IOP Conference Series: Earth and Environmental Science, 2020
Motorways and railways increase regional accessibility but can at the same time reduce local acce... more Motorways and railways increase regional accessibility but can at the same time reduce local accessibility by creating barriers in pedestrian and bicycle networks. This can influence several SDGs, such as SDG 5 (gender equality), 10 (reduced inequalities), and 11 (sustainable cities and communities). This paper presents some first principles of how quantitative indicators of direct barrier effects can be adapted in order to address specific social groups. To demonstrate this, the indicator ‘Choice’, from a set of four indicators previously developed, was adapted to assess accessibility by children to parks, and waterside and leisure facilities. The indicator was applied to a case in Gothenburg, Sweden, where a GIS-based analysis measured changes in barrier effects brought about by hypothetically placing an existing motorway and railway in tunnels. The results demonstrate how such local accessibility indicators can be adapted to make them relevant for impact assessments of infrastruc...
Transportation Research Part D: Transport and Environment, 2020
Abstract Transport infrastructure can create efficient connections in traffic systems, yet it can... more Abstract Transport infrastructure can create efficient connections in traffic systems, yet it can also create barriers to movement on a local scale. In transport infrastructure projects there is a need for methods to quantify these barrier effects – also called severance – to assess their impacts on social inclusion, health and viability of businesses. This paper proposes four local accessibility indicators to measure direct barrier effects: Travel time, Choice, Catchment and Service efficiency. The indicators are tested in a case study where the consequences of placing a motorway and a railway in tunnels are assessed. The results show how local accessibility is affected in non-linear patterns. The paper contributes to accessibility literature by introducing direct barrier effects as an applied case of local accessibility, and demonstrates the potential of those indicators to quantify barrier effects. Finally, it offers accessibility as a theoretical framework for further developing theories on barrier effects.
Transport infrastructure such as railways, motorways and arterial roads increases regional access... more Transport infrastructure such as railways, motorways and arterial roads increases regional accessibility for motorised transport but simultaneously can create barriers in local street networks that can decrease accessibility for pedestrians and cyclists. Although several tools for an objective assessment of these barrier effects have been developed, their use in practice is limited; impact assessments are instead based on subjective descriptions. This article reviews the literature on barrier effects of the last 60 years and aims to offer guidance for the use of objective methods of assessment of barrier effects. The first contribution is a conceptual model for the barrier effects of transport infrastructure and their determinants. The second contribution is an overview of tools for the assessment of barrier effects. We conclude that a multi-disciplinary approach is required, supported by the conceptual model and the overview of assessment tools. Investments in transport infrastruct...
Cities can be characterized as distributions of accessibility. Two elements in the urban fabric t... more Cities can be characterized as distributions of accessibility. Two elements in the urban fabric that influence this distribution of accessibility are motorways and railways. These are powerful connectors in urban traffic systems, but can also create strong barriers on a local scale. Based on a literature review, the negative effectsalso called severance-of these barriers on social inclusion, health, and access to workplaces are described. Furthermore, it is pointed out that barrier effects are determined by three elements: transport infrastructure, built environment and people's wishes and needs. Two new morphological indicators are presented with which some of the barrier effects identified in the literature review can be quantified. One indicator is related to proximity to facilities, measured by network distance. The other relates to accessible offer of facilities, measured as the number of facilities within a given metric radius from each residential address. The indicators are tested in a case study in Gothenburg, Sweden, where a four-lane motorway and a railway track form substantial restrictions on the urban development of a former harbour area in the centre of the city. In the case study the consequences of placing the infrastructure in tunnels is assessed. The analyses show how the increases in proximity to facilities and in accessible offer of facilities are distributed in non-linear patterns. These results demonstrate the importance of taking into account transport infrastructure, built environment and people's wishes and needs when assessing barrier effects. The case study indicates the potential of the proposed indicators for inclusion in a method for the quantification of barrier effects.
