Protecting Lives on Rails: EN 15663 Crashworthiness Standard Explained
EN 15663 specifies crashworthiness requirements for railway vehicles, defining energy absorption and structural integrity to protect passengers and cargo in collisions.

What Is EN 15663?
EN 15663 is a European standard that defines crashworthiness requirements for railway vehicles.
It establishes rules for structural integrity, energy absorption, and safety performance to minimize passenger and cargo injuries during collisions.
Importance of EN 15663 in Railway Safety
Railway vehicle crashworthiness is critical for protecting human life and cargo during accidents.
EN 15663 ensures that vehicle structures absorb impact energy efficiently and maintain survivable spaces for occupants, supporting safe train operations.
- Specifies structural integrity requirements for rolling stock
- Defines energy absorption limits and crash scenarios
- Ensures protection for passengers and cargo
- Supports compliance with European interoperability and safety standards
Scope and Technical Coverage
The standard applies to all types of railway vehicles, including passenger coaches, freight wagons, and locomotives.
It integrates with braking, maintenance, and track standards to enhance overall operational safety.
- Crash energy management and absorption zones
- Structural reinforcement and design guidelines
- Collision scenarios and simulation methods
- Integration with EN 13749 braking and EN 16729-1 maintenance
- Verification and testing procedures for vehicle safety
Key Technical Parameters
| Parameter | Description | Operational Impact |
|---|---|---|
| Energy Absorption | Ability of vehicle structures to absorb collision energy | Reduces passenger injuries and damage to cargo |
| Structural Integrity | Resistance to deformation under impact | Maintains survivable space and vehicle stability |
| Crashworthiness Zones | Designated areas for impact absorption | Directs forces away from passenger compartments |
| Testing and Verification | Procedures to validate crashworthiness performance | Ensures compliance with European safety standards |
Relationship with Other Standards
EN 15663 complements EN 13749 (braking), EN 16729-1 (maintenance), and EN 15273 (track gauge) to ensure that rolling stock provides maximum safety during collisions.
It aligns with TSI Rolling Stock and UIC crashworthiness guidelines.
- Supports EN 13749 braking performance for emergency scenarios
- Integrates with EN 16729-1 maintenance to ensure safety systems are functional
- Aligns with TSI Rolling Stock and European interoperability rules
Who Uses EN 15663?
The standard is applied by rolling stock manufacturers, railway operators, infrastructure managers, and certification authorities to ensure crashworthy vehicle designs and operational safety.
- Train manufacturers and designers
- Railway operators and safety coordinators
- Certification and approval authorities
- Maintenance teams and inspection personnel





