“Few people would dream of hiring a contractor to build them a house and expect it to be built to a safe standard only 85 percent of the time; similarly, few people would want to eat out in a restaurant where only 85 percent of the meals were safe to eat. Why then do we accept such sloppiness in road safety, where a situation in which 85 percent of drivers going the speed limit is deemed to be good enough?” Road SafetyTraffic Engineering85th Percentile Author:Neil Arason