Transport infrastructure such as railways, motorways and arterial roads increases regional access... more Transport infrastructure such as railways, motorways and arterial roads increases regional accessibility for motorised transport but simultaneously can create barriers in local street networks that can decrease accessibility for pedestrians and cyclists. Although several tools for an objective assessment of these barrier effects have been developed, their use in practice is limited; impact assessments are instead based on subjective descriptions. This article reviews the literature on barrier effects of the last 60 years and aims to offer guidance for the use of objective methods of assessment of barrier effects. The first contribution is a conceptual model for the barrier effects of transport infrastructure and their determinants. The second contribution is an overview of tools for the assessment of barrier effects. We conclude that a multi-disciplinary approach is required, supported by the conceptual model and the overview of assessment tools. Investments in transport infrastruct...
Cities can be characterized as distributions of accessibility. Two elements in the urban fabric t... more Cities can be characterized as distributions of accessibility. Two elements in the urban fabric that influence this distribution of accessibility are motorways and railways. These are powerful connectors in urban traffic systems, but can also create strong barriers on a local scale. Based on a literature review, the negative effectsalso called severance-of these barriers on social inclusion, health, and access to workplaces are described. Furthermore, it is pointed out that barrier effects are determined by three elements: transport infrastructure, built environment and people's wishes and needs. Two new morphological indicators are presented with which some of the barrier effects identified in the literature review can be quantified. One indicator is related to proximity to facilities, measured by network distance. The other relates to accessible offer of facilities, measured as the number of facilities within a given metric radius from each residential address. The indicators are tested in a case study in Gothenburg, Sweden, where a four-lane motorway and a railway track form substantial restrictions on the urban development of a former harbour area in the centre of the city. In the case study the consequences of placing the infrastructure in tunnels is assessed. The analyses show how the increases in proximity to facilities and in accessible offer of facilities are distributed in non-linear patterns. These results demonstrate the importance of taking into account transport infrastructure, built environment and people's wishes and needs when assessing barrier effects. The case study indicates the potential of the proposed indicators for inclusion in a method for the quantification of barrier effects.
Cities can be characterized as distributions of accessibility. Two elements in the urban fabric t... more Cities can be characterized as distributions of accessibility. Two elements in the urban fabric that influence this distribution of accessibility are motorways and railways. These are powerful connectors in urban traffic systems, but can also create strong barriers on a local scale. Based on a literature review, the negative effectsalso called severance-of these barriers on social inclusion, health, and access to workplaces are described. Furthermore, it is pointed out that barrier effects are determined by three elements: transport infrastructure, built environment and people's wishes and needs. Two new morphological indicators are presented with which some of the barrier effects identified in the literature review can be quantified. One indicator is related to proximity to facilities, measured by network distance. The other relates to accessible offer of facilities, measured as the number of facilities within a given metric radius from each residential address. The indicators are tested in a case study in Gothenburg, Sweden, where a four-lane motorway and a railway track form substantial restrictions on the urban development of a former harbour area in the centre of the city. In the case study the consequences of placing the infrastructure in tunnels is assessed. The analyses show how the increases in proximity to facilities and in accessible offer of facilities are distributed in non-linear patterns. These results demonstrate the importance of taking into account transport infrastructure, built environment and people's wishes and needs when assessing barrier effects. The case study indicates the potential of the proposed indicators for inclusion in a method for the quantification of barrier effects.
IOP Conf. Series: Earth and Environmental Science, 2020
Motorways and railways increase regional accessibility but can at the same time reduce local acce... more Motorways and railways increase regional accessibility but can at the same time reduce local accessibility by creating barriers in pedestrian and bicycle networks. This can influence several SDGs, such as SDG 5 (gender equality), 10 (reduced inequalities), and 11 (sustainable cities and communities). This paper presents some first principles of how quantitative indicators of direct barrier effects can be adapted in order to address specific social groups. To demonstrate this, the indicator 'Choice', from a set of four indicators previously developed, was adapted to assess accessibility by children to parks, and waterside and leisure facilities. The indicator was applied to a case in Gothenburg, Sweden, where a GIS-based analysis measured changes in barrier effects brought about by hypothetically placing an existing motorway and railway in tunnels. The results demonstrate how such local accessibility indicators can be adapted to make them relevant for impact assessments of infrastructure projects, and thus enable the measurement of compliance with social sustainability targets in transportation infrastructure planning.
