Studying how airflow, noise, and perceived safety affect passengers when trains pass platforms at high speed.
An infrastructure operator wanted to increase the speed of vehicles passing passenger areas. Before implementing this change, it was necessary to understand how higher speeds would affect people waiting nearby. Environmental factors such as airflow, noise, and perceived safety needed to be assessed to ensure that passengers would not experience unsafe or uncomfortable conditions.

The study provided evidence that supported a safe increase in passing speeds. It also resulted in a structured methodology for assessing passenger safety and comfort in similar high-speed operational environments.