Readers are referred to Handy (1996a), Badoe and Miller (2000), Crane (2000), Ewing and Cervero (2001) and Boarnet and Crane (2001) for general discussion of the links between urban form and travel behavior, to Centre for Spatial Analysis - Working Paper Series - 4 - Urban Form and Social Exclusion: An Exploratory Analysis in a U. S. Setting D. M. Scott and M. W. Horner Horner (2004) for a recent [...] Although the evidence is mixed with regards to the relationship between urban form and travel behavior, Ewing and Cervero (2001) have produced several useful generalizations of the literature that may assist in linking social exclusion to this body of research. [...] This database not only contains the locations and names of opportunities in the seven-county study area, but it also contains information on the places themselves such as a six-digit SIC code, which defines the type of economic activity taking place at the opportunity, and a numerical category for number of employees. [...] The geocoded trips from the trip diary survey were matched to the SIC codes in the urban opportunities database, providing information necessary to compute the gravity measure of accessibility described in the next section. [...] Centre for Spatial Analysis - Working Paper Series - 6 - Urban Form and Social Exclusion: An Exploratory Analysis in a U. S. Setting D. M. Scott and M. W. Horner Of the total number of opportunities found in the database, only 20,133 were used in the analysis.