Driving on the left

“Nowadays all European countries drive on the right but in Britain and Ireland, you must drive on the left. Why do they drive on the left? We don’t know for sure but there are several hypotheses.
It may be due to horse carriages. The coach man held the reins with the left hand and the whip with the right hand. They had to drive on the left so the whip didn’t hit pedestrians or get entangled in trees.
Some people say comes from the Middle Ages. When knights fought they held the weapon on their right hand and it was better to have their enemy on their right rather than on their left.
It may have its origins in the Viking way of navigation. Countries under Viking influence, like Britain and Scandinavian countries adopted this traffic system for roads. Sweden was the last country in the continent to change to the European Code. It was on in 1967 with a cost of 600 million kronas, serious traffic problems and many casualties. Accidents increased dramatically that year. Maybe these figures discouraged the British from following the Swedish example and they continue driving on the left.”