Historical Left-side Riding
Historically, riding left allowed for right-handed swordsmen to have their dominant hand closer to an oncoming opponent, facilitating defense and combat while traveling on horseback.
Regulation and Consistency
The UK formalized left-side driving in the early 18th century with the Highway Act 1835. Consistency across the burgeoning empire made administration and regulation of road traffic more manageable.
Influence of Horse Traffic
Traveling on the left was the norm for horse-drawn vehicles. It prevented collisions, as the driver's whip hand (right) wouldn't accidentally hit pedestrians or oncoming traffic.
Railway Impact
UK railways adopted left-hand travel due to the influence of American engineer Robert Stephenson, consolidating the practice of left-side movement in British transportation infrastructure.
Post-Automobile Persistence
Despite global shifts to right-side driving, the UK persists with left-hand traffic. This tradition maintains continuity with historical practices and avoids the massive costs of infrastructure changes.Japan's Left-Side Driving
Japan adopted left-side driving based on samurai sword etiquette, mirroring UK's practice, despite no colonial ties.
Why was left-side riding historically preferred?
Left is safer for left-handed people.
Right hand closer to opponent.
Better for mounting horses.
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