Disaster management guidelines stress controlled entry, separate exit routes, real-time monitoring and trained personnel to prevent crowd crushes 
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19 killed in Kolkata stampede: Why do crowd crushes happen, and how can they be avoided?

Nineteen deaths at Durga Puja pandal raise questions over overcrowding, narrow exits and inadequate arrangements for managing sudden surges

The stampede at Kolkata's Chorbagan Sarbojanin Durga Puja pandal, which claimed 19 lives and left around 25 people injured on Saturday, has renewed concerns over crowd management at religious gatherings, with experts and disaster management guidelines warning that overcrowding, restricted movement and inadequate safety arrangements can turn celebrations into deadly emergencies.

The tragedy unfolded amid heavy rainfall and a large gathering of devotees in north Kolkata. Preliminary accounts suggest that people waiting outside the pandal rushed towards the structure when it began raining, while an announcement over the public-address system may have intensified the confusion.

As the crowd surged, several visitors fell and others continued moving forward, resulting in a deadly crush. Investigators are examining the circumstances surrounding the incident and whether shortcomings in crowd management contributed to the fatalities.

๐—ช๐—ต๐˜† ๐—ฐ๐—ฟ๐—ผ๐˜„๐—ฑ๐˜€ ๐˜๐˜‚๐—ฟ๐—ป ๐—ฑ๐—ฒ๐—ฎ๐—ฑ๐—น๐˜†

Although commonly described as stampedes, such incidents often involve crowd crushes in which people become so tightly packed that they lose control over their movements.

According to the National Disaster Management Authority's (NDMA) 2014 guidelines, crowd disasters frequently result from a combination of factors, including excessive density, narrow entry and exit points, weak barricades, inadequate lighting and poor coordination among organisers and security personnel.

Problems arise when the number of visitors exceeds the capacity of a venue or when people enter a restricted area faster than others can leave.

In such situations, even a minor disturbance, such as sudden rainfall, a person falling or an unexpected announcement, can trigger dangerous movement.

The NDMA identifies compressive asphyxia as a common cause of death in crowd disasters. This occurs when pressure from surrounding bodies prevents victims from expanding their chests sufficiently to breathe, even if they are not trampled.

๐—ฅ๐—ฎ๐—ถ๐—ป, ๐—ฐ๐—ผ๐—ป๐—ด๐—ฒ๐˜€๐˜๐—ถ๐—ผ๐—ป ๐—ฎ๐—บ๐—ผ๐—ป๐—ด ๐—ฝ๐—ผ๐˜€๐˜€๐—ถ๐—ฏ๐—น๐—ฒ ๐˜๐—ฟ๐—ถ๐—ด๐—ด๐—ฒ๐—ฟ๐˜€

Preliminary accounts of the Kolkata incident suggest that several risk factors may have converged at the Chorbagan pandal.

A large number of devotees had gathered at the venue when rain prompted people waiting outside to move towards the covered structure.

The resulting pressure on entry and exit routes reportedly caused some visitors to lose their balance, while others behind them continued pushing forward.

Authorities have also indicated that an announcement made by organisers may have contributed to the sudden movement of people.

However, the precise sequence of events and the responsibility for any lapses remain under investigation.

The tragedy has highlighted the importance of monitoring crowd density at individual entry points, corridors and enclosed spaces rather than relying solely on estimates of the total number of visitors.

๐—ฃ๐—ฎ๐˜€๐˜ ๐˜๐—ฟ๐—ฎ๐—ด๐—ฒ๐—ฑ๐—ถ๐—ฒ๐˜€ ๐—ผ๐—ณ๐—ณ๐—ฒ๐—ฟ ๐˜„๐—ฎ๐—ฟ๐—ป๐—ถ๐—ป๐—ด๐˜€

India has witnessed several major crowd disasters at religious gatherings, with investigations repeatedly identifying similar shortcomings.

In August 2003, a stampede during the Nashik Kumbh claimed 29 lives. A magisterial inquiry identified pressure at barricades, sudden movement in the opposite direction and the unexpected entry of pilgrims from multiple points among the contributing factors.

In January 2005, a stampede during the Kalubai Yatra at Mandhardevi in Maharashtra killed 293 people.

An inquiry into that disaster identified inaccurate estimates of attendance, inadequate space, a narrow and slippery approach road, insufficient security arrangements and poor coordination among agencies.

These incidents demonstrate how structural weaknesses and failures in crowd regulation can combine with sudden disturbances to produce catastrophic consequences.

๐—ก๐——๐— ๐—” ๐—ฐ๐—ฎ๐—น๐—น๐˜€ ๐—ณ๐—ผ๐—ฟ ๐—ฐ๐—ผ๐—ป๐˜๐—ฟ๐—ผ๐—น๐—น๐—ฒ๐—ฑ ๐—ฒ๐—ป๐˜๐—ฟ๐˜†

The NDMA's guidelines emphasise that effective crowd management must begin well before visitors arrive at a venue.

Organisers and authorities are advised to estimate expected attendance, identify peak visiting hours and assess the capacity of different sections of a venue, particularly narrow passages and entrances.

Where demand exceeds safe capacity, entry should be restricted or staggered to prevent overcrowding.

Measures include designated holding areas, separate entry and exit routes, one-way pedestrian movement, adequate barricading and continuous monitoring of crowd density.

At religious destinations such as Vaishno Devi and Sabarimala, registration and regulated access have been used to manage the movement of pilgrims.

While such systems may be difficult to implement at urban festivals like Durga Puja, authorities can temporarily suspend entry when a venue reaches its safe capacity.

๐—–๐—น๐—ฒ๐—ฎ๐—ฟ ๐—ฎ๐—ป๐—ป๐—ผ๐˜‚๐—ป๐—ฐ๐—ฒ๐—บ๐—ฒ๐—ป๐˜๐˜€ ๐—ฐ๐—ฟ๐˜‚๐—ฐ๐—ถ๐—ฎ๐—น

The NDMA also stresses the importance of communication in preventing dangerous crowd movements.

Announcements intended to regulate visitors can have unintended consequences if they cause large numbers of people to move simultaneously without adequate space or clearly designated routes.

Poorly coordinated security responses can also worsen congestion, particularly when people moving in opposite directions converge in narrow passages.

The guidelines recommend clear public-address systems, visible signs, adequate lighting, trained volunteers, emergency medical facilities and effective coordination between organisers, police and disaster response agencies.

Following the Kolkata tragedy, authorities temporarily restricted entry at several prominent Durga Puja pandals as a precautionary measure.

The incident underscores a central principle of crowd safety: preventing overcrowding is more effective than attempting to control a dangerous surge after it has begun.