Engineering Excellence: The Vande Bharat ‘Water Test’

New Delhi, November 15, 2025: A remarkable video showcasing the stability of the Vande Bharat Sleeper train prototype at extremely high speeds has achieved viral status across social media platforms. The clip, which was initially shared by officials and enthusiasts, features a simple yet compelling demonstration: several glasses filled with water are placed on a flat surface, such as the train’s dashboard, as the train accelerates. Despite the speed, the water is seen to remain perfectly steady, with not a drop being spilled. This visual proof of exceptional ride quality was instantly understood by the public, ensuring the video’s widespread circulation.

This “Water Test” was reportedly conducted during recent high-speed trials of the Vande Bharat Sleeper train, which are currently being carried out in sections like the Kota Division of the West Central Railway. The impressive feat was used to highlight the advanced suspension system and superior engineering of the indigenous train set. The stability that was demonstrated is considered a key factor in ensuring a comfortable and smooth journey for passengers, particularly during long-distance overnight travel, for which the sleeper version has been designed.

Speed Milestone: 180 km/h Achieved

The viral video was also intended to show the sheer velocity achieved by the new rake during its testing phase. As the glasses are observed remaining still, a mobile device beside them is seen displaying the speed of the train, which was successfully pushed to a maximum of 180 kilometers per hour ($180 \text{ km/h}$). This speed was achieved in multiple trials over specific, high-speed certified sections of the track, often under conditions simulating a fully loaded passenger train.

The successful completion of the high-speed trials, including technical assessments like the oscillation test and the Long Confirmatory Run (LCR), is considered a major milestone for Indian Railways. The trials are being conducted by the Research Designs and Standards Organisation (RDSO) and are aimed at scientifically evaluating the train’s stability, safety, and braking efficiency before it is cleared for regular passenger service. The Vande Bharat Sleeper train is built with a stainless steel body and incorporates advanced safety features, demonstrating the technical self-reliance that is emphasized under the “Make in India” initiative.

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Operational Speed: What Can Be Expected?

While the trial speed of $180 \text{ km/h}$ was successfully demonstrated, the maximum operational speed for regular service will be subject to the condition and certification of the track network. The Vande Bharat Sleeper train is slated to run commercially at speeds of up to 160 kilometers per hour ($160 \text{ km/h}$) on permissible stretches.

This slightly lower operational speed is mandated by existing track infrastructure constraints, as high-speed trains are only able to achieve their full potential on dedicated or specially upgraded lines that are free of grade crossings and sharp curves. Despite this, the introduction of the Vande Bharat Sleeper is expected to significantly reduce travel times compared to existing express trains, elevating the standards of long-distance rail travel across the nation. The public introduction of the new sleeper train is eagerly awaited by commuters who have been impressed by the viral display of engineering precision.