In the US, if you’re moved to another location for that amount of time involuntarily that’s an arrest not a detention. Seems the French code gives more police powers than our constitution.

Edit: they need something similar to what we’d call probable cause and I’d personally call it an arrest without charges https://www.sba-avocats.com/Criminal-defense-attorney-paris-france-police-custody-mobile.html

They also have similar rights against self incrimination in France.