Browsing by Author "Maritz, Johan"

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    Adapting asphalt pavements to climate change challenges
    (CAPSA, 2019-10) Mokoena, Refiloe; Mturi, Georges AJ; Maritz, Johan; Malherbe, Johan; O'Connell, Johannes S
    Performance grade specifications for bituminous binders focus on the evaluation of bitumen properties based on the loading and environmental conditions under which the material will be subjected to in the field. The temperature of the asphalt layer (as determined by the climate and geographical location), in conjunction with the grade and age of the bitumen, plays a pivotal role in determining the stiffness or dynamic modulus of the asphalt layer. Most climate models predict an increasing rate in the rise of average air temperatures in the near future. As the average air temperatures increase, it is expected that the frequency and duration of extreme temperatures will also rise. This will have a direct impact on asphalt pavement performance by increasing the potential for permanent deformation of pavements and the rate of age hardening of asphalt binders. In this study, interpolated maps of minimum and maximum pavement temperatures were generated using a climate model for predicted air temperatures for two 20-year periods, up to the years 2040 and 2060. The same model was used to generate two historic 20-year periods, going back to 2000 and 1980. The Viljoen temperature prediction algorithms were used for calculating the pavement temperatures as opposed to the Superpave models. The maps produced in this paper can eventually be used to identify adaptation measures which may include modifying current design and maintenance practices.
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    Advances in geospatial analysis platforms and tools: Creating space for differentiated policy and investment responses
    (CSIR, 2010-09) Maritz, Johan; Le Roux, Alize; Van Huyssteen, Elsona; Coetzee, M; Mans, Gerbrand G; Goss, H
    Over the last 5 years a set of incremental advances within geospatial analysis platforms and tools developed by the CSIR's Planning Support Systems in collaboration with key stakeholders such as The Presidency, enabled a more nuanced regional level spatial analysis, well as the identification and comparison of a range of settlement types in South Africa in terms of key characteristics and functional roles. Amongst others the analysis have enabled the identification of critical areas that can be targeted in planning and policy development, and a new "reading" of the South African space economy. The latter for example highlighting the importance of the policy centric network of densely settled clusters, local towns and service centres, regional service centres, cities and bigger city-region areas, and challenging traditional perceptions regarding the role, character and challenges of particular spaces, for example that of "urban" versus "rural". The paper is aimed at reflecting on a series of recent advances in spatial analysis and how these contributed towards an enhanced understanding of complex dynamics of social and economic spatial patterns within South Africa, informing key policy and planning process in support of development objectives. The paper will firstly provide a brief overview of these recent advances and innovations in spatial analysis tools and platforms by the CSIR, and position that in context with international challenges to improve spatial analysis and decision support systems. Secondly, the paper will illustrate the recent applications and the value of these advances within the South African context, not only in generating a more nuanced understanding of the space economy, but also in enabling commensurate and context specific investment and policy responses and in contributing to development, urban management and service delivery discourses.
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    African case studies: Developing pavement temperature maps for performance-graded asphalt bitumen selection
    (2022-01) Mokoena, Refiloe; Mturi, George AJ; Maritz, Johan; Mateyisi, Mohau; Klein, Pieter
    The reliable performance of roads is crucial for service delivery, and it is a catalyst for domestic and cross-border spatial development. Paved national roads are expected to carry higher traffic volumes over time as a result of urbanization and to support the economic development in the continent. Increased traffic levels combined with expected increases in air temperatures as a result of global warming highlight the need to appropriately select bituminous road materials for a reliable performance of asphalt roads. The objective of the paper is to present African case studies on the development of temperature maps necessary for performance-graded bitumen selection for road design and construction. A consistent approach, that caters for the variability of geographical, environmental and climatic conditions, does not currently exist within the continent. Therefore, this paper discusses a series of critical components in the development of temperature maps for performance-graded bitumen including (i) pavement temperature models and climatic zones in Africa; (ii) the effect of urban heat islands on pavement temperature; (iii) sources of weather data and (iv) the mapping procedure to produce temperature maps. Characterizing the thermal properties of the pavement was found to be an important factor for reliably calculating expected road temperatures as well as the consideration of the ambient climate for a given location. During this study, the urban heat island effect was found to have little influence on the maximum pavement temperatures but a significant effect on the minimum pavement temperatures. Some areas of the urban district assessed in this investigation were found to increase by two performance grades according to the minimum temperature criteria. The recent observed weather data from weather stations are the most accurate means of measurement of the ambient environmental conditions necessary for performance-based specifications, but they are not always easily accessible, and therefore other sources of data, such as satellite data, may need to be used instead. With the expected temperature increases expected as a result of climate change, the use of Global Climate Models also opens new avenues for performance-based material selection in the African continent for expected climates as an alternative to traditional approaches based on historically observed weather.
