Why machinery, components and systems in the rail industry are so hard to explain

It isn't because the products are complicated. Semiconductors are complicated too. It comes down to a combination of four traits that, in this industry, almost always show up together.

They're big

What runs on the track rarely fits on an exhibition stand, and almost never in a meeting room. So what gets shown is a fragment: a wheelset, a cutaway model, a housing. But what gets sold is the whole thing — the system as installed, in operation, working together with everything else. Between what's sitting on the table and what's being discussed, there's a gap that sales has to close with words.

Then there's the effort behind it. Whatever comes along has to be transported: heavy haulage, cranes, days of set-up, the trip back, storage until the next trade show. For large exhibits, logistics is regularly the single biggest line item of a trade show appearance — and at the end of it all, still only a fragment stands on the floor.

They last for decades

Procurement cycles running over two decades have a consequence that has nothing to do with technology: the decision isn't made by one person, but by a committee. Around the table sit engineering, procurement, maintenance, operations, often regulators and finance too. Everyone has a different question, and few of them read a technical drawing. An argument that convinces the design engineer never reaches the buyer — and vice versa.

They come in countless variants

Track gauge, power system, approval requirements, national regulations, installation conditions, interfaces with existing infrastructure. Two customers rarely get the same product. No catalogue can capture that combinatorics, and a sample piece only ever shows one of many possible configurations — usually, of all things, not the one being discussed.

They're under constant pressure to stay available

Maintenance happens in the possession window: at night, outdoors, under time pressure, often by rotating staff. Knowledge needs to be available exactly where the spanner is turning — not in a folder in the workshop, and not in a manual written for normal operation rather than for the fault that's actually in front of you.

Where explaining breaks down in practice

These four traits lead to three situations that everyone in the industry recognises from their own day-to-day work.

The fragment on the stand

A visitor stops in front of a cutaway model. They see a component and have no idea where it sits, what it does, or why it's different from the competitor's two halls over. The stand staff explain it — for the fortieth time that day — with their hands and a brochure. That works reasonably well with specialists. Everyone else is left with polite confusion.

The committee where not everyone is an engineer

Six people sit in on the proposal presentation. Two understand the product straight away; the other four form a judgement based on documents written for the first two. Where the technical difference doesn't become visible, the decision ultimately comes down to the one thing all six can compare: price. That's not a procurement problem. It's a presentation problem.

The variant that doesn't exist yet

The system goes into series production in spring. It has to be sold now. Right now it exists as a design dataset, a set of calculations and a statement of intent — but there's nothing you can bring along, put on a table or photograph. For marketing and sales, that means market entry starts months later than it should.

What a prepared 3D model changes

In all three situations, the same thing is missing: a way to make the whole product, its functions and its variants visible. A prepared 3D model provides a shared visual basis for that — not as a replacement for the conversation, but as something to have the conversation about.

The data for this already exists in most companies. Engineering holds a dataset that describes every variant, every cross-section and every movement precisely. Once it's approved, nobody touches it again. Prepared for presentation once — reduced, broken down into assemblies, and enriched with materials and motion — it can be put to use in six areas:

• Engineering and development: align on variants and installation situations before anything is built — including with stakeholders who can't read a drawing.
• Marketing and communications: product images for every variant, no photoshoot and no physical sample required — even for products that don't exist yet.
• Sales and advisory: show exactly the variant being discussed in the meeting — rotated, cut open, configured.
• Trade shows and showrooms: put the whole thing next to the fragment. True to scale via augmented reality in the room, or as a walkable installation in virtual reality.
• Training and qualification: practise procedures on a model that never sits idle, never breaks, and never takes up floor space on the actual plant.
• Service and maintenance: step-by-step instructions overlaid on the real component via AR, right where the spanner is turning.

The economic case isn't just about a single application. Once the product model has been prepared, that same data foundation can be used — and extended as needed — across marketing, sales, trade shows, training and service.

What you need for this — and what you don't

You need design data in some usable form. You need a sense of which two or three variants are actually relevant to sales — not all forty. And you need someone in-house who can answer technical questions without a meeting having to be scheduled every time.

Not every application needs a digital twin

The term comes up often in this context, but it means more than a visualised 3D model: a digital twin is connected to data from the real object or system and can reflect its state or behaviour. That can be useful for certain applications in operations, service or maintenance. For many tasks in sales, trade shows, communications or training, however, a prepared 3D model without a live data connection is enough. What matters isn't the technology, but the specific use case. We've explained the difference between the terms here.

You don't automatically need a headset, either

AR views and configurators run in the browser on a smartphone or tablet, via a link or QR code. Hardware only comes into play once an entire environment needs to be experienced, or when hands need to stay free during a service task.

Which of these routes is the right one usually becomes clear in the first conversation. We've worked for industry, construction and transport for over twenty years, and we hear these starting points regularly. What looks like a technology question from the outside is, as a rule, a question about exactly where understanding breaks down in the sales or service process.

How to tell whether it's worth the effort

Five questions. If you answer yes to three of them, it's at least worth doing the sums.

• Does your product not always physically fit on your trade show stand or in a meeting room?
• Are people who can't read a technical drawing regularly part of your purchasing decisions?
• Do you maintain more than one sample piece for sales, trade shows and the showroom?
• Does it take several rounds of corrections between the first enquiry and the right proposal, because variants get misunderstood?
• Do you have to market products before they physically exist?

Meet us at InnoTrans 2026

We'll be at InnoTrans in Berlin from 22 to 25 September. If you're exhibiting there, we'll come straight to your stand. In twenty minutes, we'll look together at exactly where an interactive 3D model can support marketing, sales, training or service — including a short demo on a tablet.

Book a 20-minute slot at InnoTrans