Speed limit enforcement and road safety

• We study the impact on road safety of announced one-day speed limit monitoring operations (SLMO). SLMO are accompanied by media campaigns that provide information dangers speeding. find reduce traffic accidents and casualties about eight percent. Immediately after end, return to usual level. Drivers react an increased detection probability violations. Providing speeding does not alter speeders’ driving behavior. massive (SLMO) announce Using register data universe police reported in a generalized difference-in-differences approach, we Yet, immediately day, all effects vanish. Further evidence suggests people drive more slowly responsibly days avoid fines; providing speeders' behavior sustainable way.