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    Are we achieving spatial transformation In South Africa? Can sub-city spatial indicators make a contribution?
    (stepsa.org, 2016-06) Maritz, Johan; Van Huyssteen, Elsona; Le Roux, Alize; Pieterse, Amy; Ndaba, Dumisani; Mans, Gerbrand G; Ngidi, Mawande
    With the advent of a democratic order in South Africa in 1994 a number of policy frameworks have seen the light. All of these have indicated the need to spatially transform cities and settlements – to break from the pre-1994 apartheid city. Over time these frameworks change, new ones are developed which often state the same objectives. A major focus has also been placed on tracking their impact through spatial outcomes as set out in the Spatial Planning and Land Use Managemnet Act (SPLUMA), Act 16 of 2013 (Republic of South Africa, 2013) and also internationally through the recently introduced UN Sustainable Development Goals (SDGs) (United Nations Sustainable Development, 2016). A key question that remains is whether cities are succeeding in reinventing and restructuring the past. Vital in exploring progress regarding spatial transformation is investigating how the landscape within cities has changed spatially. To assess the progress made by South African cities in the last 20 years, the CSIR has embarked on developing a number of standardised repeatable sub-city level spatial indicators and/or indices to illustrate specific components of spatial change or transformation. This paper provides an overview of some of the innovations in spatially and temporally aligned sub-city indicator development within a data-scarce context. It also reflects on lessons learned, in the process providing some examples of spatial transformation analyses for a number of cities using the indicators developed. These Indicators have been developed partly in collaboration with the South African Cities Network (SACN) to support the 2016 State of Cities Report’s (SACN, 2016) theme on spatial transformation.
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    Assessing economic vulnerability in South African municipalities: A focus on mining-dependent regions using the Economic Complexity Index
    (2023-12) Rossouw, R; Maritz, Johan
    South Africa’s historical reliance on mineral resources has established thriving towns and settlements, sustaining households for decades. However, the decline in demand for these resources and mine closures pose significant threats to the future of these areas, creating vulnerabilities in towns and their dependent regions. This article addresses concerns about the vulnerability of certain South African municipalities, particularly those heavily dependent on mining. Employing an Economic Complexity Index (ECI), the study identifies and classifies vulnerable mining towns and regions. The methodology involves applying the concept of economic vulnerability, utilising sub-national economic and trade data to determine the complexity of municipal economies. In addition, geospatially linked data is employed to identify mining dependent areas at risk. The results highlight municipalities with low economic complexity, signalling the need for targeted interventions and emphasising the importance of economic diversification in mitigating risks. The study not only serves as a warning for current planning, but also lays the groundwork for future research and evidence-based policymaking to ensure the sustainability and resilience of regional economies in South Africa.
