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首页> 外文会议>Air Waste Management Association's Annual conference Exhibition >VMT Growth Rates in the U.S. and their Effects on NO_x and VOC Emissions
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VMT Growth Rates in the U.S. and their Effects on NO_x and VOC Emissions

机译：美国的VMT增长率及其对NO_X和VOC排放的影响

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The relative importance of on-road emissions as a participant in ozone formation depends in large part on the total vehicle miles traveled (VMT) per day in a given area. In the future, the relative importance of on-road emissions will be affected by the growth in VMT, which results in increased emissions, and the implementation of motor vehicle emission controls, which reduce the emissions associated with each mile of travel. This paper evaluates the combined effects of VMT growth and recently promulgated vehicle emission standards on NO_x and VOC emissions for conditions that are representative of Tennessee and typical of many areas within the southeastern United States. The recently promulgated regulations are projected to provide significant reductions in the NO_x emissions from on-road mobile sources as these standards are phased into the vehicle fleet during the next ten years. For areas with VMT growth rates of less than 4%, the benefits will likely result in less emissions out to at least 2030. While intermediate-year reductions in emissions will occur for growth rates greater than 4%, the long term effect of these higher than average growth rates will result in emissions exceeding current levels in the 2020-2030 timeframe. The new regulations will have a minor effect on VOC emissions. Areas with VMT growth rates of 2% or less will likely not exceed current emission levels even out to the year 2030. For growth rates in the 2 to 4% range, the emissions are projected to decrease in the near term. VOC emissions are projected to exceed the current emission levels in the 2010 to 2030 time period, depending on the growth rate. Growth rates of greater than 4% are estimated to result in emission increases each year starting with the current year. The long-term maintenance of VOC emissions at current levels will require either implementation of additional control technologies or a reduction in the VMT growth rates in those areas where growth rates currently exceed approximately 2%.
机译：道路排放作为臭氧形成的参与者的相对重要性在很大程度上取决于给定区域每天行驶（VMT）的总车里。在未来，通道排放的相对重要性将受到VMT增长的影响，这导致排放量增加，以及机动车排放控制的实施，减少了与每一英里的旅行相关的排放。本文评估了VMT增长的综合影响，最近颁布了NO_X和VOC排放标准的田纳西州代表的条件，以及典型的典型地区。最近颁布的规定预计将在接下来的十年中逐步逐步进入车队的路上移动来源的NO_X排放量大减少。对于小于4％VMT的增长率方面，收益将有可能导致了至少2030年排放量较少而中间一年减少排放将对经济增长率出现大于4％，这些较高的长期效果比平均增长率将导致2020-2030时间范围内超过当前水平的排放量。新法规将对VOC排放产生轻微影响。具有2％或更低的VMT增长率的区域可能不会超过2030年的当前排放水平。对于2至4％的增长率，排放量将减少近期减少。根据增长率，将投射vc排放量超过2010年至2030年期间的当前排放水平。估计增长率大于4％，导致每年从本年度开始的排放量增加。目前水平的VOC排放的长期维护将需要实施额外的控制技术或增长率目前超过约2％的区域的VMT生长率的减少。

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