Abstract:In recent years, land use and transportation planning priorities have shifted from issues of mobility to focus on the capacity of neighbourhoods to provide opportunities to live, work, shop, and socialize at the local scale. This research explores a sample of households from Montreal, Quebec, Canada, that engaged in multiple trip purposes on the same day and measures the effects of household, individual, and trip characteristics on their travel behavior, especially the localization of these trips. A new measure to understand the spatial dispersal of actual activity space of each household is proposed while controlling for distance traveled. The findings show that levels of regional and local accessibility have different effects on this new index. Furthermore, these effects vary with household size and sociodemographic factors. This study could help transportation professionals who are aiming to develop policies to localize household travel patterns through land use and transportation coordination at the neighborhood and regional scale. As wealthier car-owning households are seen to exhibit more dispersed travel behavior regardless of accessibility measures, implications for social equity and exclusion are also explored.Copyright 2012 Kevin Manaugh and Ahmed El-Geneidy. Licensed under the Creative Commons Attribution -NonCommercial License 3.0.
IntroductionIn recent years, land use and transportation planning priorities have shifted away from issues of mobility to focus on the capacity of a neighbourhood to provide opportunities to live, work, and socialize at the local scale. As planning for accessibility is seen to have more sustainable outcomes, measures of accessibility are gaining popularity as comprehensive performance measures of the interaction between land use and transportation systems (El-Geneidy and Levinson 2006;Grengs, Levine et al. 2010). By favouring shorter travel distances and active modes of transportation, and by influencing household location choices, accessibility can also be used as a sustainability indicator and as a goal in land-use planning. Rather than emphasizing increased road capacity and travel speeds, transportation planners are looking for solutions to increase localized and short-distance travel. However, there is a potential downside to this framework. Often those whose travel patterns are confined to their local area display this behavior not by choice but because of mobility limitations. In fact, many other reasons may limit individual and household travel patterns, including fear or lack of knowledge about certain areas or destinations and poor or unreliable transit service. Given identical levels of neighbourhood and regional accessibility, we hypothesize that households of differing socioeconomic, attitudinal, and personal preferences might display vastly dissimilar activity spaces. Furthermore, much previous research to understand "local" travel has focused too heavily on either distance traveled or an over-simplified measurement of household activity space. To ex...