Mercury (element) elevated over outdoor concentrations, at a range of 0.0065 – 0.523 μg/m. The average was 0.069 μg/m. Mercury also enters into the environment through the improper disposal (e.g., land filling, incineration) of certain products. Products containing mercury include: auto parts, batteries, fluorescent bulbs, medical products, thermometers, and thermostats. Due to health concerns (see below), toxics use reduction efforts are cutting back or eliminating mercury in such products. For example, the amount of mercury sold in thermostats in the United States decreased from 14.5 tons in 2004 to 3.9 tons in 2007. Most thermometers now use pigmented alcohol instead of mercury,
National Traffic and Motor Vehicle Safety Act initiated a campaign to prevent motor-vehicle-related injuries. In 1966, passage of the Highway Safety Act and the National Traffic and Motor Vehicle Safety Act authorized the federal government to set and regulate standards for motor vehicles and highways. The Highway Safety Act resulted in the national adoption of the Manual on Uniform Traffic Control Devices, while the National Traffic and Motor Vehicle Safety Act led to the national adoption of the Federal Motor Vehicle Safety Standards. High-Risk Populations Occupant-Protection Systems "Safety belts:" In response to legislation, highly visible law enforcement, and public education, rates of safety belt use nationwide had