Under Part 107, operating a small UAS from a moving vehicle is:
Why →
Under 14 CFR § 107.25, operating from a moving vehicle or aircraft is permitted only over sparsely populated areas. It is not permitted over populated areas without a waiver.The trap →
This is a common "prohibited in all circumstances" trap. The FAA allows moving-vehicle operations but only in sparsely populated areas. Airspace class is irrelevant here. Population density is the deciding factor.SOURCE → 14 CFR § 107.25CHECKED APR 21ACS I.B.K6EASY