Which group of UAS typically has more regulatory restrictions due to weight and altitude?

The correct answer is based on the classification of Unmanned Aircraft Systems (UAS) according to their weight and operational capabilities. Group 2 UAS, which weigh more than 4.4 pounds (2 kg) but less than or equal to 55 pounds (25 kg), are subject to stricter regulatory restrictions primarily because they operate at altitudes that can potentially interfere with manned aircraft operations and because of the risks associated with their increased weight.

These regulations are in place to ensure safety and minimize risks to people, property, and aircraft in the vicinity. Such restrictions may include limits on operational altitude, required certifications for pilots, and specific airspace restrictions. Larger aircraft can cause more significant damage in case of an accident, leading to the necessity for more stringent regulatory oversight.

In contrast, the other groups, such as Group 1, which includes the smallest UAS weighing up to 4.4 pounds, have fewer restrictions due to their lower weight and typically lower operational altitudes. Groups 3 and 4 include larger UAS that may operate under different regulatory frameworks based on their specific characteristics and intended operational use.