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    Climate change adaptation in the African roads sector: Constraints, opportunities and policy challenges
    (2019-10) Maritz, Johan; Arnold, Kathryn A; Roux, Michael P; Le Roux, Alize; Verhaeghe, Benoit MJA
    Roads play a vital role in strengthening the socio-economic development of regions in sub-Saharan Africa by providing local communities with critical connections between essential market points, service towns and infrastructure. To enhance the capacity of roads authorities to reduce the current and future impacts of climate change on rural roads, a project was initiated by the Africa Community Access Partnership (AfCAP), a research programme funded by UK Aid, to focus on climate adaptation in this sector. A methodology for carrying out climate adaptation assessments for rural roads was developed and packaged into a handbook and series of linked guideline documents. The project further looked at addressing capacity enhancement in the AfCAP partner countries to ensure a strong focus on embedment and uptake. The study focused predominantly on three AfCAP countries, namely Mozambique, Ethiopia and Ghana. In order to embed climate change adaptation into the respective national transport authorities, several constraints had to be addressed.
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    Climate change adaptation in the African roads sector: Constraints, opportunities and policy challenges [poster]
    (2019-10) Maritz, Johan; Arnold, Kathryn A; Roux, Michael P; Le Roux, Alize; Verhaeghe, Benoit MJA
    Roads play a vital role in strengthening the socio-economic development of regions in Sub-Saharan Africa by providing local communities with critical connections between essential market points, service towns and infrastructure. The United Nations Environmental Programme describes the African continent as a ‘vulnerability hotspot’ for climate change. During the past four decades, African countries have experienced more than 1,500 recorded weather-related disasters. These disasters impact on affected countries’ economies and, in particular, on rural communities and their livelihoods. Changes to the region’s climate are causing widespread damage to road infrastructure and its associated assets. Rural accessibility is being compromised by climate variability in a number of countries for significant periods of the year, adversely affecting livelihoods and associated socio-economic development, both directly and indirectly. Although climate commitments have been undertaken by many countries in the region, policy has not always been translated into action in all sectors and the transport sector (especially rural roads) has not featured strongly when countries consider climate change actions. To enhance the capacity of roads authorities to reduce the current and future impacts of climate change on rural roads, a project was initiated by the Africa Community Access Partnership (AfCAP), a research programme funded by UK Aid, to focus on climate adaptation in this sector. Through research and knowledge sharing, the objective was to compile pragmatic, cost beneficial engineering and non-engineering procedures and guidance that could be used to direct roads sector institutions to address climate threats. A methodology for carrying out climate adaptation assessments for rural roads was developed and packaged into a handbook and series of linked guideline documents. The project further looked at addressing capacity enhancement in the AfCAP partner countries to ensure a strong focus on embedment and uptake. The study focused predominantly on three AfCAP countries, namely Mozambique, Ethiopia and Ghana. In order to embed climate change adaptation into the respective national transport authorities, several constraints had to be addressed. Two prominent issues emerged, with the first being the lack of in-country collaboration between sectors when dealing with climate change science, and the second being gaps in policies that address climate change in the transport sector. These constraints have affected the capacity of the national transport authorities in the various countries to incorporate climate change risk and vulnerability into their planning systems. The project therefore provided an opportunity to address these challenges and to enable the practical implementation of climate change adaptation in the roads sector.
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    Developing spatial indicators using a uniform tessellation to measure urban transformation
    (Springer, 2017-07) Maritz, Johan; Le Roux, Alize; Mans, Gerbrand G
    South Africa’s largest cities are subjected to high rates of urbanization with a projected 8 million people migrating to these urban spaces by 2030 [ 1]. Managing and guiding this growth is made more difficult due to the countries ‘apartheid city’ past - a segregated city form inherited from the pre-democratic order in 1994 where towns and cities were spatially engineered along racial divides. With the advent of a democratic order in South Africa in 1994 a number of policy frameworks have seen the light all of which have indicated the need to spatially transform cities and settlements – to break from the pre-1994 apartheid city. Measuring the progress made in spatial and socio-economic transformation has proven difficult as some information have only been provided at city or Local Municipal scale. To measure spatial outcomes, city performance, quality of life etc. a series of local and international city scale indicators has been developed. These however are only useful when comparing cities; it does not convey sub-city scale change or transformation. This paper profiles an approach that uses a single-sized uniform tessellation to create demographic and economic indicators for nine cities and explores the utilisation of this tessellated framework to analyse and depict demographic and economic change over time.
