Why shouldn&#x27;t they?<p>There is ICAO and there are rules concerning the filing of passenger manifests and radio contact to break ADIZ (air defense identification zone), but what purpose would it serve to ban international or blue-water flying?<p>For the most part, the light airplanes being discussed aren&#x27;t anywhere near the trans-oceanic airliners as the lights will be at FL250 (25,000&#x27;) or below and usually below 18,000&#x27;. Bicycle or scooter on a highway is a completely different concern, IMO.