Vande Bharat (trainset)
The Vande Bharat trainset, formerly known as Train 18, is an Indian Electric Multiple Unit trainset designed and developed by Indian Railways at its Integral Coach Factory in Chennai. The train achieved a maximum speed of  during its trial runs but the operational speed of the train is restricted to  due to tracks' inability to support such speeds.

History

Dawn of EMUs 

The first electric multiple unit (EMU) technology in India was introduced in Mumbai as a suburban railway service on 3 February 1925. With an increase in demand post-independence, India began to import EMUs from Europe and Japan, before it could manufacture indigenously. In the 1960s, BHEL, an Indian public sector giant started manufacturing electrical equipment for indigenous EMUs, which then started entering service in the 1960s. During the same time, Integral Coach Factory of Chennai, a government-owned manufacturer of rail coaches started developing EMUs indigenously. This is seen as a major leap in the Indian railway industry as they became the earliest precursors to Vande Bharat technology.

By the 1990s, Indian Railways had a large number of EMU trainsets within the cities of Chennai, Delhi, Kolkata and Mumbai as a suburban railway for very short distances. For regular long-distance travel, India relied on locomotives. The inefficiency of these locomotive-hauled trains was soon felt while the developed world already had well-built EMU high-speed technology by the 1990s. EMUs for longer distances were conceived on the long-distance main lines, which led to the development of Mainline Electric Multiple Units (MEMU). MEMUs had the advantages of faster acceleration and deceleration, the presence of driver cabins at both ends (thus eliminating the need for switching the locomotive at terminals), being energy efficient with regenerative braking and generally being an efficient system. This encouraged Indian Railways to develop MEMUs for distances beyond the suburban belt. A decade later, India had several MEMUs operating across the country's electrified routes as a short-distance inter-city service. India still had to rely on locomotives for long-distance travel.

The need for speed and comfort 
For most of Indian Railways' history, speed and comfort were not of primary concern as safety was of utmost importance. While India saw 325 accidents in 2003–04, this number was down to 106 in 2015–16. Indian Railways had already introduced services like Gatimaan and Tejas that offered comfort with their modern coaches. The replacement of old ICF coaches by the modern and safer LHB coaches also helped significantly. As the next step, Indian Railways at ICF headed by general manager Sudhanshu Mani, started designing a new EMU trainset that was set to be developed at half the imported cost.  Since these trains were planned to be ready by 2018, they were named 'Train-2018' and later 'Train 18'. They were designed to be fully air-conditioned and equipped with automatic doors, onboard Wi-Fi, and infotainment and many other modern facilities. With these modern facilities along with modern technical features, the train was one of its kind in the country and marked a leap into the future. Train 18 was designed with the LHB coach as a base. With sixteen chair cars and a 160 km/h speed, the technology was set to replace Shatabdi services.

First generation set and its issues 

The manufacturing of Train 18 was coincidentally completed 18 months after initiation. It was built at a cost of  and had 80% indigenous components. During its trial runs, Train 18 became the fastest EMU train in India after attaining a speed of 180 km/h, 4 km/h shy of India's overall best record of 184 km/h achieved by a WAP-5 Class locomotive back in 1997. Train 18 was renamed as 'Vande Bharat Express' as an acknowledgement for the fact that it was completely built in India by Indian engineers.

On 15 February 2019, the first Vande Bharat Express between New Delhi and Varanasi was flagged off at the New Delhi railway station by Prime Minister Narendra Modi. The train ran from New Delhi to Varanasi via Kanpur and Prayagraj, connecting Uttar Pradesh's Varanasi to the capital city and reduced the existing travel time along the route by 15%. The 8-hour journey from New Delhi to Varanasi station covered a total distance of  between the two cities. However, while returning from Varanasi, the train broke down due to a cattle runover. According to reports, four cars of the train experienced an electrical outage and brakes were reported to be jammed as the train was halted for over an hour at Tundla Junction railway station before resumption.