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    Development of a logistics brokering system for South Africa's displaced rural residents
    (Proceedings - International Conference on r-ICT 2009, 2009-06) Maritz, Johan
    A key challenge in rural environments is to overcome constraints such as high transport cost, irregular or unpredictable transport services, transport of low passenger and freight volumes, low logistics service demand and supply, limited local skills vailability and isolation from or limitations to accessing the information society or knowledge networks. The use of ICT and relevant service systems holds the potential to overcome such constraints, and could improve the general accessibility of rural households and enterprises (e.g. to services, peers and markets). During 2008/9 the Council for Scientific and Industrial Research's (CSIR) Built Environment unit initiated a research project to develop and test a logistics brokering system that could overcome rural transport challenges facing local residents. The system, using a session oriented service known as Unstructured Supplementary Services Data (USSD), provided a mechanism to capture demand for transport which could then be organised and be matched with the supply of transport (the local transport providers). The project utilised a living labs approach to overcome sustainability challenges normally associated with systems in rural areas. A service system framework was applied to develop the system: It distinguishes that different aspects need attention in the design of a new (service) system which includes a service concept, an organizational network and a technical architecture. The paper expands on both the living lab approach; the service system framework used to develop the logistics brokering demonstrator, and lists factors that affected the outcome of the system development
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    Development, use and potential contribution of appropriate ICT-based service systems to address rural transport related accessibility constraints - Emerging lessons from case studies in South Africa
    (Document Transformation Technologies, 2010-08) Maritz, Johan; Maponya, G
    Rural environments suffer a number of constraints including high transport cost, irregular or unpredictable transport services, transport of low passenger and freight volumes, and low logistics service demand and supply. Rural residents, especially those residing in South Africa’s ex-homeland territories are spatially removed from employment and service centres and as a result experience the abovementioned constraints. To address specific rural transport and logistical problems, researchers at the CSIR’s Built Environment Unit have turned to a service system approach where ICT systems are developed to target and address a specific transport related problems. The use of such systems holds the potential to overcome such constraints, and could improve the general accessibility of rural households and enterprises (e.g. to services, peers and markets). During 2008-10 the Council for Scientific and Industrial Research’s (CSIR) Built Environment unit initiated a two (related) research projects: one focused on the development of a logistics brokering system that could address rural transport challenges facing local residents. The second, a healthcare application, dealt with supporting local home-based care workers that provide care for patients at home, whilst supplying vital health care statistics to health care professionals at the local clinic/hospital thus avoiding the need to travel frequently. Both these systems use a session-oriented service technology known as Unstructured Supplementary Services Data (USSD), to deliver the services between users, service brokers or facilitators and the end users. A service system framework was applied within a living labs context which positively affected the outcomes of the projects. These systems, and others like it, hold much potential to address transport related rural accessibility challenges.
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    Embedment of climatic effects in the road asset management process
    (PIARC, 2019-10) Roux, Michael P; Verhaeghe, Benoit MJA; Maritz, Johan; Arnold, Kathryn A; Le Roux, Alize
    The United Nations Environmental Programme describes the African continent as a ‘vulnerability hotspot’ for climate change. During the past four decades African countries have experienced more than 1 500 recorded weather-related disasters. Changes to the region’s climate are causing widespread damage to road infrastructure and its associated assets. In order to help address this significant threat to Africa’s development, the Africa Community Access Partnership (AfCAP), a research programme funded by UKAid, has commissioned a project, starting in April 2016, to produce regional guidance on the development of climate-resilient rural access in Africa through research and knowledge sharing within and between participating countries. The output will assist to develop a climate-resilient road network that reaches fully into and between rural communities. As part of this study, a Climate Threat and Vulnerability Assessment Methodology has been developed that can be applied at a national level to facilitate the identification of regions/districts where the road infrastructure is most