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The Federal Motor Vehicle Safety Standards (FMVSS) are U.S. federal vehicle regulations specifying design, construction, performance, and durability requirements for motor vehicles and regulated automobile safety-related components, systems, and design features.
As required by the federal Highway Safety Act of 1966, all states and territories have adopted substantially similar standards for the vast majority of signs, signals, and road surface markings, based upon the Manual on Uniform Traffic Control Devices from the U.S. Department of Transportation.
The Manual on Uniform Traffic Control Devices for Streets and Highways (usually referred to as the Manual on Uniform Traffic Control Devices, abbreviated MUTCD) is a document issued by the Federal Highway Administration (FHWA) of the United States Department of Transportation (USDOT) to specify the standards by which traffic signs, road surface markings, and signals are designed, installed ...
11th edition of the MUTCD, published December 2023. In the United States, road signs are, for the most part, standardized by federal regulations, most notably in the Manual on Uniform Traffic Control Devices (MUTCD) and its companion volume the Standard Highway Signs (SHS).
Systematic motor-vehicle safety efforts began during the 1960s. In 1960, unintentional injuries caused 93,803 deaths; [5] 41% were associated with motor-vehicle crashes. In 1966, after Congress and the general public had become thoroughly horrified by five years of skyrocketing motor-vehicle-related fatality rates, the enactment of the Highway Safety Act created the National Highway Safety ...
However, these regulations at low-speed collisions did not enhance occupant safety. [34] Vehicle manufacturers have acknowledged the functional equivalence of the UN and U.S. regulations, encouraged developing countries to recognize and accept both, [23] and advocated for equal recognition of both systems in developed countries. [35]
Interstate standards have changed over the years, which has resulted in many older roads not conforming to current standards and an increase of roads not being built to these standards because to do so would be too costly or environmentally unsound. Some roads were grandfathered into the system.
Emissions from all non-road engines are regulated by categories. [49] In the United States, the emission standards for non-road diesel engines are published in the US Code of Federal Regulations, Title 40, Part 89 (40 CFR Part 89). Tier 1–3 Standards were adopted in 1994 and was phased in between 1996 and 2000 for engines over 37 kW (50 hp ...