Anti-climb protection

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Desiro UK from Siemens : the anti-climb protection is formed by the two ribbed plates on the left and right of the coupling.

On some vehicles, such as the DB series 422 , the anti-climb protection is installed behind panels

The anti-climbing device refers to a device in rail vehicles , which on collisions , preventing the car body is lifted from one of the vehicles in the air and pushed over the other car body. This process is known as climbing . In the case of vehicles without anti-climb protection, the structure of the vehicle remaining on the rails is often destroyed by the comparatively stable floor of the vehicle as it climbs, which often takes many lives.

In tank wagons , the anti-climb protection prevents damage to the tank of the vehicle remaining on the rails through penetration of the buffers of the neighboring vehicle.

The device is attached to the front of the vehicle and usually consists of a series of horizontally arranged ribs which wedge themselves in the event of a collision with the same structural element of the neighboring vehicle and can thus absorb the vertical forces.

In Europe, the requirements for climbing protection are specified in the European standard EN 15227. This standard was first published in 2011, but has a number of predecessors. The decisive factor was the SAFETRAIN research project funded by the European Commission and UIC, which ended in 2011. Reference collision accidents were derived from a Europe-wide analysis of collision accidents, which cover the majority of all collision accidents. Computer simulations were then created that determined the optimal arrangement of the energy-absorbing components. The results were then validated with crash tests, which were finally published in 2008 in the standard DIN EN 12663-1 "Strength requirements for car bodies of rail vehicles", which has existed since 2000.

Anti-climb protection in contact after a Washington Metro crash

In Europe, the position of the anti-climber protection corresponds to the usual side buffers, also for vehicles with a central buffer coupling (approx. 1000 mm above the top edge of the rail and both buffers 1750 mm apart). In North America, the anti-climb protection is attached over the coupling. The requirements for an associated crash energy management system with consumption elements were defined in an FRA working group from 2005 onwards.

Web links

• A train-to-train impact test. November 13, 2012, accessed on July 8, 2013 (English, film from the Transportation Technology Center in Pueblo CO, above: without anti-climbing protection, below: with anti-climbing protection and additional collision energy-consuming elements.). 

Individual evidence

1. ↑ Collision safety in rail vehicles . Research information system for mobility and traffic at the TU Berlin. 23rd March 2017.
2. ^ A Crash Energy Management Specification for Passenger Rail Equipment. Retrieved August 11, 2019 .