vulnerable to a changing climate in terms of the impact on rural accessibility. A second methodology for the assessment of climate risk and vulnerability of rural access roads at a local level has also been developed. Both the district level and local level assessments make use of climate threat data, road network data and socio-economic data. The outcomes from these assessments are a number of indices, both separate and combined, that can be used to rank roads and structures in terms of priority for maintenance or adaptation. Once roads and structures have been ranked in terms of priority for maintenance or adaptation and maintenance and adaptation activities can then be planned, designed and implemented to lead to a rural road network that is more resilient to the impacts of climate change. The district level assessment combines climate threat data and road network data (mainly road condition data) to determine road exposure to identified threats and from determine a road asset vulnerability index. The socio-economic data and road network data are combined to determine a road criticality index. A remoteness indicator expands on a standard RAI by measuring the level of access that a person living within an area (e.g. district) has to a range of services and other functions that are associated with an urban setting. A consolidated view of asset criticality per district is then formed by aggregating the road exposure and vulnerability index and the rural access index. The outcome of the local climate vulnerability assessment is a multi-dimensional vulnerability index. The vulnerability index integrates three composite indicators, namely an indicator of road condition deficiency to the impacts of climate, an indicator of maintenance efficacy, and an indicator of the criticality of the road. The deficiency index and the maintenance index is calculated using data that are gathered by way of a climate impact field assessment during which the road is assessed in 100 m segments. The criticality index is a combination of socio-economic aspects, namely the number of alternative routes available; predominant vehicle types on the road; public facilities reachable by the road; and the dominant topography surrounding the road. The assessment methods presented here should be embedded in road asset management systems, as these are the most appropriate vehicle to store the input data, perform the analysis and apply the outputs in the broader road asset management environment.
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    Emerging potential for radical e-enabled improvements in rural collaboration and accessibility
    (2007-05) Naude, AH; Maritz, Johan
    The focus of this paper is the emerging potential for radical e-enabled changes involving two key rural development drivers, namely: Enhanced collaboration - addressing problems such as small enterprise sizes low rural demand and supply chain volumes, as well as problems associated with limited local human capacities and uncoordinated or misdirected rural development planning; and enhanced accessibility - addressing the typical problems of rural isolation such as inadequated or costly digital and physical access to information, services, peers and markets. The main aim is to present a customised logical framework (CHICA[S]) - developed as a means to assess and prepare plans and value propositions or for realising this potential
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    Geospatial accessibility analysis of primary health care clinics in the Mbizana local municipality in the Eastern Cape
    (2018-09) Ragoasha, Matsubu V; Maritz, Johan; Cooper, Antony K
    A key challenge in rural South Africa is providing social facilities such as clinics. This is difficult due to the nature of settlement distributions, especially in traditional authority areas. Geospatial accessibility analysis can help find suitable locations for facilities to serve the inhabitants. Settlements in South Africa’s traditional authority areas often do not meet the minimum thresholds required for specific social facilities, therefore determining the best location can be daunting. This study applied a geospatial accessibility approach to primary health care clinics in the Mbizana Local Municipality in the Eastern Cape Province. The results of this accessibility analysis identified suitable locations to build the eight clinics that were proposed in the municipality's Integrated Development Plan for 2015-2016. We calculated facility catchments using approximate road-based travel distances to the nearest facility within the municipality. Two types of catchment area analysis were performed: one included distance and capacity constraints and the other excluded them. The unconstrained analysis showed that only 36% of the population is situated within the service reach of 5km. This decreased to 33% when distance and capacity constraints were considered. The remaining demand of 67% is significant, indicating high unsatisfied demand for additional clinics. Although the proposed eight clinics increased the overall accessibility to primary health care clinics, a large proportion of the population remains unserved, suggesting that more than eight clinics would be needed. The results of this analysis therefore also aim to support health care facility planning and distribution within the Mbizana Local Municipality.
