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Soltani, Ali
- The Influence of Urban Physical form on Trip Generation, Evidence from Metropolitan Shiraz, Iran
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PDF Views:267
Authors
Affiliations
1 Dept. of Urban Planning, Faculty of Art and Architecture, Shiraz University, Goldasht Maliabad St, Shiraz, IR
1 Dept. of Urban Planning, Faculty of Art and Architecture, Shiraz University, Goldasht Maliabad St, Shiraz, IR
Source
Indian Journal of Science and Technology, Vol 4, No 9 (2011), Pagination: 1168-1174Abstract
This paper aims to examine the relationship between urban form and personal daily trips between urban zones across Metropolitan Shiraz, Iran. To cope with collinearity nature of trip generation determinants and also multicollinearity in model estimation, component principal analysis (PCA) was employed to identify latent dimensions of trip generation. Then, a multiple regression model with continuous independent variables was developed to measure the effect of each individual variable on entire trips generated among urban zones. The explanatory variables included both physical characteristics of the metropolitan (land use diversity, density, suburbanization, connectivity, and accessibility to public transport), and socio-economic characteristics of trip makers (age, employment status, education, migration, property value) aggregated on the urban zones scale. The empirical findings, based on ordinary least squares (OLS) estimation of 2006 data for 47 traffic area zones (TAZ) with total population over 1.1 million indicated that socio-economic characteristics were the most positive determinants of trip generation among the zones. On contrast, suburbanization (distance from central business district (CBD)) and distance from public transport facilities were negatively associated with the trip generation. However, other physical factors such as land use mix and network connectivity were found not important in influencing intra-zone trip generation, probably influencing inter-zone trip generation instead. In fact, improving local accessibility may reduce the need to intra-zonal travel, rather may also increase the tendency to travel within the neighborhood area.Keywords
Urban Transport, Urban Planning, Trip Generation, Metropolitan Shiraz, IranReferences
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Abstract Views :386 |
PDF Views:85
Authors
Affiliations
1 Department of Urban Planning, Faculty of Art and Architecture, University of Guilan, Rasht, IR
2 Department of Urban Planning, Faculty of Art and Architecture, Shiraz University, Shiraz
3 Lecture of Art and Architecture Faculty, University of Guilan, Rasht, IR
1 Department of Urban Planning, Faculty of Art and Architecture, University of Guilan, Rasht, IR
2 Department of Urban Planning, Faculty of Art and Architecture, Shiraz University, Shiraz
3 Lecture of Art and Architecture Faculty, University of Guilan, Rasht, IR
Source
Indian Journal of Science and Technology, Vol 4, No 9 (2011), Pagination: 1175-1178Abstract
Achieving a balanced distribution of population and activities over space is one of the critical goals of spatial planning profession. This paper reviews the status of this issue for the North Region of Iran including provinces of Mazandaran, Giulan and Golestan. The study applied two well-known methods including entropy and elasticity for measuring the extent of regional balance of population distribution throughout the study area. The results showed that the disorder of urban system has been increased dramatically along with fast population increase. Three capital cities of the region have experienced focal concentration whereas small cities have encountered with stagnation in population growth. Those cities with 50 thousand people and over have showed higher tendency to absorb further population. These trends have resulted in intensifying irregularity of urban system and emerging of new megacities.Keywords
Urban System, North Region of Iran, Elasticity, EntropyReferences
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