The fleet of Vande Bharat trainsets was set to expand in numbers but Indian Railways had stopped the production of new sets owing to internal issues. After the intervention of the Railway Minister, Railways decided to resume tenders for the production of new sets. However, they wished to provide more time so that the manufacturers could come up with the cheapest bid and because the train would require a major upgrade from scratch, as per one railway official.

Second generation trainsets 

In January 2021, Indian Railways awarded a  contract to Hyderabad-based Medha Servo Drives to manufacture 44 second generation Vande Bharat trainsets, in accordance with the Atmanirbhar Bharat initiative that required 75% of the components to be locally sourced. In March 2022, Indian Railways awarded contracts to seven companies to manufacture 58 additional trainsets at a total cost of . The seven companies were Medha Servo Drives, Alstom, Siemens, Bharat Heavy Electricals Limited (BHEL), Titagarh Wagons, Saini Electricals and CGL. During manufacturing, the supply of wheels from Ukraine was disrupted due to the Russian invasion of Ukraine, this delayed production. Indian Railways later sought Steel Authority of India (SAIL) and Rashtriya Ispat Nigam (RINL) to manufacture the wheels. On 9 September 2022, trial runs for the second version of Vande Bharat Express were completed, during which it broke the acceleration record as it accelerated from  in just 52 seconds, making it two seconds faster than Japanese bullet trains in acceleration. It entered service on 30 September 2022.

New colour variant 

In July 2023, Indian Railways announced a new saffron and grey livery for Vande Bharat trains inspired by the Indian tricolour. The Union Minister of Railways, Ashwini Vaishnaw, said that 25 improvements have been incorporated into the trains, including anti-climbing devices. These anti-climbing devices will also be added to trains other than Vande Bharat.

Engineering 
As part of the "Make in India" initiative, the Integral Coach Factory (ICF) created and produced the Vande Bharat Express. There are two generations of the train with design upgrades and addition of new features with subsequent generations.

First generation (Vande Bharat 1.0) 

The exterior of the first version of Vande Bharat Express had an aerodynamic design that helped to reduce air resistance at high speeds. It had a driver's cabin at each end, that enables immediate switch in train's direction, unlike a locomotive-hauled train. The 16-car trainset weighs 430 tonnes and has a seating capacity of 1,128 passengers. Two of the centre compartments are first-class compartments that seat 52 each, with the rest being chair car compartments seating 78 each. The chassis of a coach is 23 meters long, and the frame of the train is made entirely of stainless steel. Alternate coaches are motorized to ensure an even distribution of power and quicker acceleration and deceleration. The cars are interconnected and fully sealed to allow better mobility between coaches and reduce noise. The train features a GPS-based passenger information system, bio-vacuum toilets, and rotational seats that can be aligned in the direction of travel in the executive class, and employs a regenerative braking system.

This version reached a maximum speed of . It could accelerate to a speed of  in 54.6 seconds and reach its maximum speed in 145 seconds. Trains were equipped with  television screens that serve as the passenger information and entertainment system. The train's underframe electrical equipment can withstand floods up to . Among the imported components were the wheels, seats, doors, braking system, transformers, and electronic parts such as processing chips.

Second generation (Vande Bharat 2.0) 

The second generation trains were built in 2022 and they could accelerate to a speed of  in a record time of 52 seconds, compared to the 54 seconds taken by the older version. The train could reach a speed of  in 140 seconds, 5 seconds faster than the first generation of the train. It is lighter, weighing 392 tonnes compared to 430 tonnes for the previous version, and is equipped with larger 32-inch television screens and Wi-Fi on board. The air conditioning system on the VB2 utilizes 15% less energy than the system on the first Vande Bharat trainset. VB2 also has automatic plug doors, sliding doors that don't need to be touched, emergency communication units, accessible toilets, a bigger driver's cabin, and seats in all coaches that can be leaned back. To address the seat reclining issues of the previous version, the new chairs were equipped with a push-back arrangement for smooth reclining.