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    Geospatial analysis platform: Supporting strategic spatial analysis and planning
    (2008-11) Naude, A; Van Huyssteen, Elsona; Maritz, Johan; Badenhorst, W
    Whilst there have been rapid advances in satellite imagery and related fine resolution mapping and web-based interfaces (e.g. Google Earth), the development of capabilities for strategic spatial analysis and planning support has lagged behind, and where such capabilities have been developed there seems to be very little evidence of actual use thereof by practitioners (Klosterman, 2005). In this paper we argue that to support strategic spatial analysis and planning and to develop the necessary strategic understanding of spatial variations, patterns and relationships, on the one hand, requires much more than moving from fine resolution mapping to the use of large area statistics and associated maps. Besides having to address the problem of spatially incompatible statistical area boundaries (e.g. administrative boundaries differing from river catchment management boundaries), it is argued that there is also a need to move from the prevailing “container“ approach to a much more relational approach to spatial analysis. This means that instead of only measuring and mapping what is in each territorial container (e.g. a local municipality) attention should also be given to measuring and mapping the relative positions, cross-border influences and other inter-locational attributes that places have in relation to surrounding areas, corridors and the regional or country-wide distribution of key nodes such as towns, harbours, etc. On the other hand we argue that supporting strategic spatial analysis and planning through innovations in technology also requires the development of a relevant and user friendly planning support system (see Klosterman, 2005 and Geertman and Stillwell, 2004) that enables a wide range of users easy access and usage of such technology. The arguments and reflections in the paper are based on recent experiences with the development and application of the Geospatial Analysis Platform (GAP) by CSIR Built Environment (CSIR 2007a), in collaboration with a range of collaborators and stakeholders
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    Integration of IAM and GIS technologies to support decision making in the planning and procurement of physical infrastructure for the treatment of drug-resistant tuberculosis in South Africa
    (International Federation of Hospital Engineering, 2008-10) Abbott, GR; Parsons, SA; Maritz, Johan; Badenhorst, W; De Jager, Peta
    While positive progress was being made in the latter half of last century in the treatment of the Mycobacterium tuberculosis (TB) epidemic across the world, the emergence of new drug resistant forms – multi drug-resistant TB (MDR-TB) and extensively drug-resistant TB (XDR-TB) threatens gains made and has raised the spectre of a resurgent and more virulent TB epidemic. Co-infection with HIV/Aids, a common phenomenon in South Africa, adds substantially to the risk of infection and numbers of patients, making control more complex and demanding. With both a high TB burden and incidence, South Africa is one of the most negatively impacted countries in the world. The real additional burden of hospitalising M(X)DR-TB patients, the urgency of the need for such accommodation, disease specific requirements for long-term acute and post-acute M(X)DR-TB care, the need to plan within an existing service strategy and limitations on available resources (budget, staff and infrastructure), requires that a new, more integrated approach to strategic planning and the provision of accommodation be developed. This paper provides an overview of new processes and a toolkit being developed in South Africa to support decision making in the planning, procurement, management and operation of physical infrastructure for the treatment of patients with M(X)DR-TB. Use is made of a new Immovable Asset Management (IAM) framework and tools being developed as well as of GIS technologies. Links are also made to facility and risk assessment tools developed for facilities benchmarking and post-occupancy evaluation. While the toolkit is being specifically developed to address the M(X)DR-TB epidemic in South Africa it is envisaged that it will have a wider application in health infrastructure planning and management. Where this paper focuses on integrated service and facility planning for M(X)DR-TB patients, the Congress paper “Hospital design to accommodate Multi- and Extensively Drug-Resistant TB patients” will focus on the design of such facilities
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    Planning for a post-mining future in the Rustenburg region and the transition towards it?
    (Nova Science Publishers, Inc, 2021-06) Maritz, Johan; Oranje, Mark; Van Huyssteen, Elsona; Nel, Verna; Marais, Lochner; Campbell, Malene
    Over the past 150 years, mining has been one of the most influential shapers of economic activities, social relations, spatial development patterns, power tussles and structures, political questions and debates, institutional structures, and legal and policy frameworks in South Africa. Even though the sector's influence has waned significantly over the last three to four decades, and personal, community and financial services, as well as retail activities, have become more prominent economic players, it is still a major contributor to the national economy and fiscus (Minerals Council South Africa (MCSA) 2019; South Africa, Department of Rural Development and Land Reform 2019).
