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Amid poor worldwide road safety despite the United Nations’ ambitious goals, a team o researchers sought to quantify the effects of Japan’s annual road safety campaigns. These 10-day campaigns have been held twice yearly since 1952. The researchers acquired monthly road death data for 1949–2019 and modeled these 71 years of numbers. They found a 2.5% reduction in daily road deaths in 1952–2019 in the campaign months.