How High-Speed Trains Run Together to Carry More Passengers

Have you ever seen two high-speed trains connected head-to-tail, running as one on the rails? This isn‘t just a random occurrence — it’s a standard and clever practice called ‘train coupling (or as we call it in China, 重联 chóng lián). And if you’ve ever wondered why they do it, or how it works… well, you’re in the right place.                                 

Let’s start with the “why.”

Doubling the ride of the High-Speed Trains, not the drivers

Imagine a busy holiday weekend — maybe Spring Festival or National Day — when everyone’s trying to get home or go on vacation. Trains fill up fast.

So instead of building entirely new trains or hiring more drivers, railways use a clever trick: they take two 8-car trainsets and link them into one 16-car super-train. That’s double the passengers, with just one person at the controls.

It’s like turning two buses into one long articulated bus, except here, everything stays incredibly smooth and high-tech. If you watch the video carefully, you’ll see that both trains are actually double-heading trains.

The gentle “kiss” that connects them

So how do they join two giant trains without a jolt?

It happens off-stage, usually inside a maintenance depot. Picture this: the train noses open up, and with technicians guiding the move, the driver slowly, slowly edges one train toward the other… at just 2 km/h, barely faster than a stroll.

That gentle touch is called the “train kiss” — a perfectly aligned coupling that locks them together, not just physically, but electronically too. Once linked, the second train mirrors everything the lead train does: speeding up, slowing down, stopping. All automatically, all in sync.

A quick tip if you’re riding High-Speed Trains

Here’s something handy to know if you find yourself on a coupled train:

You can’t walk between Car 8 and Car 9. They’re actually two separate trainsets inside, so the doors don’t connect.

No worries, just check your ticket for your car number before you board. If you do end up in the wrong section, the crew can help you switch at the next stop (never try to force the doors open while moving — safety first!).

Manufacturer of High-Speed Trains Components

You might not think about it when you’re sitting comfortably in your seat, watching the scenery fly by…

But behind that smooth “kiss” and seamless ride is a world of precision engineering. From the couplers that join the trains to the control systems that make them communicate, countless components have to work perfectly together.

And yes, some of those critical parts come from us， Luoyang Fonyo Heavy Industries Co., Ltd. If you’re looking for reliable railway components for train couplers, railway brake shoes, Stator Press Rings, Gearbox Housing, Railway Wheels, or other railway parts, our company offers high-quality solutions used in modern high-speed trains worldwide. Visit our website www.railwaypart.com to learn more.

It’s an honour to contribute to technology that moves people safely, efficiently, and intelligently across the country. If you have any requirement for the railway components, such as railway wheels, railway castings, or rail maintenance machines, please contact us.

WhatsApp: +86 15515351287

Email: sales@railwaypart.com