The impact of residential growth patterns on vehicle travel and pollutant emissions

Deb Niemeier, Song Bai, Susan L. Handy
2011 Journal of Transport and Land Use  
In light of the increasing reliance on compact growth as a fundamental strategy for reducing vehicle emissions, it is important to better understand how land use-transportation interactions in uence the production of mobile source emissions. To date, research ndings have produced mixed conclusions as to whether compact development as a strategy for accommodating urban growth signi cantly reduces vehicle travel and, by extension, mitigates environmental impacts, particularly in the area of air
more » ... n the area of air quality. Using an integrated simulation approach coupled with long-term land development scenarios, we conducted an assessment of the impacts of different long-term primarily residential growth patterns on vehicle travel and pollutant emissions in the eight counties of the San Joaquin Valley region in central California. e results suggest that higher residential densities result in slightly decreased regional vehicle travel and emissions. Our comparative analysis also suggests that the effects of future land use growth patterns may vary among different spatial areas. at is, compact growth strategies can result in signi cantly more travel and emissions changes in already fairly urbanized counties. is work indicates a minimum density threshold of approximately 1500 households per square mile is necessary to achieve commensurate emissions reductions relative to existing densities.
doi:10.5198/jtlu.v4i3.226 fatcat:nxzpaslnmbfirdymdvupjzzmuy