407 / 2019-02-27 05:40:04

Evaluating Locational Preference of Activities with the Time/Mode-Dependent Accessibility Using Integrated Spatial Economic Models

PECAS,Accessibility,Time/Mode-Dependent,Integrated Spatial Economic Models,PECAS

全体主题 > Land-use & Transportation modeling

The spatial distribution of activities in a metropolitan area is the main feature of a city’s structure. Today cities are the main center for economic activities where different activities compete for land and space. The continuously growing demand for limited land and space is in-creasing, resulting in positive and negative impacts on urbanization, innovation, and social interactions. Eventually, increasing living costs, pollution, congestion, etc. The travel demand in the City of Wuhan has been rapidly increasing and the current infrastructure is lacking in providing basic accessibility to households, businesses, and firms. The location preference and spatial distribution of activities across the city are subjected to certain physical and regulatory (zoning rules and regulations) constraints. The location choice models are the main building block to examine the urban complexity and in order to match the location preferences of activities. These models can help decision-makers understand the different trade-offs urban agents make in the process of choosing where to locate and understand the urban real estate market. The model estimation changes depending on the data sources used. In this study, the urban and rural household socioeconomic data, including household travel survey and households travel behavior data from year 2008 is used. In this study, 14 types of socioeconomic activities are consideration. The integrated spatial economic models will cover the entire City of Wuhan (including urban and rural areas) and have 690 transportation analysis zones (TAZs). This paper seeks to investigate how integrated spatial economic models are used to evaluate the location preference of activities for households, businesses, and firms in the City of Wuhan. This study applies the developed Wuhan Transport Model (WTM) and PECAS (Production, Exchange, and Consumption Allocation System ) Activity Allocation (AA) module to evaluate time/mode-dependent accessibility using different transport scenarios. A transport demand model is used to forecast transport level of service (time, distance, logsum, and periods) for future years. This will allow us to obtain profiles that highlight the daily needs of accessibility to various activities in the City of Wuhan and identify the impacts of accessibility on activity location preferences. The developed spatial integrated economic models will not only help transport planners to better understand the movements of people but also for retail business and services planners to understand where people would like to consume certain goods and services and where customers come from and also identify the types of locations/places more valuable to house-holds, business and firms.