5.1. The vertical lighting of an Alpine ski slope accessible to Alpine skiers shall be at least 2 lux in any place on that slope, and the average vertical lighting of any 35 m longitudinal segment of such slope shall be at least 5 lux.
The minimum vertical lighting measured in any place in a segment shall not be less than 1/10 of the average vertical lighting in that segment.
Vertical lighting shall be measured in accordance with the Measurement Procedure for Lighting Levels on Alpine Ski Slopes in Schedule 0.1.