Authors

Suzanne Mavoa

Document Type

Conference Paper

Publication Date

2007

Subject Area

Modes of Transport - Car - Driving, Modes of Transport - Pedestrian

Abstract

In New Zealand, 25% of the total CO2 emissions are from household transport, and emission levels are increasing at a greater rate than the population (Walton, n.d.). The Reduced CO2 from sustainable household travel research program aims to assist in sustaining a reversal in this trend. The program regards CO2 emissions as "a direct outcome of fuel use" and investigates transportation demand management (TDM), and transportation supply management (TSM) strategies that will assist in reducing fuel use and consequent C02 emissions (Huisman, 2005; Walton, nd.). However, any transport management strategies designed to reduce CO2 emissions are likely to have social impacts. Therefore, one of the objectives of this research program is to access the potential social impact of reduced fuel use from changes in household transport. The basic premise taken by this research is that the social impact of reduced CO2 emissions from household travel can be assessed by measuring associated changes in access to the resources and facilities that form an integral part of the social environment, and then to assess how this access changes under different transport mode scenarios. This paper reports on the development of a household-level GIS model that provides a measure of accessibility for different types of households under a given time budget and under different transport mode scenarios. First, different measures of accessibility are reviewed. Next, the operational definition of accessibility underlying the GIS model is described. Finally, the paper reports on the implementation of the model and discusses current progress.