Transport infrastructure can create efficient connections in traffic systems, yet it can also cre... more Transport infrastructure can create efficient connections in traffic systems, yet it can also create barriers to movement on a local scale. In transport infrastructure projects there is a need for methods to quantify these barrier effects-also called severance-to assess their impacts on social inclusion, health and viability of businesses. This paper proposes four local accessibility indicators to measure direct barrier effects: Travel time, Choice, Catchment and Service efficiency. The indicators are tested in a case study where the consequences of placing a motorway and a railway in tunnels are assessed. The results show how local accessibility is affected in non-linear patterns. The paper contributes to accessibility literature by introducing direct barrier effects as an applied case of local accessibility, and demonstrates the potential of those indicators to quantify barrier effects. Finally, it offers accessibility as a theoretical framework for further developing theories on barrier effects.
Cities can be characterized as distributions of accessibility. Two elements in the urban fabric t... more Cities can be characterized as distributions of accessibility. Two elements in the urban fabric that influence this distribution of accessibility are motorways and railways. These are powerful connectors in urban traffic systems but can also create strong barriers on a local scale. Based on a literature review, the negative effects of these barriers-also called severance-on social inclusion, health, and access to workplaces are described. Furthermore, it is pointed out that barrier effects are determined by three elements: transport infrastructure, built environment and people's wishes and needs. Two morphological indicators are presented with which some of the barrier effects identified in the literature review can be quantified. One indicator is related to proximity to facilities, measured by network distance. The other relates to accessible offer of facilities, measured as the number of facilities within a given metric radius from each residential address. The indicators are demonstrated in a case study in Gothenburg, Sweden, where a four-lane motorway and railway tracks form substantial restrictions on the urban development of a former harbor area in the center of the city. In the case study the consequences of placing the infrastructure in tunnels is assessed. The analyses show how the increases in proximity to facilities and in accessible offer of facilities are spatially distributed in non-linear patterns. These results demonstrate the importance of taking into account transport infrastructure, built environment and people's wishes and needs when assessing barrier effects. The case study indicates the potential of the proposed indicators for inclusion in a method for the quantification of barrier effects. Abstract Cities can be characterized as distributions of accessibility. Two elements in the urban fabric that influence this distribution of accessibility are motorways and railways. These are powerful connectors in urban traffic systems but can also create strong barriers on a local scale. Based on a literature review, the negative effects of these barriers-also called severance-on social inclusion, health, and access to workplaces are described. Furthermore, it is pointed out that barrier effects are determined by three elements: transport infrastructure, built environment and people's wishes and needs. Two morphological indicators are presented with which some of the barrier effects identified in the literature review can be quantified. One indicator is related to proximity to facilities, measured by network distance. The other relates to accessible offer of facilities, measured as the number of facilities within a given metric radius from each residential address. The indicators are demonstrated in a case study in Gothenburg, Sweden, where a four-lane motorway and railway tracks form substantial restrictions on the urban development of a former harbor area in the center of the city. In the case study the consequences of placing the infrastructure in tunnels is assessed. The analyses show how the increases in proximity to facilities and in accessible offer of facilities are spatially distributed in non-linear patterns. These results demonstrate the importance of taking into account transport infrastructure, built environment and people's wishes and needs when assessing barrier effects. The case study indicates the potential of the proposed indicators for inclusion in a method for the quantification of barrier effects.
Transportation Research Part D Transport and Environment, 2020
Transport infrastructure can create efficient connections in traffic systems, yet it can also cre... more Transport infrastructure can create efficient connections in traffic systems, yet it can also create barriers to movement on a local scale. In transport infrastructure projects there is a need for methods to quantify these barrier effects – also called severance – to assess their impacts on social inclusion, health and viability of businesses. This paper proposes four local accessibility indicators to measure direct barrier effects: Travel time, Choice, Catchment and Service efficiency. The indicators are tested in a case study where the consequences of placing a motorway and a railway in tunnels are assessed. The results show how local accessibility is affected in non-linear patterns. The paper contributes to accessibility literature by introducing direct barrier effects as an applied case of local accessibility, and demonstrates the potential of those indicators to quantify barrier effects. Finally, it offers accessibility as a theoretical framework for further developing theories on barrier effects.
