A growing number of epidemiological studies conducted throughout the world have identified an increase in occurrence of adverse health effects for populations living near major roads. In addition, several air quality studies have identified increased concentration levels of certain pollutants near high volume roadways. However, questions remain on the spatial extent of elevated concentrations near the road, and the factors affecting concentration variability, including traffic activity (volume, fleet mix, speed, etc.), environmental conditions, and land development. In the U.S., federal agencies have been under increasing pressure to evaluate potential air quality and health impacts related to transportation systems. This presentation provides a summary of health effect and air quality studies that have been conducted near large roadways. The presentation also describes research plans being proposed by the Federal Highway Administration (FHWA) and the U.S. Environmental Protection Agency (EPA) to address future research projects related to the FHWA's US95 settlement agreement. These studies will measure criteria and air toxic pollutant concentrations near highways, including benzene, 1,3-butadiene, acetaldehyde, acrolein, formaldehyde, and particulate matter. In addition, meteorological and highway vehicle data will be collected to identify the relationship of these factors to the ambient air concentrations. The study will be conducted at three different geographic sites in the United States to investigate regional (climate, fuel, vehicle fleet differences), seasonal, and land use effects on near road pollutant impacts. Preliminary results from a pilot study conducted in Raleigh, North Carolina during the summer of 2006 will also be presented. This information will be presented to provide information on the impacts of vehicle emissions on near road air quality, as well as the development of control strategies to mitigate the influence of vehicle emissions on the near road microenvironment.
Traffic Emission Impacts on Air Quality near Large Roadways
Transportation Land Use, Planning, and Air Quality Congress 2007 ; 2007 ; Orlando, Florida, United States
2008-05-15
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Traffic Emission Impacts on Air Quality near Large Roadways
British Library Conference Proceedings | 2008
|Engineering Index Backfile | 1931
|Pavement Preservation on High-Traffic-Volume Roadways
Online Contents | 2011
|Traffic Control Help for Low-Volume Roadways
British Library Online Contents | 1997
Particulate matter hot spots near roadways
Tema Archiv | 1998
|