01516218

Component

Based on objectively measured data on both walking activity and environment, this study uses a zero-inflated negative binomial (ZINB) model to examine the relationship between the built environment and walking. Walking activity is measured through a 7-day assessment of 715 unique study participants living in King County, WA; wearing a global positioning system (GPS) and an accelerometer, and filling in a travel diary. Built environment variables are defined through SmartMaps, which are localized (rasterized) measures of neighborhood- level urban form characteristics. The ZINB model allows for the analysis of two separate but related phenomena: first, differentiating between locations where walking activity does or does not occur and examining built environment attributes associated any walking; and second, estimating the built environment characteristics that are likely to increase the amount of observed walking activity. Model results showed weak associations between the built environment and walking. However, whereas any walking activity was significantly related to the number of destinations in the neighborhood and street intersection density, amounts of walking was associated with neighborhood residential density. The study is first to offer insights into the modeling of GPS-based walking activity for large populations.

This paper was sponsored by TRB committee ANF10 Pedestrians.

01503729

14-5591

English

16p

2014

Transportation Research Board 93rd Annual Meeting

Digital/other

Figures; References; Tables

Binomial distributions; Built environment; Global Positioning System; Mathematical models; Neighborhoods; Population density; Residential areas; Travel diaries; Urban design; Walking

Residential density

King County (Washington)

Pedestrians and Bicyclists; Planning and Forecasting; I72: Traffic and Transport Planning

Transportation Research Board Annual Meeting 2014 Paper #14-5591

TRIS, TRB, ATRI

Jan 27 2014 3:57PM