IOP Conference Series: Earth and Environmental Science, 2020
Motorways and railways increase regional accessibility but can at the same time reduce local acce... more Motorways and railways increase regional accessibility but can at the same time reduce local accessibility by creating barriers in pedestrian and bicycle networks. This can influence several SDGs, such as SDG 5 (gender equality), 10 (reduced inequalities), and 11 (sustainable cities and communities). This paper presents some first principles of how quantitative indicators of direct barrier effects can be adapted in order to address specific social groups. To demonstrate this, the indicator ‘Choice’, from a set of four indicators previously developed, was adapted to assess accessibility by children to parks, and waterside and leisure facilities. The indicator was applied to a case in Gothenburg, Sweden, where a GIS-based analysis measured changes in barrier effects brought about by hypothetically placing an existing motorway and railway in tunnels. The results demonstrate how such local accessibility indicators can be adapted to make them relevant for impact assessments of infrastruc...
Transportation Research Part D: Transport and Environment, 2020
Abstract Transport infrastructure can create efficient connections in traffic systems, yet it can... more Abstract Transport infrastructure can create efficient connections in traffic systems, yet it can also create barriers to movement on a local scale. In transport infrastructure projects there is a need for methods to quantify these barrier effects – also called severance – to assess their impacts on social inclusion, health and viability of businesses. This paper proposes four local accessibility indicators to measure direct barrier effects: Travel time, Choice, Catchment and Service efficiency. The indicators are tested in a case study where the consequences of placing a motorway and a railway in tunnels are assessed. The results show how local accessibility is affected in non-linear patterns. The paper contributes to accessibility literature by introducing direct barrier effects as an applied case of local accessibility, and demonstrates the potential of those indicators to quantify barrier effects. Finally, it offers accessibility as a theoretical framework for further developing theories on barrier effects.
Transport infrastructure such as railways, motorways and arterial roads increases regional access... more Transport infrastructure such as railways, motorways and arterial roads increases regional accessibility for motorised transport but simultaneously can create barriers in local street networks that can decrease accessibility for pedestrians and cyclists. Although several tools for an objective assessment of these barrier effects have been developed, their use in practice is limited; impact assessments are instead based on subjective descriptions. This article reviews the literature on barrier effects of the last 60 years and aims to offer guidance for the use of objective methods of assessment of barrier effects. The first contribution is a conceptual model for the barrier effects of transport infrastructure and their determinants. The second contribution is an overview of tools for the assessment of barrier effects. We conclude that a multi-disciplinary approach is required, supported by the conceptual model and the overview of assessment tools. Investments in transport infrastruct...
Cities can be characterized as distributions of accessibility. Two elements in the urban fabric t... more Cities can be characterized as distributions of accessibility. Two elements in the urban fabric that influence this distribution of accessibility are motorways and railways. These are powerful connectors in urban traffic systems, but can also create strong barriers on a local scale. Based on a literature review, the negative effectsalso called severance-of these barriers on social inclusion, health, and access to workplaces are described. Furthermore, it is pointed out that barrier effects are determined by three elements: transport infrastructure, built environment and people's wishes and needs. Two new morphological indicators are presented with which some of the barrier effects identified in the literature review can be quantified. One indicator is related to proximity to facilities, measured by network distance. The other relates to accessible offer of facilities, measured as the number of facilities within a given metric radius from each residential address. The indicators are tested in a case study in Gothenburg, Sweden, where a four-lane motorway and a railway track form substantial restrictions on the urban development of a former harbour area in the centre of the city. In the case study the consequences of placing the infrastructure in tunnels is assessed. The analyses show how the increases in proximity to facilities and in accessible offer of facilities are distributed in non-linear patterns. These results demonstrate the importance of taking into account transport infrastructure, built environment and people's wishes and needs when assessing barrier effects. The case study indicates the potential of the proposed indicators for inclusion in a method for the quantification of barrier effects.
