What is the speed restriction for Siemens trains with deflated or isolated air suspension?

The speed restriction for Siemens trains with deflated or isolated air suspension is 80 km/h. This limit is established to ensure the safety and stability of the train while operating under conditions where the suspension system is not functioning optimally.

Air suspension plays a critical role in managing the vehicle's dynamics, especially in dampening vibrations and maintaining traction. When the air suspension is deflated or isolated, the train experiences changes in its behavior, which can potentially lead to instability and discomfort. By enforcing a speed limit of 80 km/h, the operation is conducted at a safer pace, mitigating risks such as derailment or excessive wear on the train's components.

This precaution is important for maintenance personnel and operators, as it allows for safe travel until the suspension system can be repaired or returned to normal function.