"Rules of the Road" (or offically the International Regulations for Preventing Collisions at Sea) is a set of 38 internationally recognized rules which govern the conduct of ships at sea and to the sea lanes but the following ditty also pertains to our favorite past time.

Here lies the body of Michael O'Day,
Who died maintaining his right of way,
He was right, dead right, as he sailed along,
But he's just as dead as if he'd been wrong.

Being proactive in keeping a safety area around you will save your butt.