What rules to know when flying FPV in the United States

If you're wondering what the legal rules and regulations are when flying FPV in the United States, here's a summary:

Registration Requirement
All drones weighing between 0.55 lbs (250g) and 55 lbs must be registered with the FAA. Registration number must be displayed on the drone.
TRUST Certification
All recreational drone pilots must pass The Recreational UAS Safety Test (TRUST) and carry proof of passage when flying.
Visual Line of Sight
Always keep your drone within visual line of sight. If using FPV goggles, you must have a visual observer who can maintain VLOS.
Maximum Altitude
Do not fly higher than 400 feet (120m) above ground level unless your drone remains within 400 feet of a structure.
Airspace Restrictions
Never fly in restricted airspace without prior authorization. Use the FAA's B4UFLY app or LAANC system to check airspace restrictions and request authorizations.
No Flying Over People
Do not fly over groups of people, public events, or stadiums full of people without appropriate FAA authorization.
No Flying Near Emergencies
Never fly near aircraft or emergency response efforts such as fires or hurricane recovery efforts.
Daytime Operations
Fly only during daylight hours or civil twilight (30 minutes before official sunrise to 30 minutes after official sunset) with appropriate lighting.
State and Local Laws
Be aware that many states, cities, and national parks have their own drone regulations that may be more restrictive than FAA rules.
Remote ID
As of March 2023, most drones must have Remote ID capability to broadcast identification and location information during flight.