| Principle | Description | Platform Barrier System | Station Earth | Traction Return Rail | | :--- | :--- | :--- | :--- | :--- | | | Bonded to Station Earth | Bonded | Reference | Insulated | | B | Insulated from Station Earth (Floating) | Floating | Isolated | Isolated | | C | Bonded to Traction Return Rail | Bonded | Insulated | Bonded |
Implementing an compliant system requires coordinated cooperation across several engineering and administrative groups:
: Integration with train control and signaling sub-systems to ensure the train is correctly aligned before doors operate [3]. Operational Performance
Synchronization of the platform barriers directly with train vehicle doors and signaling systems. ⚖️ Pros and Strengths en 17168
The standard includes informative annexes to assist with specialized engineering challenges: Structural Design : Guidance on the physical integrity of the barrier. Earthing and Bonding
EN 17168 provides numerous benefits to manufacturers, users, and regulatory bodies, including:
: Standardizes low-to-medium speed urban boarding points. | Principle | Description | Platform Barrier System
A rail operator replacing worn pads on a Siemens Velaro D high-speed train:
Fixed Structure and Fixed Parts – Requirements for the permanent structure along the platform edge.
| Parameter | Requirement | |-----------|-------------| | | Mechanical (e.g., rivets, screws) or bonding – must withstand max braking force without detachment | | Block pitch & pattern | Defined coordinate system for hole/block positions to ensure caliper clearance | | Backing plate thickness | Minimum 8 mm (typical steel) to resist bending under load | | Flatness | <0.3 mm over entire plate to avoid uneven wear | | Thermal stability | No deformation above 400°C (simulated emergency brake stop) | | Corrosion protection | Zinc plating or equivalent (salt spray test ≥72 h) | Earthing and Bonding EN 17168 provides numerous benefits
is a European standard adopted by the European Committee for Standardization (CEN) that sets out the technical specifications for platform barrier systems. These systems act as a safety barrier between the waiting passengers on the platform and the tracks.
Adherence to EN 17168:2021 allows infrastructure owners and operators to: