Title: Highway safety
Subjects: Automobiles, Traffic accidents, Statistics, Evaluation, Safety measures, Seat belts, Research, United States, Traffic safety, Law and legislation, Regression analysis, United States. National Highway Traffic Safety Administration, Crashworthiness, Crash injuries, Safety regulations, States, Testing, Statistical methods, Motorcycles, Rural roads, Safety hats, Safety appliances, Motorcyclists, Weight, Speed, Motorcycling accidents, Motorcycle helmets, Measurement, Costs, Speed limits
Places: United States