Snow, ice and hail

Requirements to prevent vehicles from degradation for snow, ice and hail conditions. What ‘snow, ice and hail’ conditions have to be considered, scenarios like snowdrift, powder snow, snowfall of large quantities of light snow with low water equivalent content, temperature and humidity variation during one single run causing ice build-ups shall be taken into account. To define if capability to remove snow in front of the train is needed. To consider possible consequence of snow/ice on running stability, brake function and brake power supply, needs for windscreen's equipment, providing the driver with acceptable climate for working.