The Economist explains why Sweden has so few road deaths:
Last year 264 people died in road crashes in Sweden, a record low. Although the number of cars in circulation and the number of miles driven have both doubled since 1970, the number of road deaths has fallen by four-fifths during the same period. With only three of every 100,000 Swedes dying on the roads each year, compared with 5.5 per 100,000 across the European Union, 11.4 in America and 40 in the Dominican Republic, which has the world’s deadliest traffic, Sweden’s roads have become the world’s safest.
Planning has played the biggest part in reducing accidents. Roads in Sweden are built with safety prioritised over speed or convenience. Low urban speed-limits, pedestrian zones and barriers that separate cars from bikes and oncoming traffic have helped. Building 1,500 kilometres (900 miles) of “2+1″ roads—where each lane of traffic takes turns to use a middle lane for overtaking—is reckoned to have saved around 145 lives over the first decade of Vision Zero. And 12,600 safer crossings, including pedestrian bridges and zebra-stripes flanked by flashing lights and protected with speed-bumps, are estimated to have halved the number of pedestrian deaths over the past five years. Strict policing has also helped: now less than 0.25% of drivers tested are over the alcohol limit. Road deaths of children under seven have plummeted—in 2012 only one was killed, compared with 58 in 1970.