En 17168 [repack] -

| Class | Max Train Speed (km/h) | Max Aerodynamic Pressure (kPa) | Typical Application | |-------|------------------------|--------------------------------|----------------------| | A | 100 | 0.5 | Low-speed, regional | | B | 120 | 0.75 | Commuter lines | | C | 160 | 1.0 | Intercity | | D | 200 | 1.5 | High-speed passing | | E | >200 (special) | 2.0+ (by agreement) | Very high speed |

: While it includes requirements for fire resistance of materials and the use of barriers to minimize flame/smoke spread, it does not cover certain normative fire performance aspects covered by other specialized standards. Strategic Benefits for Railway Operators en 17168

The standard requires that with the barrier closed, the horizontal gap between the barrier face and the train door sill does not exceed: | Class | Max Train Speed (km/h) |

Physical and timing requirements for standard passenger doors. 👥 Who Needs to Use It

Some regional committees (like the UK’s BSI) have noted that while the standard establishes solid minimums, procurement authorities often need to write advanced custom specifications to achieve total system safety depending on their exact crowd sizes. 👥 Who Needs to Use It?