<P> Sweden was LHT from about 1734 to 1967 , despite having land borders with RHT countries , and approximately 90 percent of cars being left - hand drive ( LHD ) vehicles . A referendum was held in 1955 , with an overwhelming majority voting against a change to RHT . Nevertheless , some years later the government ordered a conversion , which took place at 5 am on Sunday , 3 September 1967 . The accident rate dropped sharply after the change , but soon rose back to near its original level . The day was known as Dagen H ( `` H - Day '' ) , the ' H ' being for Högertrafik or right traffic . When Iceland switched the following year , it was known as H - dagurinn , again meaning `` H - Day '' . </P>
<P> Sweden was LHT from about 1734 to 1967 , despite having land borders with RHT countries , and approximately 90 percent of cars being left - hand drive ( LHD ) vehicles . A referendum was held in 1955 , with an overwhelming majority voting against a change to RHT . Nevertheless , some years later the government ordered a conversion , which took place at 5 am on Sunday , 3 September 1967 . The accident rate dropped sharply after the change , but soon rose back to near its original level . The day was known as Dagen H ( `` H - Day '' ) , the ' H ' being for Högertrafik or right traffic . When Iceland switched the following year , it was known as H - dagurinn , again meaning `` H - Day '' . </P>
what side of the street do they drive on in sweden
what side of the street do they drive on in sweden
right
right