Integrated Modeling Approach for the Transportation Disadvantaged

Abstract

Transportation models have not been adequate in addressing severe long-term urban transportation problems that transportation disadvantaged groups overwhelmingly encounter, and the negative impacts of transportation on the disadvantaged have not been effectively considered in the modeling studies. Therefore this paper aims to develop a transportation modeling approach in order to understand the travel patterns of the transportation disadvantaged, and help in developing policies to solve the problems of the disadvantaged. Effectiveness of this approach is tested in a pilot study in Aydin, Turkey. After determining disadvantaged groups by a series of spatial and statistical analyses, the approach is integrated with a travel demand model. The model is run for both disadvantaged and nondisadvantaged populations to examine the differences between their travel behaviors. The findings of the pilot study reveal that almost two thirds of the population is disadvantaged, and this modeling approach could be particularly useful in disadvantage-sensitive planning studies to deploy relevant land use and transportation policies for disadvantaged groups.

Sustainable Urban and Transport Development for Transportation Disadvantaged: A Review~!2009-09-21~!2009-12-15~!2010-03-16~!

“…According to Holden [1], the increased distance from urban centre has a positive correlation with energy consumption, therefore, in order to promote a lower energy consumption a compact development with minimised travel distance is favourable. This also applies for TDA populations, as the distance from urban centre increases the level of TDA shows an increase [30].…”

“…Transportation policies, while improving people's mobility, should also convey social equity in sustainability. Further, a sustainable and socially just transportation system ought to provide a fair distribution of transportation services and equal access to employment, housing, education, health services and recreation, and minimise the level of TDA [30].…”

“…Combination of poor accessibility with low levels of mobility and low levels of sociability intensifies TDA [6]. In such circumstances what really matter is to provide more assistance to the most vulnerable groups, poor, elderly and disabled particularly in rapidly aging societies [30].…”

“…For example, Duvarci and Yigitcanlar's study [30] sought integration of TDA analysis with mainstream travel demand models by employing perceptional data, in which TDA could neatly be determined through a cluster analysis focusing on community travel conditions in Aydin, Turkey. Some UK-based studies used accessibility measures to determine TDA [19].…”

Urban Sustainability and Growth Management in South-East Asian City Regions: The Case of Kualalumpur and Hongkong

“…Containmentbased management supported by sustainable urban transport has been one of the most successful compact urbanisation strategies . This strategy attempts to promote the following: compact and contagious urban development patterns with easy access to public services; travel-self containment with reliable public transport options and integrated land use and transport planning, and; preservation of rural and agricultural land and natural resources (Nelson & Duncan, 1995;Duvarci & Yigitcanlar, 2007;Yigitcanlar et al, 2008). Compact urbanisation strategies determine the direction of public infrastructure investment, execute development regulation and shape the nature and intensity of development.…”