Transitional edges: a conceptual framework for socio-spatial understanding of urban street edges

This paper develops a conceptual framework of transitional edges to enhance understanding of the social value of urban street edges. Building from theoretical principles associated with socio-spatial understandings of urban realms, transitional edges conceptualise urban street edges as integrations of their social, spatial and material dimensions. This is captured in a tripartite structure highlighting socially relevant properties of transitional edges that act along them (extent), across them (laterality) and within them (locality). This provides a foundation for developing an approach to practical application based on identification and evaluation of transitional edges as assemblages of territorialised segments. To progress this, a developmental study of a length of Sharrow Vale Road in Sheffield, UK was carried out to explore how theoretical principles of the transitional edge conceptual framework could be translated for practical application. This reveals the potential of transitional edges to highlight that locally focused small scale change and adaptation may be significant to the social potential of urban street edges. As a result, the current study sets out theoretical and practical foundations for a conceptual framework of transitional edges which will support development of an extensive funded programme of transitional edge case study research.