OEM Railway Seating Lightweight EN 45545-2 Made in Italy

Lightweight or Comfortable? Why Europe and the US Ask Different Things of a Train Seat

A train seat is never designed in a vacuum — it is designed for a market. And the two largest rail markets in the world pull seat engineering in different directions: Europe optimises relentlessly for weight, the United States for the onboard experience. Understanding why is the key to building seats that win on both continents.

1959Founded (PU foaming)
1997Complete railway seats
7Plants worldwide
100%Foams, covers & frames in-house

Europe: weight is a regulation, not a preference

In Europe the pressure to reduce weight is intense and codified. Lowering the overall mass of a rail car means less weight to move, and less weight to move means lower energy consumption and fewer emissions — reductions that can reach around 30%. For European operators and OEMs chasing decarbonisation targets, every kilogram in the interior is scrutinised, and the seat is one of the few places where meaningful mass can still be removed. Here, "lightweight" is not a marketing adjective — it is a design constraint.

The United States: distance makes comfort the priority

In the US the calculus is different. Weight-reduction rules are far less pressing and rarely the deciding factor. What dominates instead is distance: American routes are much longer, so passengers spend hours — sometimes a full day — in the same seat. Onboard comfort and the quality of the experience become the central design brief: ergonomics for long dwell times, integrated power, generous support. The seat is judged less by its mass and more by how it feels at hour six.

Same product, two philosophies. A seat engineered only for European lightweighting can feel spartan on a long American route; a seat built purely for US comfort can be too heavy for European emissions math. The real challenge is a platform that can flex between the two.

Safety is the constant: EN 45545-2

One thing does not change with geography: fire safety. EN 45545-2, the European standard for the fire behaviour of railway materials, classifies requirements by hazard level (HL1–HL3), covering ignitability, heat release and smoke toxicity. Every material in the seat — structure, foam, upholstery, trim — must contribute to controlling a fire. Whether a seat is optimised for weight or for comfort, it must clear this bar first.

How a modular platform serves both markets

The resolution is not two separate products but one modular architecture. A common, validated structural platform can be configured with lighter materials and minimal mass for a European regional fleet, or with deeper cushioning, power and long-haul ergonomics for a North American intercity car — without re-engineering or re-homologating the seat each time. Weight reduction comes from material intelligence — aluminium and lightweight-alloy frames, optimised high-resilience foams, fire-retardant upholstery — so lightness and comfort become dials to turn, not a trade-off to accept.

The Clerprem approach: engineering on both continents

Founded in 1959 as a polyurethane-foam specialist, with over 50 years in automotive and transport seating and a full railway seat manufacturer since 1997, Clerprem develops 100% of foams, covers and structures in-house across 7 plants in Italy, Germany, Mexico, Tunisia and the United States. That footprint lets a single supplier answer both briefs: European lightweighting for OEMs such as Alstom, Siemens and Deutsche Bahn, and American comfort with Buy America–compliant seats built in Sacramento for the Amtrak Siemens Venture (AIRO) fleet. Italian engineering, local manufacturing — designed to meet EN 45545-2, ADA and Buy America, and certified to the industry's core quality, environmental and rail-specific standards.

"Less is more" is not only a payoff line. In rail seating it is the discipline of removing every gram that safety and comfort do not require — on either side of the Atlantic.

Certifications

ISO 9001 ISO 14001 IATF 16949 IRIS · ISO 22163 EN 15085-2 EN 17460 ISO 50001 DB TL 918-340 Gender Equality

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Frequently asked questions

Why is train seat weight more regulated in Europe than in the US?

In Europe, reducing a rail car's overall weight directly lowers energy use and emissions — savings that can reach about 30% — so lightweighting is tightly driven by decarbonisation rules. In the US, weight rules are less pressing; with much longer routes, onboard comfort and passenger experience are the priority instead.

Are lightweight train seats less safe or less comfortable?

No. Modern weight reduction comes from material engineering — aluminium structures, optimised foams, fire-retardant upholstery — not from removing safety or comfort. A well-designed lightweight seat fully meets EN 45545-2 fire-safety requirements and can still be configured for long-haul comfort.

What is EN 45545-2?

EN 45545-2 is the European standard for the fire behaviour of materials and components in railway vehicles. It classifies requirements by hazard level (HL1–HL3), covering ignitability, heat release and smoke toxicity for every seat material.

Can one seat platform serve both European and American trains?

Yes. A modular seat platform lets an OEM dial in minimal mass for European fleets or deeper comfort and power for long US routes on the same validated, compliant structure — customisation without re-engineering.

Who manufactures OEM train seats for both Europe and the US?

Clerprem, a railway seat manufacturer founded in Italy in 1959 (railway seats since 1997), produces lightweight, customisable seating across 7 plants, supplying European OEMs and building Buy America–compliant seats in Sacramento for the Amtrak Siemens Venture (AIRO) fleet.

Clerprem S.p.A. — OEM railway and automotive seating. Polyurethane foaming since 1959, complete railway seating since 1997. Made in Italy.

Read more about  Amtrak 

https://www.amtrak.com/for-amtrak-airo