when did sweden change to right hand drive
Dagen H Dagen H (H day), today usually called "Högertrafikomläggningen" ("The right-hand traffic diversion"), was the day, 3 September 1967, on which traffic in Sweden switched from driving on the left-hand side of the road to the right.[1] The "H" stands for "Högertrafik", the Swedish word for "right traffic". It was by far the largest logistical event in Sweden's history.[2]
Port and starboard The term starboard derives from the Old English steorbord, meaning the side on which the ship is steered. Before ships had rudders on their centrelines, they were steered with a steering oar at the stern of the ship and, because more people are right-handed, on the right-hand side of it.[citation needed] The term is cognate with the Old Norse stýri (rudder) and borð (side of a ship).[citation needed] Since the steering oar was on the right side of the boat, it would tie up at wharf on the other side. Hence the left side was called port.[citation needed]