Drunk driving in the United States pressure from groups like Mothers Against Drunk Driving (MADD) and Students Against Destructive Decisions (SADD) and leaders like Candy Lightner. Significantly, zero tolerance laws were enacted which criminalized driving a vehicle with 0.01% or 0.02% BAC for drivers under 21. This is true even in Puerto Rico, despite maintaining a legal drinking age of 18. On May 14, 2013, the National Transportation Safety Board recommended that all 50 states lower the benchmark for determining when a driver is legally drunk from 0.08 blood-alcohol content to 0.05. The idea is part of an initiative to eliminate drunk driving, which accounts for
Motorcycle fatality rate in U.S. by year was also 14% in 2008. In 2008, 47% of fatal accidents were with another vehicle, and of those 77% involved a head-on collision with a motorcycle and in 7% the motorcycle was struck from behind. 59% of those killed were wearing a helmet, which were estimated to give a 37% increased chance of overall survival and reduction in the chance of a head injury;helmet use has been the subject of various studies and laws. In 2013, 6% of the fatalities were passengers (non-operator) of the total deaths that year for motorcycles 4,688. From 1980 motorcycle ownership among riders aged 40