Solo Students Weather Limits
I am interested to know what Weather Limits (vis, cloudbase) are put upon solo helicopter students during a course (PPL and CPL) at training establishments around the world.
Limits may vary between circuit work, general handling in the training area, and cross-country nav including the landaway flight.
Do national authorities place their own minima or do the schools just make up their own?
What is safe? Should there be an amount of discretion from the authorising instructor or should limits be limits?