Crowd Management at Stadiums: How 60,000 People Get In and Out Safely

How is a stadium's safe capacity calculated?

In the UK, the reference book is the Guide to Safety at Sports Grounds, known everywhere as the Green Guide. It is published by the Sports Grounds Safety Authority (SGSA) and used by stadium designers well beyond Britain.

Its central idea is simple and slightly counter-intuitive. A stand does not have one capacity. It has four, and the safe figure is whichever is lowest:

• Holding capacity: how many people fit safely in the space itself.
• Entry capacity: how many can get in through the turnstiles in a reasonable time.
• Exit capacity: how many can leave comfortably at the end.
• Emergency evacuation capacity: how many can get to a place of safety quickly if something goes wrong.

A beautiful new stand with too few turnstiles is, on paper, a smaller stand. That is a powerful incentive to design the whole journey, not just the seats.

How many people can a turnstile let in per hour?

The Green Guide sets an upper limit of 660 people per entry point per hour, roughly one person every five and a half seconds. If a ground has measured slower rates at a particular gate, it is expected to use the slower figure instead.

That number explains a lot about stadium architecture. Suppose you want 60,000 people inside within about an hour of the gates opening. Divide by 660 and you need around 90 entry points working flat out, and more in practice, because people don't arrive evenly. Most turn up in the last 45 minutes, so venues work hard to pull them in earlier with pre-match entertainment, food and early gate openings.

Bag searches, ticket problems and security checks all slow each lane down, which is why big events now ask you to have your phone ticket ready and to leave large bags at home. Every few seconds saved per person, multiplied by tens of thousands, is a shorter queue outside.

How long should it take to empty a stadium?

Leaving is a different puzzle. Everyone wants to go at the same moment.

The SGSA's worked examples use a normal exit time of up to eight minutes: the time it should take spectators to get from their seats into the exit routes. They also use flow rates per metre of route width, up to about 82 people per metre per minute on level ground and 66 on stairs and steps, because people slow down when they look at their feet.

Run the numbers and you can see why stairways and gangways are so generous in a modern stand: a single metre of stair can only pass a few hundred people in eight minutes.

Emergency evacuation is planned separately. The time allowed ranges from two and a half minutes for areas at high risk of fire up to eight minutes for well-built, low-risk stands.

How crowded is too crowded?

Crowd scientists measure standing crowds in people per square metre. At around two per square metre there is room to move freely. The Green Guide's recommended figure for standing viewing areas is about 4.7, and crowd researchers generally treat five per square metre as the upper limit for a standing crowd.

Beyond that, a crowd starts to behave less like individuals and more like a liquid. People can no longer choose where to step, and pressure can pass through a packed mass from one person to the next. That is why safety teams watch density, not just headcount, and why they react early when a section looks too tight.

Who runs crowd management at stadiums on the day?

All this maths would be useless without the people who run it on the day.

Every large ground has a safety officer and a control room, often high in the stand with CCTV screens and radio links to every gate. The Green Guide expects the turnstile counting system to report into that room in real time, so staff can see, section by section, how full the ground is getting.

On the ground, stewards are the eyes and ears. They spot a jam at the bottom of a stairway, keep gangways clear, help someone who feels unwell and, crucially, pass information back. A good steward's radio call of "it's getting tight at gate C" can trigger a decision in the control room within seconds, from opening another gate to holding people back at the outer cordon.

What happens after you leave the stadium?

A crowd doesn't stop being a crowd when it leaves the building. The walk to the station is part of the plan too.

When the new Wembley was being built, Transport for London rebuilt Wembley Park station so its main ticket hall could handle about 37,500 people an hour, up from 22,000. Even so, after big events rail operators run queuing systems outside the stations. Staff sort people by destination and only let enough people onto the platform to fill the next train, so the platforms never become dangerously packed. Chiltern Railways tells fans to expect up to 30 minutes of queuing.

It is slow, and it is meant to be. A calm queue on the street is much safer than a crush on a platform edge.

What have stadium disasters taught us?

Much of today's guidance exists because things went terribly wrong.

On 15 April 1989, 97 Liverpool supporters died after a crush on the Leppings Lane terrace at Hillsborough in Sheffield. The Hillsborough Independent Panel, which reviewed the evidence in 2012, found that the fans were not the cause of the disaster, and endorsed the earlier finding that the main cause was a failure of police control. Lord Justice Taylor's report into the disaster made 76 recommendations; among them, that major grounds should become all-seater, which became a requirement for the top two divisions in England from 1994. Its influence on stadium design and safety management is still felt everywhere.

The lessons keep coming. At the Euro 2020 final at Wembley in July 2021, an independent review commissioned by the FA found that around 2,000 people without tickets got into the stadium, with 17 mass breaches of disabled access gates and fire doors, and concluded that the day came close to costing lives.

At the Astroworld festival in Houston in November 2021, ten people died in a crowd crush. A Texas task force afterwards called for consistent permitting and, above all, a single on-site command structure with the clear authority to pause or stop a show.

And in October 2022, at Kanjuruhan Stadium in Malang, Indonesia, police fired tear gas into packed stands after a match. More than 130 people died as spectators rushed for exits, several of which were locked. Investigators named the tear gas as the main cause and noted that safety rules required gates to be open before the end of the match.

The common thread is not mysterious. Too many people in one place, exits that weren't usable, and nobody with the information and authority to act in time.

What technology do venues use for crowd safety today?

Today's venues have tools earlier generations could only dream of:

• Digital tickets that tell the venue exactly who has arrived, and at which gate.
• Live counting and CCTV that let the control room see density building before stewards on the ground can feel it.
• Licensed standing: since January 2022 the SGSA has licensed some English clubs to offer standing in specially designed rail-seat areas, and from the 2022–23 season all Premier League and Championship grounds could apply.
• Counter-terrorism duties: the UK's Terrorism (Protection of Premises) Act 2025, known as Martyn's Law after a victim of the 2017 Manchester Arena attack, will require venues expecting 800 or more people to have enhanced security plans. It is expected to come into force in 2027.

Technology helps, but the guidance keeps returning to the same point: good design, good information and well-trained people who know they are allowed to make the call.

In Big Night Tycoon, a venue management game, keeping the gates flowing is one of the jobs your staff handle quietly in the background.

Frequently asked questions

What is the Green Guide?

The Guide to Safety at Sports Grounds, published by the UK's Sports Grounds Safety Authority. It sets out how to calculate a safe capacity and how to design and manage entry, exits, stewarding and emergency plans, and it is used as a reference far beyond the UK.

Why do I have to queue for the train after a big match?

Because a packed street is much safer than a packed platform. Rail staff hold crowds outside and release only as many people as the next train can carry, so the platform never overfills.

Why are some stadium exits opened before the final whistle?

So the routes out are ready before thousands of people stand up at once. Gates that are still locked when a crowd needs to leave have been a factor in several disasters, including Kanjuruhan in 2022.