Let there be light: Daylight saving time and road traffic collisions
利用澳大利亚的夏令时转换和试验，研究发现夏令时对致命交通事故无长期影响，但会改变事故在一天中的分布。
Abstract This paper examines the impact of daylight saving time (DST) on fatal road crashes in Australia. I exploit within year transitions to and from DST in a regression discontinuity in time framework. To examine the long run effect of the policy, I use trials of DST implemented in various states, and a DST extension due to the Sydney Olympics. Neither the transition to or out of DST, nor the long run effects of DST have an impact on fatalities on the road. However, there is evidence of reallocation of accidents over the day due to ambient light.