Here in Northern Ireland I recall at least one unscheduled arrival on the two-lane A5 in Co. Derry. The transatlantic single-engine ferry flight was low on fuel and weather was closing, so he wisely chose the first chunk of land and fortunately the road was quiet. The Customs eventually arrived from Aldergrove, the aircraft was refuelled, the Royal Ulster Constabulary closed the road for 15 minutes, and the pilot went happily on his way.