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    A regional model for equitable social service delivery: Settlement prioritisation and supporting infrastructure to foster rural well-being
    (2019-07) Green, Chéri A; Maritz, Johan; Van Huyssteen, Elsona; Oranje, M; Sogoni, Z
    Enabling equitable social service delivery and promoting sustainable rural development remain key challenges within South African rural areas. Fiscal constraints, the high cost of social service provision and growing rural settlements increasingly require social investment and associated enabling infrastructure to deliver services to rural residents and improve their well-being. The need and value of developing consolidated rural service towns that are well provided with social services, to act as anchors and focus for rural and regional development, is one of the key levers proposed to support spatial transformation in the Draft National Spatial Development Framework (NSDF 2019). To successfully implement such a regional development approach in a low economic growth context, however, requires that the rural-regional development approach is underpinned by a targeted network of social service nodes together with the necessary enabling infrastructure. Successful implementation will require a high level of cross-sectoral and interregional planning to cluster spatially-aligned investment. The use of service centre approaches and associated inter-sectoral alignment is however not novel within international or national planning experiences. The purpose of the paper is twofold. Firstly to illustrate the potential value in using well-selected towns and urban areas within regions to act as such engines of regional and national transformation, despite past experiences and misgivings relating to the use of service centre approaches. Secondly to highlight the importance of the identification of national and regional settlement and service networks to guide and spatially align investment (including transportation projects) across sectors, regions and municipal boundaries. Learning from earlier applications of the regional service concept it is evident that careful selection of places and spatial alignment is key to the success of the rural service centre model, as is applied in the NSDF, 2019. The authors outline how this can be achieved through (i) spatial specific prioritisation to enable alignment between spheres and sectors as made possible by recent research such as used in the Social Facility Provision Toolkit (DRDLR), in which they have been involved; and (ii) the importance of providing good physical links and accessible connections between rural and urban areas, as well as between a range of rural places, through a well-maintained transport infrastructure network and public transport services.
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    SADC’s settlement hierarchy and networks in support of cross-border regional development
    (Routledge, 2024-03) Maritz, Johan; Le Roux, Alize; Van Huyssteen, Elsona
    This chapter emphasises the merit of creating a SADC regional settlement profile. It unfolds in three segments: review of regional settlement development trends; spotlight on urban significance and the imperative of a shared settlement profile, with South African typologies as a case study; and an analytical outline leveraging collective datasets to dissect SADC's evolving settlement terrain.
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    Seeking to improve spatial justice - the case of rationalising the district court areas in South Africa - utilising several spatial analysis methods.
    (International Cartographic Conference (ICC), 2015-08) Maritz, Johan; Moagi, M
    It is the right of every South African to have just or fair access to justice. Due to South Africa’s past spatial development history the location of people versus where facilities are, is not always in balance. This paper describes work conducted for the Department of Justice and Constitutional Development during 2014 to assist the process to rationalise magisterial districts. In order to determine access to courts, some form of impact assessment is required – this paper outlines the accessibility analysis conducted in respect of the Gauteng and North West provinces (which served also as the first two provinces to be ad-dressed). The analysis is for the most part a spatial- or geographic analysis pro-cess to map levels of access that can then be compared with proposed new magisterial district boundaries. The findings of this analysis provides overall results of accessibility as well as makes specific recommendations based on the results when compared to the proposed new magisterial districts.
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    Spatial Change as Drivers of Risk and Vulnerability in South Africa: Spatial trends in the 3 metropolitan cities of Gauteng
    (stepsa.org, 2016-07) Pieterse, Amy; Van Niekerk, Cornelia W; Le Roux, Alize; Van Huyssteen, Elsona; Mans, Gerbrand G; Maritz, Johan
    Urban spatial change trends manifest most noticeably in Gauteng. This not only confirms perceptions about metros as increasingly being the spaces where the future of South Africa's youth will be determined, but also once again rings the alarm bells for urgent, focused and innovative government support to address urban risks and service delivery implications.