Faculty of Architecture and Design

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Browsing by Author "Argın, G."

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    The effects of street network configuration and street-level urban design on route choice behaviour: an analysis of elementary school students walking to/from school in istanbul
    (Instituto Superior Tecnico, Departamento de Engenharia Civil, Arquitetura e Georrecursos, 2017) Argın, G.; Yesiltepe, D.; Torun, Ayşe Özbil; Interior Architecture and Environmental Design; Heitor, T.; Serra, M.; Silva, J. P.; Bacharel, M.; Silva, L. C. da; ÖZBİL TORUN, Ayşe
    This paper explores the association between the built environment, measured through street network configuration and street-level urban design, and route choice of children walking to/from school. The aim is to understand the extent to which student's actual route selections correspond with metric shortest routes and the role of spatial factors in explaining route choice in utilitarian walking. Within this context, randomly selected students (ages 12-14) from five elementary schools in Istanbul, Turkey, were asked to draw their routes walking between home and school. Each student's route choice was modelled within a GIS database and metrically shortest routes between origins and destinations were identified by using the 'network analyst' tool. Street network configuration of the entire system was evaluated by using angular segment integration and choice analyses implemented in Depthmap as well as metric and directional reach implemented in GIS. Street-level urban design characteristics of the streets, including ground floor attractions, prevalence and width of sidewalks, street-level topography, street width (indicating street hierarchy), and existence of signalling/crossings, were evaluated through detailed field surveys and high quality satellite images. The preliminary findings of this study imply that the configuration measures of street network may prove to be important variables for the description and modulation of human spatial behaviour in urban environments. More importantly, directional accessibility appears to play an important role as metric accessibility in route choice behaviour. However; the detailed analysis of selected routes indicates that the amount of ground floor attractions as well as certain streetlevel urban design qualities, such as sidewalk width, seem to be related to the preference of certain streets over and above others. This study contributes to the literature by broadening our understanding of the environmental attributes associated with children's navigation choices in utilitarian walking. Findings augment the knowledgebase that supports urban navigation by emphasizing the contribution of the spatial structure of the street network and the impacts of urban design qualities of the street environment.
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    Modeling walkability: The efects of street design, street-network confguration and land-use on pedestrian movement
    (ITU Journal of Faculty of Architecture, 2015-11) Torun, Ayşe Özbil; Yeşiltepe, D.; Argın, G.; Interior Architecture and Environmental Design; ÖZBİL TORUN, Ayşe
    Tis study explores the relative association of street design –local qualities of street environment–, street network confguration –spatial structure of the urban grid–, and land use patterns with the distribution of pedestrian fows. Te aim is to better understand the extent to which systematically measured street-level urban design qualities and objectively measured street network confguration are related to pedestrian movement, controlling for land use. 20 2kmx2km areas in Istanbul were studied in order to establish correlations between street design, street confguration and densities of pedestrian movement. Pedestrian data were collected on selected road segments within the areas. Same road segments were characterized through detailed feld-surveys in terms of aesthetic qualities, signage, sidewalk design, pedestrian crossings/trafc lights, ground foor uses as well as GIS-based hosing plot-level (parcel-level) land use density and street-level topography. Street network confgurations within the areas were evaluated using angular segment analysis (Integration and Choice) as well as two segment-based connectivity measures (Metric and Directional Reach). Linear models were developed to investigate the relationships among street design, street network confguration, land use, and walking behavior. Tis study contributes to the literature by ofering insights into the comparative roles of urban design qualities of the street environment and street network layout on pedestrian movement. Preliminary fndings imply that notwithstanding the signifcance of certain aspects of the street environment that relate to local urban design qualities, the overall spatial configuration of street network may prove to be a signifcant variable for the description and modulation of pedestrian movement.