Overview
ISO/TR 5914:2024 - Railway applications - Rolling stock - Interior passive safety is a Technical Report (first edition, 2024) that documents worldwide best practice for minimizing death and injury to occupants of heavy rail vehicles (coaches, fixed units, trainsets) during collisions, derailments and other dynamic events. The report focuses on interior design strategies and retrofit considerations for passenger areas, describing how interior measures complement structural crashworthiness to preserve survival space, contain occupants, and reduce secondary impacts.
Key Topics and Technical Focus
- Interior passive safety principles - containment, compartmentalization and energy-absorbing design to limit occupant travel and reduce injury severity.
- Strategic objectives - relationship between rail and road safety approaches, and integration with structural crash energy management (CEM).
- Component and material guidance - selection of non-aggressive shapes, energy-absorbing seats/tables, glazing and luggage fittings to reduce injury risk.
- Structural energy absorption and collapse - overview of approaches such as UK practice (GMRT2100) for controlled deformation and survival space preservation.
- Secondary impact assessment - methods to analyze and mitigate occupant impacts with interior fixtures; special considerations for persons with reduced mobility.
- Geometric criteria - design principles to limit trajectories and reduce hazardous contact points.
- Computer simulations, calculations and testing - guidance on modelling, test evidence and potential reuse of component test results for certification or refurbishment.
- Open bay seating and refurbishment - specific considerations for large open-plan interiors and reused components.
- Informative annexes on experience (UK/US), accident statistics, cost/benefit analysis, accessibility, and an example abbreviated injury scale.
Practical Applications
ISO/TR 5914:2024 is practical guidance for reducing occupant injury risk through interior design and retrofit. Typical applications include:
- Designing crash-mitigating passenger interiors (seats, tables, stanchions, luggage racks, glazing).
- Refurbishment programmes that improve interior passive safety without full structural rebuilds.
- Safety assessments, simulation studies and laboratory testing plans for interior components.
- Accessibility and human-factor design to protect vulnerable passengers during collisions, derailments or emergency braking.
Who should use this document
- Rolling stock designers and OEMs
- Train interior engineers and product designers
- Rail operators and fleet refurbishment teams
- Safety engineers, regulators and standards writers
- Accessibility and human factors specialists
Related standards and references
- The report references normative terminology from EN 17343:2023 and complements existing national and regional crashworthiness standards (Europe, North America). ISO/TR 5914:2024 is an informative Technical Report that consolidates global best practice rather than prescribing mandatory requirements.
Keywords: ISO/TR 5914:2024, interior passive safety, railway rolling stock, crashworthiness, survival space, secondary impact, containment, compartmentalization, train interior design.