Transport infrastructure such as railways, motorways and arterial roads increases regional access... more Transport infrastructure such as railways, motorways and arterial roads increases regional accessibility for motorised transport but simultaneously can create barriers in local street networks that can decrease accessibility for pedestrians and cyclists. Although several tools for an objective assessment of these barrier effects have been developed, their use in practice is limited; impact assessments are instead based on subjective descriptions. This article reviews the literature on barrier effects of the last 60 years and aims to offer guidance for the use of objective methods of assessment of barrier effects. The first contribution is a conceptual model for the barrier effects of transport infrastructure and their determinants. The second contribution is an overview of tools for the assessment of barrier effects. We conclude that a multi-disciplinary approach is required, supported by the conceptual model and the overview of assessment tools. Investments in transport infrastruct...
Cities can be characterized as distributions of accessibility. Two elements in the urban fabric t... more Cities can be characterized as distributions of accessibility. Two elements in the urban fabric that influence this distribution of accessibility are motorways and railways. These are powerful connectors in urban traffic systems, but can also create strong barriers on a local scale. Based on a literature review, the negative effectsalso called severance-of these barriers on social inclusion, health, and access to workplaces are described. Furthermore, it is pointed out that barrier effects are determined by three elements: transport infrastructure, built environment and people's wishes and needs. Two new morphological indicators are presented with which some of the barrier effects identified in the literature review can be quantified. One indicator is related to proximity to facilities, measured by network distance. The other relates to accessible offer of facilities, measured as the number of facilities within a given metric radius from each residential address. The indicators are tested in a case study in Gothenburg, Sweden, where a four-lane motorway and a railway track form substantial restrictions on the urban development of a former harbour area in the centre of the city. In the case study the consequences of placing the infrastructure in tunnels is assessed. The analyses show how the increases in proximity to facilities and in accessible offer of facilities are distributed in non-linear patterns. These results demonstrate the importance of taking into account transport infrastructure, built environment and people's wishes and needs when assessing barrier effects. The case study indicates the potential of the proposed indicators for inclusion in a method for the quantification of barrier effects.
Cities can be characterized as distributions of accessibility. Two elements in the urban fabric t... more Cities can be characterized as distributions of accessibility. Two elements in the urban fabric that influence this distribution of accessibility are motorways and railways. These are powerful connectors in urban traffic systems, but can also create strong barriers on a local scale. Based on a literature review, the negative effectsalso called severance-of these barriers on social inclusion, health, and access to workplaces are described. Furthermore, it is pointed out that barrier effects are determined by three elements: transport infrastructure, built environment and people's wishes and needs. Two new morphological indicators are presented with which some of the barrier effects identified in the literature review can be quantified. One indicator is related to proximity to facilities, measured by network distance. The other relates to accessible offer of facilities, measured as the number of facilities within a given metric radius from each residential address. The indicators are tested in a case study in Gothenburg, Sweden, where a four-lane motorway and a railway track form substantial restrictions on the urban development of a former harbour area in the centre of the city. In the case study the consequences of placing the infrastructure in tunnels is assessed. The analyses show how the increases in proximity to facilities and in accessible offer of facilities are distributed in non-linear patterns. These results demonstrate the importance of taking into account transport infrastructure, built environment and people's wishes and needs when assessing barrier effects. The case study indicates the potential of the proposed indicators for inclusion in a method for the quantification of barrier effects.
IOP Conf. Series: Earth and Environmental Science, 2020
Motorways and railways increase regional accessibility but can at the same time reduce local acce... more Motorways and railways increase regional accessibility but can at the same time reduce local accessibility by creating barriers in pedestrian and bicycle networks. This can influence several SDGs, such as SDG 5 (gender equality), 10 (reduced inequalities), and 11 (sustainable cities and communities). This paper presents some first principles of how quantitative indicators of direct barrier effects can be adapted in order to address specific social groups. To demonstrate this, the indicator 'Choice', from a set of four indicators previously developed, was adapted to assess accessibility by children to parks, and waterside and leisure facilities. The indicator was applied to a case in Gothenburg, Sweden, where a GIS-based analysis measured changes in barrier effects brought about by hypothetically placing an existing motorway and railway in tunnels. The results demonstrate how such local accessibility indicators can be adapted to make them relevant for impact assessments of infrastructure projects, and thus enable the measurement of compliance with social sustainability targets in transportation infrastructure planning.