This version is additionally equipped for safety and protection with Kavach signalling technology. The train offers enhanced amenities, security, and surveillance systems, as well as features suited for emergencies. The seats are made up of Fibre Reinforced Polymer (FRP) and were made by Tata Steel's Composites division. The new rolling stock features four emergency windows, disaster lights in all coaches in the event of lighting system failure, fire survival cables within door circuits, ventilation for three hours in the event that the air conditioner loses power, and four additional emergency push buttons per coach. The new coaches are also equipped with a centralized Coach Monitoring System for all types of electricity and climate control, among other new additions. An official added that the new coaches would be provided with a bacteria-free air conditioning system and higher flood protection for electrical equipment to ensure reliability during monsoons up to .

Modified rakes 
Several rakes have been modified to accommodate specific routes. The Mumbai CSMT - Sainagar Shirdi Vande Bharat Express and Mumbai CSMT - Solapur Vande Bharat Express are modified Vande Bharat trains that have additional parking brakes for stopping the train on a slope because they traverse ghat sections. This feature is not available in other Vande Bharat trains.

The Delhi Cantt.-Ajmer Vande Bharat express is a modified Vande Bharat train that has high-rise pantographs as the New Delhi-Jaipur route has a higher catenary for accommodating double-stacked containers and Double Decker Express trains. It is the world's first semi-high-speed passenger train with high-rise pantographs.

Rake formation 
The rake formations of all the operational versions of the train are given below:

Abbreviations

 DTC – Driving Trailer Coach
 NDTC – Non-Driving Trailer Coach
 MC – Motor Coach
 MC2 – Motor Coach with electrical change-over switch
 MC3 – 180° rotated MC2
 TC – Trailer Coach having Pantograph
 EC – Executive Chair Car (2x2 seats)
 CC – Economy Chair Car (3x2 seats)

Future 
The following EMU trainsets which are influenced by the Vande Bharat are currently in the preliminary stages of design and will be introduced in the near future.

Sleeper trainsets (Vande Bharat 3.0) 

The sleeper EMU trainsets are being built with sleeper coaches for long-distance travel. They will have three classes: 1A, 2A and 3A. The train is expected to have a maximum speed of  and a design life of 35 years. It is expected to be lighter, energy efficient as well as have better passenger amenities than the Vande Bharat. Half of the trainsets will have coaches made of steel, while the other half will have coaches made of aluminium with articulated bogies.

Indian Railways invited bids to design and manufacture 200 trainsets in April 2022. The agency estimated that it would cost . The estimate includes the cost of upgrading infrastructure at either the Marathwada Rail Coach Factory in Latur or ICF where the train is planned to be manufactured. A further  will be paid to the winning bidders over a 35-year period for maintenance. The bidders would be required to build the first prototype of this trainset within 24 months of being awarded the contract.

Trainsets with tilting technology (Vande Bharat 4.0) 
These EMU trainsets are planned to have a maximum speed of more than . The coaches will be made of a lightweight aluminium alloy and are expected to feature improved passenger amenities such as a 3-pin socket and USB power socket for every passenger, zero discharge toilet systems, and facilities to accommodate passengers travelling in wheelchairs. The trains will also have a cattle guard that can absorb collisions with animals up to  in weight and keep animals from being dragged under the train in the event of a collision.

These trains are expected to be equipped with tilting technology, marking the first commercial deployment of the technology in India.

Export 
After the train's inauguration, Indian Railways reportedly received queries of interest from some countries in Southeast Asia and South America. A board member of the Indian Railways stated that the train could be modified according to customer needs. A railways official stated in November 2022 that the Ministry of Railways were preparing a roadmap to begin exports of Vande Bharat trainsets by 2026. Exports would only begin after 475 trainsets are built for domestic use.

Test track 

Indian Railways is constructing a  long dedicated standard gauge track between Gudha and Thathana Mithri in the Jodhpur Division to conduct trial runs at speeds of up to . The track is expected to be completed by January 2024.

See also 
 RapidX (trainset)
 Train 20
 E5 Series Shinkansen

References

External links 

Higher-speed rail
25 kV AC multiple units
Express trains in India
Electric multiple units of India