In sparsely populated areas with no residential, commercial, industrial or recreational areas close by (150m or more), the usage of UAS is less restriced. Always remember to maintain an altitude of 120m AGL or less and keep required distance to uninvolved persons.

Suitable C-classes	C0-C4 or UAS with no C-class
Subcategory	A1, A2, A3
Maximum altitude	120m AGL or less (1:1 rule applies for C2-C4)
Flying over uninvolved people	C0, C1 - should be avoided C2, C3, C4 - not allowed, see 1:1 rule