Transport infrastructure can create efficient connections in traffic systems, yet it can also cre... more Transport infrastructure can create efficient connections in traffic systems, yet it can also create barriers to movement on a local scale. In transport infrastructure projects there is a need for methods to quantify these barrier effects-also called severance-to assess their impacts on social inclusion, health and viability of businesses. This paper proposes four local accessibility indicators to measure direct barrier effects: Travel time, Choice, Catchment and Service efficiency. The indicators are tested in a case study where the consequences of placing a motorway and a railway in tunnels are assessed. The results show how local accessibility is affected in non-linear patterns. The paper contributes to accessibility literature by introducing direct barrier effects as an applied case of local accessibility, and demonstrates the potential of those indicators to quantify barrier effects. Finally, it offers accessibility as a theoretical framework for further developing theories on barrier effects.
Cities can be characterized as distributions of accessibility. Two elements in the urban fabric t... more Cities can be characterized as distributions of accessibility. Two elements in the urban fabric that influence this distribution of accessibility are motorways and railways. These are powerful connectors in urban traffic systems but can also create strong barriers on a local scale. Based on a literature review, the negative effects of these barriers-also called severance-on social inclusion, health, and access to workplaces are described. Furthermore, it is pointed out that barrier effects are determined by three elements: transport infrastructure, built environment and people's wishes and needs. Two morphological indicators are presented with which some of the barrier effects identified in the literature review can be quantified. One indicator is related to proximity to facilities, measured by network distance. The other relates to accessible offer of facilities, measured as the number of facilities within a given metric radius from each residential address. The indicators are demonstrated in a case study in Gothenburg, Sweden, where a four-lane motorway and railway tracks form substantial restrictions on the urban development of a former harbor area in the center of the city. In the case study the consequences of placing the infrastructure in tunnels is assessed. The analyses show how the increases in proximity to facilities and in accessible offer of facilities are spatially distributed in non-linear patterns. These results demonstrate the importance of taking into account transport infrastructure, built environment and people's wishes and needs when assessing barrier effects. The case study indicates the potential of the proposed indicators for inclusion in a method for the quantification of barrier effects. Abstract Cities can be characterized as distributions of accessibility. Two elements in the urban fabric that influence this distribution of accessibility are motorways and railways. These are powerful connectors in urban traffic systems but can also create strong barriers on a local scale. Based on a literature review, the negative effects of these barriers-also called severance-on social inclusion, health, and access to workplaces are described. Furthermore, it is pointed out that barrier effects are determined by three elements: transport infrastructure, built environment and people's wishes and needs. Two morphological indicators are presented with which some of the barrier effects identified in the literature review can be quantified. One indicator is related to proximity to facilities, measured by network distance. The other relates to accessible offer of facilities, measured as the number of facilities within a given metric radius from each residential address. The indicators are demonstrated in a case study in Gothenburg, Sweden, where a four-lane motorway and railway tracks form substantial restrictions on the urban development of a former harbor area in the center of the city. In the case study the consequences of placing the infrastructure in tunnels is assessed. The analyses show how the increases in proximity to facilities and in accessible offer of facilities are spatially distributed in non-linear patterns. These results demonstrate the importance of taking into account transport infrastructure, built environment and people's wishes and needs when assessing barrier effects. The case study indicates the potential of the proposed indicators for inclusion in a method for the quantification of barrier effects.
Transportation Research Part D Transport and Environment, 2020
Transport infrastructure can create efficient connections in traffic systems, yet it can also cre... more Transport infrastructure can create efficient connections in traffic systems, yet it can also create barriers to movement on a local scale. In transport infrastructure projects there is a need for methods to quantify these barrier effects – also called severance – to assess their impacts on social inclusion, health and viability of businesses. This paper proposes four local accessibility indicators to measure direct barrier effects: Travel time, Choice, Catchment and Service efficiency. The indicators are tested in a case study where the consequences of placing a motorway and a railway in tunnels are assessed. The results show how local accessibility is affected in non-linear patterns. The paper contributes to accessibility literature by introducing direct barrier effects as an applied case of local accessibility, and demonstrates the potential of those indicators to quantify barrier effects. Finally, it offers accessibility as a theoretical framework for further developing theories on barrier effects.
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Journal Articles (peer-reviewed) by Job van Eldijk