A pedestrian walking during the day on the shoulder of an interurban road, must they wear a reflective vest?

A pedestrian walking during the day on the shoulder of an interurban road, must they wear a reflective vest?
A)Yes, they will always wear the vest, both day and night.
B)No, they will only wear it at night or in conditions that reduce visibility.Correct
Pedestrians walking on interurban roads, between sunset and sunrise or under conditions that reduce visibility, must wear a luminous or retro-reflective element that is visible from a minimum distance of 150m. Groups of pedestrians shall also carry the necessary lights to specify their position and dimensions, white or yellow facing forward and red facing backward.
When they walk during the day or do so on urban roads, they will not need to have a reflective vest.