ResumenLa presente investigación aplica técnicas geoestadísticas para explicar el nivel de cobertura que presenta la infraestructura de transporte de la ciudad de Quibdó en relación a los Nodos de Actividad Primaria (NAP), los cuales son aquellos que permiten suplir las necesidades diarias mínimas de una población: Salud, Educación, Universitarios y Seguridad. La metodología se basa en un análisis de accesibilidad a estos nodos mediante el cálculo de la Accesibilidad Media Integral que ofrece la red de infraestructura. El objetivo es analizar la ubicación de los NAP a partir de su relación con las características operativas de la red de infraestructura del transporte. Se obtuvo que los NAP que mejores características de cobertura espacial poseen son Educativos, seguidos por los NAP Salud y Universitarios, los cuales reportan niveles de cobertura semejantes de las variables población, número de viviendas y área; mientras que los nodos que reportan una cobertura más deficiente son los de Seguridad. Palabras clave: accesibilidad; análisis de redes; cobertura; equipamientos; infraestructura de transporte Urban Coverage Analysis of the Primary Activity Nodes by use of a Territorial Accessibility Study in Quibdó (Colombia) AbstractThis research applies geostatistical techniques to explain the level of coverage presented by the transport infrastructure of the city of Quibdó in relation to the Primary Activity Nodes (PAN), which are those that allow meeting the minimum daily needs of a population: Health, Education, University studies and Security. The methodology is based on an analysis of accessibility to these nodes through the calculation of the Integral Mean Accessibility offered by the infrastructure network. The objective is to analyze the location of the PANs based on their relationship with the operational characteristics of the transport infrastructure network. It was obtained that the PANs that have the best spatial coverage characteristics are Educational, followed by the PAN Health and PAN Universities, which report similar levels of coverage of the variables population, number of households and area. While those nodes that report a poorer coverage are those of Security.

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Palabras clave: autopista norte, desarrollo urbano, intersección vial, movilidad urbana.

<p>Two residents of southwest London living either side of the River Thames, Richard Woolf (architect) and Mark Wing (creative strategist) continue to drive an initiative to convert the community’s ‘need’ for a footbridge into a ‘desire’ to see it realised. Described in their initial paper which Mark delivered at Footbridge 2014 in London, the aim is to build a cycle and pedestrian bridge within the London Borough of Richmond upon Thames to connect two sides of the River Thames, separated by only 100m of water, namely;</p> <ul><li>On the east side (Surrey station) is Ham Lands – inaccessible, with leisure walks, nature reserves, heritage sites, polo grounds and sailing clubs, but with poor access to transport links. <li>On the west side (Middlesex station) is Strawberry Hill and Twickenham – densely populated, served well by major transport systems, with busy roads and places for education and work, but limited access to outdoor amenity space.</ul>