TRB is sponsoring the Data for Goods Movement Impacts on Air Quality Workshop on March 17-18, 2008, in Irvine, California. The workshop will explore the data sources needed to measure the impact of freight flows on air quality. The workshop will focus on California as an example setting, but the findings about data and issues will have widespread applicability. Authors wishing to have papers considered as part of the conference program must submit their abstracts by December 10, 2007.