many accidents occurring due to its speed. The top speed of the train was reduced after series of derailments and after major derailment of 14 coaches on 31 August 1981 at Asifabad Road Station in Telangana, in which 15 persons were killed and 39 injured.[1] The following table enlists the accidents that happened on Tamil Nadu Express.
| Year | Location | Cause of Accident | Casualties | |
|---|---|---|---|---|
| 1977 | Vijayawada | Derailment | none | |
| 1978 | Nagpur-Itarsi section | Derailment | none | |
| 1981 | Asifabad Road Station | Derailment | 15 killed 39 injured | |
| 1983 | Derailment | none | ||
| 1984 | Vijayawada | Derailment | none | |
| 1984 | Delhi | Fire in one of the coaches | Two coaches partially damaged | |
| 1986 | Agra-Gwalior Section | Fire in one of the first class coaches | 3 injured | |
| 1987 | Amla-Nagpur | Derailment of 13 coaches | 2 killed 30 injured | |
| 1990 | Mathura | Collision with an empty train | none | |
| 2012 | Nellore | 32 killed 27 injured |