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In addition, any vehicle in one of the 48 Safety and Emission counties that has a Gross Vehicle Weight Rating (GVWR) greater than 8,500 pounds only requires a Safety inspection. [2] As of April 1, 2015 North Carolina General Statute 20-183.2 exempts certain vehicles within the most recent three model years, and having fewer than 70,000 miles on ...
Diesel trucks over 8500 lbs. GVWR are required to have a diesel emissions inspection if they are registered in the NYC metropolitan area. North Carolina – annually, required for vehicles in 19 (out of 100) counties, for vehicles newer than 20 years old. Effective November 1, 2008, no inspection decal is issued upon passing.
Two sets, or tiers, of emission standards for light-duty vehicles in the United States were defined as a result of the Clean Air Act Amendments of 1990. The Tier I standard was adopted in 1991 and was phased in from 1994 to 1997. Tier II standards were phased in from 2004 to 2009. Within the Tier II ranking, there is a subranking ranging from ...
The N.C. Division of Air Quality will ask the U.S. EPA to approve a plan to end annual emissions inspections in 18 of the 19 counties where it is still required.
The concept of vehicle-specific power (VSP) is a formalism used in the evaluation of vehicle emissions. The idea was first developed by J. L. Jiménez (Jiménez 1998) at the Massachusetts Institute of Technology. [1][2] Informally, it is the sum of the loads resulting from aerodynamic drag, acceleration, rolling resistance, and hill climbing ...
An inspection sticker from the Commonwealth of Massachusetts. A Warrant of Fitness certificate issued to vehicles in New Zealand. Vehicle inspection is a procedure mandated by national or subnational governments in many countries, in which a vehicle is inspected to ensure that it conforms to regulations governing safety, emissions, or both.
The adoption of plug-in electric vehicles in the United States is supported by the American federal government, and several states and local governments. As of December 2023, cumulative sales in the U.S. totaled 4,7 million plug-in electric cars since 2010, led by all-electric cars. [ 4 ] Sales totaled 1,402,371 units in 2023, with a market ...
Vehicle emissions control is the study of reducing the emissions produced by motor vehicles, especially internal combustion engines. The primary emissions studied include hydrocarbons, volatile organic compounds, carbon monoxide, carbon dioxide, nitrogen oxides, particulate matter, and sulfur oxides. Starting in the 1950s and 1960s, various ...